JP2004310785A - Electronics - Google Patents

Abstract

The present invention relates to an electronic device on which a CPU board is mounted, in which the heat generation temperature of the CPU chip is promptly and accurately reflected in the temperature control of the chip, and the performance of the CPU chip is fully utilized so that the CPU chip can be used. High-speed operation is possible near the limit frequency.
A circuit for supplying a clock to a CPU chip, a temperature sensor directly attached to the CPU chip, and a circuit for controlling the frequency of the clock based on a detection signal of the temperature sensor. And the frequency of the clock supplied to the CPU chip 11 is directly controlled based on the detection signal of the temperature sensor 12 directly attached to the CPU chip 11.
[Selection diagram] Fig. 1

Description

  The present invention relates to an electronic device having a built-in CPU board, and more particularly to an electronic device characterized by a cooling control mechanism for a CPU chip or other heat-generating components mounted on the CPU board.

  In an electronic device such as a portable computer on which a CPU board is mounted, the processing performance (processing speed) is determined by the clock frequency of the CPU. That is, the processing performance increases as the clock frequency is increased within the specified limit clock frequency range of the CPU chip. However, when the processing speed is increased, the power consumption increases according to the clock frequency, and accordingly, the amount of heat generated by the CPU chip also increases.

  Therefore, in a portable computer equipped with a CPU board, for example, in a portable computer, a chip cooling means for removing heat generated in the CPU chip and suppressing a rise in the temperature of the CPU chip in order to sufficiently exhibit the performance of the CPU. Have been proposed and realized.

  As a countermeasure for suppressing the rise in temperature of the CPU chip, conventionally, means for detecting the ambient temperature around the CPU chip and controlling the clock frequency based on the detected output has been adopted. That is, when the ambient temperature around the CPU chip reaches the set temperature, the CPU clock frequency is reduced. Alternatively, the CPU clock frequency is controlled so as to be inversely proportional to the ambient temperature around the CPU chip.

  However, this type of conventional temperature control means has a configuration in which heat generated in a heat generating portion of a CPU chip propagates through the surrounding air, and the temperature sensor detects the diffused ambient temperature to control the clock. Therefore, a relatively large time delay occurs before the heat generation of the CPU chip is reflected on the frequency control of the CPU clock, and the accurate temperature of the heat generating portion cannot be detected, so that fine and accurate temperature control cannot be performed. In addition, the CPU chip cannot be operated in the vicinity of the limit frequency because the margin of the operation limit temperature (margin) must be large. Therefore, conventionally, there has been a problem that the performance of the CPU chip cannot be sufficiently exhibited, and high-speed processing by the CPU clock near the limit frequency cannot be realized.

  Also, when the temperature of the CPU chip reaches a high temperature at which normal operation cannot be maintained, if the system operation is not stopped at that time, not only will data corruption during processing occur, but also hardware and software abnormalities will occur, resulting in failure. May be difficult to recover.

  Also, when a portable computer is mounted on a function expansion unit that expands its functions, the heat radiation port of the portable computer is blocked by the function expansion unit and indirectly receives the heat generated by the function expansion unit. When used, depending on the surrounding environment, the temperature inside the housing of the portable computer abnormally rises, which may lead to data destruction during processing, hardware abnormality, and the like.

  As described above, in the conventional CPU temperature control means, since a relatively large time difference occurs before the heat generation temperature of the CPU chip is reflected in the CPU clock control, highly accurate temperature detection cannot be performed. For this reason, there has been a problem that the temperature of the CPU chip cannot be finely controlled and the CPU chip cannot operate stably at a high speed near the limit frequency where the performance of the CPU chip is fully utilized.

  Also, when the temperature of the CPU chip reaches a high temperature at which normal operation cannot be maintained, if the system operation is not stopped at that time, not only will data corruption during processing occur, but also hardware and software abnormalities will occur, resulting in failure. However, there is a risk that recovery may be difficult. Also, when a portable computer is mounted on a function expansion unit that expands its functions, the heat radiation port of the portable computer is blocked by the function expansion unit and indirectly receives the heat generated by the function expansion unit. When used, depending on the surrounding environment, the temperature inside the housing of the portable computer abnormally rises, which may lead to data destruction during processing, hardware abnormality, and the like.

  The present invention has been made in view of the above circumstances, and in an electronic device on which a CPU board is mounted, the heat generation temperature of the CPU chip is promptly and accurately reflected in the temperature control of the chip, and the performance of the CPU chip is fully utilized. It is another object of the present invention to provide an electronic device in which a CPU chip can operate at a high speed near a limit frequency.

  The present invention relates to a circuit for supplying a clock to a CPU chip in an electronic device having a built-in CPU board, a temperature sensor directly attached to the CPU chip, and a frequency of the clock based on a detection signal of the temperature sensor. And a circuit for controlling

  With such a configuration, the frequency of the clock supplied to the CPU chip is controlled based on the detection signal of the temperature sensor directly attached to the CPU chip, so that the heat generation temperature of the CPU chip is directly controlled by the clock frequency control. This can be reflected in the temperature control of the chip, and the CPU chip can operate at a high speed near the limit frequency by making full use of the performance of the CPU chip.

  Also, the present invention provides a circuit for supplying a clock to a CPU chip, a temperature sensor provided in a CPU chip mounting portion of the CPU board, and a detection signal of the temperature sensor in an electronic device having a built-in CPU board. And a circuit for controlling the frequency of the clock.

  With such a configuration, the frequency of the clock supplied to the CPU chip is controlled based on the detection signal of the temperature sensor provided in the CPU chip mounting portion of the CPU board. This can be reflected in the temperature control of the chip, and the CPU chip can operate at a high speed near the limit frequency by making full use of the performance of the CPU chip.

  Also, the present invention provides a circuit for supplying a clock to a CPU chip, a fin for removing heat from the CPU chip, a temperature sensor provided on the fin, and a temperature sensor provided on the fin. A circuit for controlling the frequency of the clock based on the detection signal.

  With such a configuration, the frequency of the clock supplied to the CPU chip is controlled based on the detection signal of the temperature sensor provided on the fin of the CPU chip. This can be reflected in the control, and the CPU chip can operate at high speed near the limit frequency by fully utilizing the performance of the CPU chip.

  Further, the present invention provides a circuit for supplying a clock to a CPU chip, a heat conductor for transmitting heat of the CPU chip, and a temperature of the CPU chip via the heat conductor in an electronic device having a built-in CPU board. And a circuit for controlling the frequency of the clock based on the detection signal of the temperature sensor.

  With such a configuration, the frequency of the clock supplied to the CPU chip is controlled based on the detection signal of the temperature sensor provided on the heat conductor that transmits the heat of the CPU chip. Can be immediately reflected in the temperature control of the chip, and the performance of the CPU chip can be fully utilized to operate the CPU chip at a high speed near the limit frequency.

  According to the present invention, in an electronic device having a built-in CPU board, a fan for cooling a CPU chip, a temperature sensor directly attached to the CPU chip, and driving of the fan based on a detection signal of the temperature sensor. And a controlling circuit.

  With this configuration, the fan that cools the CPU chip is driven and controlled based on the detection signal of the temperature sensor directly attached to the CPU chip, so that the heat generation temperature of the CPU chip is directly reflected in the temperature control of the chip. The CPU chip can operate at a high speed near the limit frequency by fully utilizing the performance of the CPU chip.

  Further, the present invention provides a fan for air cooling a CPU chip, a temperature sensor provided in a CPU chip mounting portion of the CPU board, and a detection signal of the temperature sensor in an electronic device having a built-in CPU board. And a circuit for controlling the driving of the fan.

  With such a configuration, the fan for cooling the CPU chip is driven and controlled based on the detection signal of the temperature sensor provided on the CPU chip mounting portion of the CPU board. This can be reflected in the temperature control, and the CPU chip can operate at high speed near the limit frequency by making full use of the performance of the CPU chip.

  The present invention also provides a fin for removing heat from a CPU chip, a temperature sensor provided on the fin, a fan for cooling the CPU chip via the fin, A circuit for controlling the driving of the fan based on a detection signal of the temperature sensor.

  With this configuration, the fan that cools the CPU chip is driven and controlled based on the detection signal of the temperature sensor provided on the fin of the CPU chip. Thus, the CPU chip can be operated at a high speed near the limit frequency by making full use of the performance of the CPU chip.

  In addition, the present invention relates to a heat conductor for transmitting heat of a CPU chip, a temperature sensor for detecting a temperature of the CPU chip via the heat conductor, and It is characterized by comprising a fan for cooling a CPU chip through a body, and a circuit for controlling the drive of the fan based on a detection signal of the temperature sensor.

  With this configuration, the fan that cools the CPU chip is driven and controlled based on the detection signal of the temperature sensor provided on the heat conductor of the CPU chip. This can be reflected in the control, and the CPU chip can operate at high speed near the limit frequency by fully utilizing the performance of the CPU chip.

  According to the present invention, a portable computer having a suspend / resume function includes a temperature sensor for detecting a temperature of a CPU chip, and control means for executing a suspend process based on a detection signal of the temperature sensor. It is characterized by becoming.

  With such a configuration, when the temperature of the CPU chip reaches a high temperature at which normal operation cannot be maintained, that is, when the temperature sensor detects the operation limit temperature of the CPU chip, normal operation can be maintained by executing the suspend process. When the state is reached, the processing can be resumed to the processing state at the time of interruption and the processing can be continued, so that highly reliable operation can be maintained.

  According to the present invention, there is provided a function expansion unit for expanding the function of a portable computer, a sensor for detecting a temperature of a built-in chip of the portable computer mounted on the unit, and a fan for blowing cooling air to the mounted portable computer. And an air outlet, and control means for controlling the driving of the fan based on the detection signal of the temperature sensor.

  With such a configuration, the cooling operation of the portable computer can cover a reduction in heat radiation of the portable computer when the portable computer is mounted on the function expansion unit, and can maintain a highly reliable function expansion operation.

  As described above in detail, according to the present invention, in an electronic device incorporating a CPU board, a circuit for supplying a clock to a CPU chip, a temperature sensor directly attached to the CPU chip, and a detection signal of the temperature sensor And a circuit for controlling the frequency of the clock based on the clock signal supplied to the CPU chip based on the detection signal of the temperature sensor directly attached to the CPU chip. In addition, the heat generation temperature of the CPU chip can be directly reflected in the temperature control of the chip by the clock frequency control, and the performance of the CPU chip can be fully utilized to operate the CPU chip at a high speed near the limit frequency.

  According to the present invention, in an electronic device having a built-in CPU board, a circuit for supplying a clock to a CPU chip, a temperature sensor provided in a CPU chip mounting portion of the CPU board, and a detection signal of the temperature sensor And a circuit for controlling the frequency of the clock based on the temperature signal detected by the temperature sensor provided in the CPU chip mounting portion of the CPU board. Thus, the heat generation temperature of the CPU chip can be immediately reflected in the temperature control of the chip, and the performance of the CPU chip can be fully utilized to operate the CPU chip at a high speed near the limit frequency.

  According to the present invention, in an electronic device having a built-in CPU board, a circuit for supplying a clock to a CPU chip, a fin for removing heat from the CPU chip, a temperature sensor provided on the fin, A circuit for controlling the frequency of the clock based on the detection signal of the sensor, and controlling the frequency of the clock supplied to the CPU chip based on the detection signal of the temperature sensor provided on the fin of the CPU chip. With this configuration, the heat generation temperature of the CPU chip can be immediately reflected in the temperature control of the chip, and the performance of the CPU chip can be fully utilized to operate the CPU chip at a high speed near the limit frequency.

  According to the present invention, in an electronic device having a built-in CPU board, a circuit for supplying a clock to a CPU chip, a heat conductor for transmitting heat of the CPU chip, and a CPU chip via the heat conductor A temperature sensor for detecting the temperature of the CPU chip, and a circuit for controlling the frequency of the clock based on the detection signal of the temperature sensor. By controlling the frequency of the clock supplied to the CPU chip based on the signal, the heat generation temperature of the CPU chip can be immediately reflected in the temperature control of the chip, and the performance of the CPU chip can be sufficiently improved. By utilizing this, the CPU chip can operate at a high speed near the limit frequency.

  According to the present invention, in an electronic device having a built-in CPU board, a fan for cooling a CPU chip, a temperature sensor directly attached to the CPU chip, and the fan based on a detection signal of the temperature sensor. A circuit for controlling the drive of the CPU chip, and the drive control of the fan for cooling the CPU chip based on the detection signal of the temperature sensor directly attached to the CPU chip. This can be reflected in the temperature control of the chip, and the CPU chip can operate at a high speed near the limit frequency by making full use of the performance of the CPU chip.

  Further, according to the present invention, in an electronic device having a built-in CPU board, a fan for cooling a CPU chip, a temperature sensor provided on a CPU chip mounting portion of the CPU board, and a detection signal of the temperature sensor are also provided. And a circuit for driving and controlling the fan, and a configuration for driving and controlling a fan for cooling the CPU chip based on a detection signal of a temperature sensor provided on a CPU chip mounting portion of the CPU board. The heat generation temperature of the CPU chip can be immediately reflected in the temperature control of the chip, and the performance of the CPU chip can be fully utilized to operate the CPU chip at a high speed near the limit frequency.

  According to the present invention, in an electronic device incorporating a CPU board, a fin for removing heat from the CPU chip, a temperature sensor provided on the fin, and a fan for cooling the CPU chip via the fin are provided. A circuit for controlling the drive of the fan based on the detection signal of the temperature sensor, and controlling the drive of the fan for cooling the CPU chip based on the detection signal of the temperature sensor provided on the fin of the CPU chip. With this configuration, the heat generation temperature of the CPU chip can be immediately reflected in the temperature control of the chip, and the performance of the CPU chip can be fully utilized to operate the CPU chip at a high speed near the limit frequency.

  According to the present invention, in an electronic device having a built-in CPU board, a heat conductor for transmitting heat of the CPU chip, a temperature sensor for detecting a temperature of the CPU chip via the heat conductor, A fan for cooling the CPU chip via the heat conductor; and a circuit for controlling the fan based on a detection signal from the temperature sensor, and detecting the temperature sensor provided on the heat conductor of the CPU chip. By driving and controlling the fan that cools the CPU chip based on the signal, the heat generated by the CPU chip can be immediately reflected in the temperature control of the chip, making full use of the performance of the CPU chip. The CPU chip can operate at high speed near the limit frequency.

  According to the present invention, in a portable computer having a suspend / resume function, a temperature sensor for detecting a temperature of a CPU chip and a control means for executing a suspend process based on a detection signal of the temperature sensor are provided. When the temperature of the CPU chip reaches a high temperature at which the normal operation cannot be maintained, the suspend process is executed, and when the normal operation can be maintained, the suspend process is forcibly executed. Thereafter, the operation can be restored to the processing state at the time of interruption, so that highly reliable operation can be maintained.

  Further, according to the present invention, in a function expansion unit for expanding the functions of a portable computer, a sensor for detecting a temperature of a built-in chip of the portable computer mounted on the unit, and blowing a cooling air to the mounted portable computer. By providing a fan and an air outlet, and control means for controlling the drive of the fan based on the detection signal of the temperature sensor, the portable computer can be used when the portable computer is mounted on the function expansion unit. A highly reliable function expansion operation can be maintained by covering a reduction in heat radiation of the portable computer.

  An embodiment of the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram showing a first embodiment of the present invention.

  In FIG. 1, reference numeral 10 denotes a CPU board having a circuit pattern for mounting a CPU. Reference numeral 11 denotes a CPU chip mounted on the CPU board 10 at the CPU mounting position, and is mounted at the CPU mounting position on the CPU board 10 via a CPU connector or directly by soldering or the like.

  Reference numeral 12 denotes a temperature sensor (S) directly attached to the CPU chip 11, which directly measures the temperature of the heat generating portion on the upper surface of the CPU chip 11.

  Reference numeral 13 denotes a clock generator (CLK-GEN) that supplies an operation clock (CPU clock) to the CPU chip 11, and controls the frequency of the CPU clock based on a detection signal of the temperature sensor (S) 12. Here, when the temperature detected by the temperature sensor (S) 12 rises above the set temperature, the frequency of the CPU clock decreases as the temperature rises.

  A circuit 14 supplies a CPU clock to the CPU chip 11, and supplies a CPU clock generated by the clock generator (CLK-GEN) 13 to a clock input terminal (Tc) of the CPU chip 11.

  In the above configuration, the temperature sensor (S) 12 directly attached to the CPU chip 11 directly measures the temperature of the upper surface heat-generating portion of the CPU chip 11 and outputs the temperature detection signal to a clock generator (CLK-GEN) 13. To supply.

  The clock generator (CLK-GEN) 13 monitors the temperature of the CPU chip 11 based on the detection signal of the temperature sensor (S) 12, and when the temperature of the CPU chip 11 is equal to or lower than the set temperature, the clock is set in advance. A CPU clock of a specified frequency is supplied to a clock input terminal (Tc) of the CPU chip 11 via a clock supply circuit 14.

  Thereafter, when the temperature of the CPU chip 11 rises and exceeds the set temperature, the clock generator (CLK-GEN) 13 controls the frequency of the CPU clock based on the detection signal of the temperature sensor (S) 12. That is, when the temperature detected by the temperature sensor (S) 12 rises above the set temperature, the frequency of the CPU clock is lowered with the rise in temperature. This CPU clock is input to the clock input terminal (Tc) of the CPU chip 11 via the clock supply circuit 14.

  As described above, since the frequency of the CPU clock supplied to the CPU chip 11 is controlled based on the detection signal of the temperature sensor (S) 12 directly attached to the CPU chip 11, the heat generation temperature of the CPU chip 11 is reduced. This can be directly (accurately without time delay) reflected in the temperature control by the clock frequency control of the CPU chip 11. This allows the CPU chip 11 to operate at a high speed near the limit frequency by fully utilizing the performance of the CPU chip 11.

  FIG. 2 is a block diagram showing a second embodiment of the present invention.

  In FIG. 2, reference numeral 20 denotes a CPU board having a circuit pattern for mounting a CPU, and reference numeral 21 denotes a CPU chip mounted on the CPU mounting position of the CPU board 20.

  Reference numeral 22 denotes a temperature sensor (S) provided on the CPU chip mounting portion of the CPU board 10, and here, the temperature of the lower surface heating portion of the CPU chip 21 is measured directly or at a close distance.

  Reference numeral 23 denotes a clock generator (CLK-GEN) that supplies an operation clock (CPU clock) to the CPU chip 21, and controls the frequency of the CPU clock based on a detection signal of the temperature sensor (S) 22. Here, when the temperature detected by the temperature sensor (S) 22 rises above the set temperature, the frequency of the CPU clock decreases as the temperature rises.

  A circuit 24 supplies a CPU clock to the CPU chip 21, and supplies a CPU clock generated by a clock generator (CLK-GEN) 23 to a clock input terminal (Tc) of the CPU chip 21.

  In the above configuration, the temperature sensor (S) 22 provided in the CPU chip mounting portion of the CPU board 20 measures the temperature of the lower surface heat-generating portion of the CPU chip 21 directly or at a close distance, and outputs the temperature detection signal as a clock. The signal is supplied to a generator (CLK-GEN) 23.

  The clock generator (CLK-GEN) 23 monitors the temperature of the CPU chip 21 based on the detection signal of the temperature sensor (S) 22 and, when the temperature of the CPU chip 21 is equal to or lower than the set temperature, a preset value. A CPU clock having a specified frequency is supplied to a clock input terminal (Tc) of the CPU chip 21 via a clock supply circuit 24.

  Thereafter, when the temperature of the CPU chip 21 rises and exceeds the set temperature, the clock generator (CLK-GEN) 23 controls the frequency of the CPU clock based on the detection signal of the temperature sensor (S) 22. That is, here, when the temperature detected by the temperature sensor (S) 22 rises, the frequency of the CPU clock is lowered accordingly. This CPU clock is input to the clock input terminal (Tc) of the CPU chip 21 via the clock supply circuit 24.

  As described above, the frequency of the CPU clock supplied to the CPU chip 21 is controlled based on the detection signal of the temperature sensor (S) 22 provided in the CPU chip mounting portion of the CPU board 10. Can be immediately (accurately without time delay) reflected in the temperature control by the clock frequency control of the CPU chip 21. This allows the CPU chip 21 to operate at a high speed near the limit frequency by fully utilizing the performance of the CPU chip 21.

  FIG. 3 is a block diagram showing a third embodiment of the present invention.

  In FIG. 3, reference numeral 30 denotes a CPU board having a circuit pattern for mounting the CPU. Reference numeral 31 denotes a CPU chip mounted on the CPU mounting position of the CPU board 30. Fins (F) for dissipating heat generated by the chip are provided on the upper surface of the chip.

  Reference numeral 32 denotes a temperature sensor (S) directly attached to the fin (F) of the CPU chip 31. Here, the temperature of the heat generating portion of the CPU chip 31 is detected by directly measuring the temperature of the fin (F). .

  Reference numeral 33 denotes a clock generator (CLK-GEN) that supplies an operation clock (CPU clock) to the CPU chip 31, and controls the frequency of the CPU clock based on a detection signal of the temperature sensor (S) 32. Here, when the temperature detected by the temperature sensor (S) 32 rises above the set temperature, the frequency of the CPU clock decreases as the temperature rises.

  Reference numeral 34 denotes a circuit for supplying a CPU clock to the CPU chip 31, and supplies a CPU clock generated by a clock generator (CLK-GEN) 33 to a clock input terminal (Tc) of the CPU chip 31.

  In the above configuration, the temperature sensor (S) 32 directly attached to the fin (F) of the CPU chip 31 detects the temperature of the heat generating portion of the CPU chip 31 by directly measuring the temperature of the fin (F). Then, the temperature detection signal is supplied to a clock generator (CLK-GEN) 33.

  The clock generator (CLK-GEN) 33 monitors the temperature of the CPU chip 31 based on the detection signal of the temperature sensor (S) 12, and when the temperature of the CPU chip 31 is lower than the set temperature, the clock is set in advance. A CPU clock having a specified frequency is supplied to a clock input terminal (Tc) of the CPU chip 31 via a clock supply circuit.

  Thereafter, when the temperature of the CPU chip 31 rises and exceeds the set temperature, the clock generator (CLK-GEN) 33 controls the frequency of the CPU clock based on the detection signal of the temperature sensor (S) 32. That is, when the temperature detected by the temperature sensor (S) 32 rises above the set temperature, the frequency of the CPU clock is lowered with the rise in temperature. This CPU clock is input to the clock input terminal (Tc) of the CPU chip 31 via the clock supply circuit 34.

  As described above, the frequency of the CPU clock supplied to the CPU chip 31 is controlled based on the detection signal of the temperature sensor (S) 32 directly attached to the fin (F) of the CPU chip 31. The heat generation temperature of the CPU 31 can be immediately reflected (that is, accurately by shortening the delay time significantly) by controlling the clock frequency of the CPU chip 31. This allows the CPU chip 31 to operate at a high speed near the limit frequency by fully utilizing the performance of the CPU chip 31.

  FIG. 4 is a block diagram showing a fourth embodiment of the present invention.

  In FIG. 4, reference numeral 40 denotes a CPU board having a circuit pattern for mounting the CPU. Reference numeral 41 denotes a CPU chip mounted on the CPU mounting position of the CPU board 40. Here, a heat conductor (H) for transmitting heat generated by the chip is provided on the upper surface of the chip.

  Reference numeral 42 denotes a temperature sensor (S) directly attached to the heat conductor (H). Here, the temperature of the heat generation portion of the CPU chip 41 is detected by directly measuring the temperature of the heat conductor (H). .

  Reference numeral 43 denotes a clock generator (CLK-GEN) that supplies an operation clock (CPU clock) to the CPU chip 41, and controls the frequency of the CPU clock based on a detection signal of the temperature sensor (S) 42. Here, when the temperature detected by the temperature sensor (S) 42 rises above the set temperature, the frequency of the CPU clock decreases as the temperature rises.

  A circuit 44 supplies a CPU clock to the CPU chip 41, and supplies a CPU clock generated by a clock generator (CLK-GEN) 43 to a clock input terminal (Tc) of the CPU chip 41.

  In the above-described configuration, the temperature sensor (S) 42 directly attached to the heat conductor (H) directly measures the temperature of the heat conductor (H), thereby reducing the temperature of the heat-generating portion of the CPU chip 41. Then, the detection signal is supplied to a clock generator (CLK-GEN) 43.

  The clock generator (CLK-GEN) 43 monitors the temperature of the CPU chip 41 based on the detection signal of the temperature sensor (S) 42. At this time, when the temperature of the CPU chip 41 is lower than the set temperature, The CPU clock of the set specified frequency is supplied to the clock input terminal (Tc) of the CPU chip 41.

  Thereafter, when the temperature of the CPU chip 41 rises and exceeds the set temperature, the clock generator (CLK-GEN) 43 controls the frequency of the CPU clock based on the temperature indicated by the detection signal of the temperature sensor (S) 42. I do. That is, when the temperature detected by the temperature sensor (S) 42 rises above the set temperature, the frequency of the CPU clock decreases with the rise in temperature.

  This CPU clock is input to the clock input terminal (Tc) of the CPU chip 41 via the clock supply circuit 44.

  As described above, the frequency of the CPU clock supplied to the CPU chip 41 based on the detection signal of the temperature sensor (S) 42 directly attached to the heat conductor (H) transmitting the heat generated in the CPU chip 41 Because of the control, the heat generation temperature of the CPU chip 41 can be immediately reflected (that is, accurately by greatly shortening the delay time) in the temperature control by the clock frequency control of the CPU chip 41. This allows the CPU chip 41 to operate at high speed near the limit frequency by fully utilizing the performance of the CPU chip 41.

  FIG. 5 is a block diagram showing a fifth embodiment of the present invention.

  In FIG. 5, reference numeral 50 denotes a CPU board having a circuit pattern for mounting a CPU, and reference numeral 51 denotes a CPU chip mounted on the CPU mounting position of the CPU board 50.

  Reference numeral 52 denotes a temperature sensor (S) directly attached to the CPU chip 51, which directly detects the temperature of the heat generating portion of the CPU chip 51.

  Reference numeral 53 denotes an air cooling fan that blows cooling air to the CPU chip 51, and reference numeral 54 denotes a fan drive control circuit (DRV) that drives and controls the air cooling fan 53 based on a detection signal of the temperature sensor (S) 52. .

  When the detected temperature of the temperature sensor (S) 52 reaches a set value, the fan drive control circuit (DRV) 54 drives the air cooling fan 53 to blow cooling air to the CPU chip 51.

  In the above configuration, the surface temperature of the CPU chip 51 is detected by the temperature sensor (S) 52, and the detection signal is supplied to the fan drive control circuit (DRV) 54.

  When the detected temperature of the temperature sensor (S) 52 reaches the set temperature, the fan drive control circuit (DRV) 54 drives the air cooling fan 53 to blow cooling air to the CPU chip 51.

  As described above, the fan 53 for cooling the CPU chip 51 is directly driven and controlled based on the detection signal of the temperature sensor (S) 52 directly attached to the CPU chip 51. The temperature can be immediately reflected (that is, the delay time is greatly reduced) in the cooling control of the CPU chip 51. This allows the CPU chip 51 to operate at a high speed near the limit frequency by fully utilizing the performance of the CPU chip 51.

  FIG. 6 is a block diagram showing a sixth embodiment of the present invention.

  In FIG. 6, reference numeral 60 denotes a CPU board having a circuit pattern for mounting a CPU, and reference numeral 61 denotes a CPU chip mounted on the CPU mounting position of the CPU board 60.

  Reference numeral 62 denotes a temperature sensor (S) provided on a CPU chip mounting portion of the CPU chip 61. Here, the temperature of the chip heat generating portion is directly detected from the lower surface of the CPU chip 61.

  63 is an air cooling fan that blows cooling air to the CPU chip 61, and 64 is a fan drive control circuit (DRV) that drives and controls the air cooling fan 63 based on the detection signal of the temperature sensor (S) 62. .

  When the detected temperature of the temperature sensor (S) 62 reaches the set value, the fan drive control circuit (DRV) 64 drives the air cooling fan 63 to blow cooling air to the CPU chip 61.

  In the above configuration, the temperature of the CPU chip 61 is detected by the temperature sensor (S) 62, and the detection signal is supplied to the fan drive control circuit (DRV) 64.

  When the detected temperature of the temperature sensor (S) 62 reaches the set temperature, the fan drive control circuit (DRV) 64 drives the fan 63 for air cooling to blow cooling air to the CPU chip 61.

  As described above, since the fan 63 for cooling the CPU chip 61 is directly driven and controlled based on the detection signal of the temperature sensor (S) 62 directly attached to the CPU chip 61, the heat generated by the CPU chip 61 The temperature can be immediately reflected in the cooling control of the CPU chip 61 (with the delay time greatly reduced). As a result, the performance of the CPU chip 61 can be fully utilized, and the CPU chip can operate at a high speed near the limit frequency.

  FIG. 7 is a block diagram showing a seventh embodiment of the present invention.

  In FIG. 7, reference numeral 70 denotes a CPU board having a circuit pattern for mounting the CPU. Reference numeral 71 denotes a CPU chip mounted on the CPU mounting position of the CPU board 70, and a fin (F) for removing heat of the chip is provided on the upper surface of the chip.

  Reference numeral 72 denotes a temperature sensor (S) directly attached to the fins (F) of the CPU chip 71. Here, the temperature of the heat generating portion of the CPU chip 71 is detected by directly measuring the temperature of the fins (F). .

  Reference numeral 73 denotes an air cooling fan that blows cooling air to the CPU chip 71, and reference numeral 74 denotes a fan drive control circuit (DRV) that drives and controls the air cooling fan 73 based on a detection signal of the temperature sensor (S) 72. .

  When the detected temperature of the temperature sensor (S) 72 reaches a set value, the fan drive control circuit (DRV) 74 drives the air cooling fan 73 to blow cooling air to the CPU chip 71.

  In the above configuration, the temperature of the CPU chip 71 is detected by the temperature sensor (S) 72, and the detection signal is supplied to the fan drive control circuit (DRV) 74.

  When the detected temperature of the temperature sensor (S) 72 reaches the set temperature, the fan drive control circuit (DRV) 74 drives the air cooling fan 73 to blow cooling air to the CPU chip 71.

  In this manner, the fan 73 for cooling the CPU chip 71 is directly driven and controlled based on the detection signal of the temperature sensor (S) 72 directly attached to the fin (F) for radiating the heat of the CPU chip 71. Therefore, the heat generation temperature of the CPU chip 71 can be immediately reflected in the cooling control of the CPU chip 71. This allows the CPU chip 71 to operate at high speed near the limit frequency, making full use of the performance of the CPU chip 71.

  FIG. 8 is a block diagram showing an eighth embodiment of the present invention.

  In FIG. 8, reference numeral 80 denotes a CPU board having a circuit pattern for mounting the CPU. Reference numeral 81 denotes a CPU chip mounted on the CPU mounting position of the CPU board 80. Here, a heat conductor (H) for transmitting heat generated by the chip is provided on the upper surface of the chip.

  Reference numeral 82 denotes a temperature sensor (S) directly attached to the heat conductor (H) of the CPU chip 81. Here, the temperature of the heat conductor (H) is directly measured to detect the heat generation portion of the CPU chip 81. Detect temperature.

  83 is an air-cooling fan that blows cooling air to the CPU chip 81, and 84 is a fan drive control circuit (DRV) that drives and controls the air-cooling fan 83 based on a detection signal of the temperature sensor (S). .

  When the temperature detected by the temperature sensor (S) 82 reaches a set value, the fan drive control circuit (DRV) 84 drives the air cooling fan 83 to blow cooling air to the CPU chip 81.

  In the above configuration, the temperature of the CPU chip 81 is detected by the temperature sensor (S) 82, and the detection signal is supplied to the fan drive control circuit (DRV) 84.

  When the detected temperature of the temperature sensor (S) 82 reaches the set temperature, the fan drive control circuit (DRV) 84 drives the fan 83 for air cooling to blow cooling air to the CPU chip 81.

  Thus, the fan 83 for cooling the CPU chip 81 is directly driven and controlled based on the detection signal of the temperature sensor (S) 82 directly attached to the heat conductor (H) of the CPU chip 81. Thus, the heat generation temperature of the CPU chip 81 can be immediately reflected in the cooling control of the CPU chip 81. This allows the CPU chip 81 to operate at a high speed near the limit frequency by fully utilizing the performance of the CPU chip 81.

  FIG. 9 is a block diagram showing a ninth embodiment of the present invention.

  In the ninth embodiment, in a portable computer having a suspend / resume function, the temperature of a CPU chip is detected by a temperature sensor, and when the temperature sensor detects the operating limit temperature of the CPU chip, a control for executing a suspend process is performed. Have a means.

  In FIG. 9, reference numeral 91 denotes a CPU (CPU chip) for controlling the entire system, and a main memory (MEM) 94, a storage memory 95, and various input / output devices (I / O) via a system bus. ) Is connected.

  Reference numeral 92 denotes a temperature sensor (S) for measuring a chip temperature of the CPU 91. Here, as an example, it is assumed that the temperature sensor is directly attached to the chip as shown in FIG. 1 or FIG.

  An interrupt generator (IRG) 93 monitors the temperature detected by the temperature sensor (S) 92 and generates a forced interrupt when the detected temperature reaches a predetermined operation limit temperature. When the temperature reaches the operation limit temperature, a forced interrupt is generated for the CPU 91.

  Reference numeral 95 denotes a suspend / resume processing unit (S / R) resident in the main memory (MEM) 94, and is activated when the power is turned on / off when the resume mode is set in the setup.

  The suspend / resume function itself is the same as that of a normal personal computer. The resume processing unit is forcibly activated, and the suspend processing is performed. After the execution of the suspend process, the power is turned off (power off). Thereafter, when the power is turned on (power-on), the resume processing is executed, the processing is restored to the processing state at the time of interruption, and the processing from the time of interruption can be continued.

  In the above configuration, the temperature sensor (S) 92 measures the chip temperature of the CPU 91 and supplies the temperature detection signal to the interrupt generator (IRG) 93.

  An interrupt generation unit (IRG) 93 monitors the detected temperature of the temperature sensor (S) 92 and generates a forced interrupt to the CPU 91 when the detected temperature reaches a predetermined operation limit temperature.

  When the CPU 91 receives a forced interrupt from the interrupt generation section (IRG) 93, it ends the processing at an appropriate processing stage, activates the suspend / resume processing section (S / R) 95, and executes the suspend processing. The data resulting from the suspend processing is stored in the storage memory 95.

  In this way, when the chip temperature of the CPU 91 reaches a high temperature at which normal operation cannot be maintained, by executing the suspend process, when the normal operation can be maintained, the processing is restored to the interrupted processing state. Since processing can be continued, highly reliable operation can be maintained.

  FIG. 10 is a block diagram showing a ninth embodiment of the present invention.

  In the tenth embodiment, in an extension unit for expanding the functions of a portable computer, a sensor for detecting a temperature of a chip built in the portable computer mounted on the unit, and a fan for blowing cooling air to the mounted portable computer And a control means for controlling the drive of the fan based on the detection signal of the temperature sensor to cover a reduction in heat radiation of the portable computer when the portable computer is mounted on the function expansion unit. Thus, a highly reliable function expansion operation can be maintained.

  In FIG. 10, reference numeral 100 denotes an extension unit that extends the functions of the portable computer, and reference numeral 200 denotes a portable computer mounted on the extension unit 100.

  Reference numeral 101 denotes a temperature sensor (S) provided in a portable computer mounting portion of the extension unit 100. Here, two sensors monitor the internal temperature of the portable computer.

  Reference numeral 102 denotes an air-cooling fan for sending cooling air to the ventilation port CA of the portable computer 200 mounted on the portable computer mounting unit via the ventilation port CB. Reference numeral 103 denotes a detection signal of the temperature sensors (S) 101, 101. It is a fan drive control circuit (DRV) that drives and controls the fan 102 for air cooling.

  When the detected temperature of the temperature sensors (S) 101, 101 reaches a set value, the fan drive control circuit (DRV) 103 drives the air-cooling fan 102 to the portable computer 200 via the ventilation ports CA, CB. Send in cooling air.

  In the above configuration, the internal temperature of the portable computer 200 mounted on the portable computer mounting section of the extension unit 100 is detected by the temperature sensors (S) 101, 101, and the respective detection signals are sent to the fan drive control circuit (DRV) 103. Supplied to

  When the detected temperature of one of the temperature sensors (S) 101, 101 reaches the set temperature, the fan drive control circuit (DRV) 103 drives the air-cooling fan 102 to connect the ventilation openings CA, CB to the portable computer 200. Cooling air is sent through.

  By having such a cooling mechanism for the portable computer, it is possible to cover a reduction in heat radiation of the portable computer 200 when the portable computer 200 is mounted on the extension unit 100, and to maintain a highly reliable function expansion operation.

  FIG. 11 is a block diagram showing an eleventh embodiment of the present invention.

  The eleventh embodiment is a combination of the above-described second embodiment shown in FIG. 2 and the sixth embodiment shown in FIG. 6. Here, a part of the sixth embodiment is added to the second embodiment. The configuration is shown, and the same components are denoted by the same reference numerals and the description thereof will be omitted.

  In the eleventh embodiment, the temperature sensor (S) 22 provided in the CPU chip mounting portion of the CPU board 20 measures the temperature of the heat-generating portion of the lower surface of the CPU chip 21 directly or at a short distance. The detection signal is supplied to a clock generator (CLK-GEN) 23 and to a fan drive control circuit (DRV) 64.

  The clock generator (CLK-GEN) 23 monitors the temperature of the CPU chip 21 based on the detection signal of the temperature sensor (S) 22 and, when the temperature of the CPU chip 21 is equal to or lower than the set temperature, a preset value. A CPU clock having a specified frequency is supplied to a clock input terminal (Tc) of the CPU chip 21 via a clock supply circuit 24.

  Further, the fan drive control circuit (DRV) 64 monitors the temperature of the CPU chip 21 based on the detection signal of the temperature sensor (S) 22, and when the temperature of the CPU chip 21 is lower than the set temperature, the fan 63 It has been stopped.

  Thereafter, when the detected temperature of the temperature sensor (S) 22 reaches the set temperature, the fan drive control circuit (DRV) 64 drives the fan 63 to blow cooling air to the CPU chip 21.

  When the temperature of the CPU chip 21 rises and exceeds the set temperature, the clock generator (CLK-GEN) 23 controls the frequency of the CPU clock based on the detection signal of the temperature sensor (S) 22. That is, here, when the temperature detected by the temperature sensor (S) 22 rises, the frequency of the CPU clock is lowered accordingly. This CPU clock is input to the clock input terminal (Tc) of the CPU chip 21 via the clock supply circuit 24.

  At this time, by setting the set temperature of the fan drive control circuit (DRV) 64 lower than the set temperature of the clock generator (CLK-GEN) 23, the clock generator (CLK-GEN) 23 reduces the CPU clock. Since the fan 63 is driven to cool the CPU chip 21 before the operation, the CPU chip can be operated at a high speed near the limit frequency for a long time, and the set temperature of the fan drive control circuit (DRV) 64 and clock generation If the set temperature of the device (CLK-GEN) 23 is set equal, cooling by the fan 63 and reduction of the CPU clock are started at the same time, and it is possible to return to the high-speed CPU clock state in a short time.

  In the above-described embodiment, only one temperature sensor is shown except for FIG. 11, but a plurality of temperature sensors may be provided in a dotted manner. Also, for example, a combination of any of FIG. 1, FIG. 2, FIG. 3, and FIG. 4 or a combination of any of FIG. 1, FIG. 2, FIG. 3, and FIG. There may be.

  An embodiment of the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram showing a first embodiment of the present invention.

  In FIG. 1, reference numeral 10 denotes a CPU board having a circuit pattern for mounting a CPU. Reference numeral 11 denotes a CPU chip mounted on the CPU board 10 at the CPU mounting position, and is mounted at the CPU mounting position on the CPU board 10 via a CPU connector or directly by soldering or the like.

  Reference numeral 12 denotes a temperature sensor (S) directly attached to the CPU chip 11, which directly measures the temperature of the heat generating portion on the upper surface of the CPU chip 11.

  Reference numeral 13 denotes a clock generator (CLK-GEN) that supplies an operation clock (CPU clock) to the CPU chip 11, and controls the frequency of the CPU clock based on a detection signal of the temperature sensor (S) 12. Here, when the temperature detected by the temperature sensor (S) 12 rises above the set temperature, the frequency of the CPU clock decreases as the temperature rises.

  A circuit 14 supplies a CPU clock to the CPU chip 11, and supplies a CPU clock generated by the clock generator (CLK-GEN) 13 to a clock input terminal (Tc) of the CPU chip 11.

  In the above configuration, the temperature sensor (S) 12 directly attached to the CPU chip 11 directly measures the temperature of the upper surface heat-generating portion of the CPU chip 11 and outputs the temperature detection signal to a clock generator (CLK-GEN) 13. To supply.

  The clock generator (CLK-GEN) 13 monitors the temperature of the CPU chip 11 based on the detection signal of the temperature sensor (S) 12, and when the temperature of the CPU chip 11 is equal to or lower than the set temperature, the clock is set in advance. A CPU clock of a specified frequency is supplied to a clock input terminal (Tc) of the CPU chip 11 via a clock supply circuit 14.

  Thereafter, when the temperature of the CPU chip 11 rises and exceeds the set temperature, the clock generator (CLK-GEN) 13 controls the frequency of the CPU clock based on the detection signal of the temperature sensor (S) 12. That is, when the temperature detected by the temperature sensor (S) 12 rises above the set temperature, the frequency of the CPU clock is lowered with the rise in temperature. This CPU clock is input to the clock input terminal (Tc) of the CPU chip 11 via the clock supply circuit 14.

  As described above, since the frequency of the CPU clock supplied to the CPU chip 11 is controlled based on the detection signal of the temperature sensor (S) 12 directly attached to the CPU chip 11, the heat generation temperature of the CPU chip 11 is reduced. This can be directly (accurately without time delay) reflected in the temperature control by the clock frequency control of the CPU chip 11. This allows the CPU chip 11 to operate at a high speed near the limit frequency by fully utilizing the performance of the CPU chip 11.

  FIG. 2 is a block diagram showing a second embodiment of the present invention.

  In FIG. 2, reference numeral 20 denotes a CPU board having a circuit pattern for mounting a CPU, and reference numeral 21 denotes a CPU chip mounted on the CPU mounting position of the CPU board 20.

  Reference numeral 22 denotes a temperature sensor (S) provided on the CPU chip mounting portion of the CPU board 10, and here, the temperature of the lower surface heating portion of the CPU chip 21 is measured directly or at a close distance.

  Reference numeral 23 denotes a clock generator (CLK-GEN) that supplies an operation clock (CPU clock) to the CPU chip 21, and controls the frequency of the CPU clock based on a detection signal of the temperature sensor (S) 22. Here, when the temperature detected by the temperature sensor (S) 22 rises above the set temperature, the frequency of the CPU clock decreases as the temperature rises.

  A circuit 24 supplies a CPU clock to the CPU chip 21, and supplies a CPU clock generated by a clock generator (CLK-GEN) 23 to a clock input terminal (Tc) of the CPU chip 21.

  In the above configuration, the temperature sensor (S) 22 provided in the CPU chip mounting portion of the CPU board 20 measures the temperature of the lower surface heat-generating portion of the CPU chip 21 directly or at a close distance, and outputs the temperature detection signal as a clock. The signal is supplied to a generator (CLK-GEN) 23.

  The clock generator (CLK-GEN) 23 monitors the temperature of the CPU chip 21 based on the detection signal of the temperature sensor (S) 22 and, when the temperature of the CPU chip 21 is equal to or lower than the set temperature, a preset value. A CPU clock having a specified frequency is supplied to a clock input terminal (Tc) of the CPU chip 21 via a clock supply circuit 24.

  Thereafter, when the temperature of the CPU chip 21 rises and exceeds the set temperature, the clock generator (CLK-GEN) 23 controls the frequency of the CPU clock based on the detection signal of the temperature sensor (S) 22. That is, here, when the temperature detected by the temperature sensor (S) 22 rises, the frequency of the CPU clock is lowered accordingly. This CPU clock is input to the clock input terminal (Tc) of the CPU chip 21 via the clock supply circuit 24.

  As described above, the frequency of the CPU clock supplied to the CPU chip 21 is controlled based on the detection signal of the temperature sensor (S) 22 provided in the CPU chip mounting portion of the CPU board 10. Can be immediately (accurately without time delay) reflected in the temperature control by the clock frequency control of the CPU chip 21. This allows the CPU chip 21 to operate at a high speed near the limit frequency by fully utilizing the performance of the CPU chip 21.

  FIG. 3 is a block diagram showing a third embodiment of the present invention.

  In FIG. 3, reference numeral 30 denotes a CPU board having a circuit pattern for mounting the CPU. Reference numeral 31 denotes a CPU chip mounted on the CPU mounting position of the CPU board 30. Fins (F) for dissipating heat generated by the chip are provided on the upper surface of the chip.

  Reference numeral 32 denotes a temperature sensor (S) directly attached to the fin (F) of the CPU chip 31. Here, the temperature of the heat generating portion of the CPU chip 31 is detected by directly measuring the temperature of the fin (F). .

  Reference numeral 33 denotes a clock generator (CLK-GEN) that supplies an operation clock (CPU clock) to the CPU chip 31, and controls the frequency of the CPU clock based on a detection signal of the temperature sensor (S) 32. Here, when the temperature detected by the temperature sensor (S) 32 rises above the set temperature, the frequency of the CPU clock decreases as the temperature rises.

  Reference numeral 34 denotes a circuit for supplying a CPU clock to the CPU chip 31, and supplies a CPU clock generated by a clock generator (CLK-GEN) 33 to a clock input terminal (Tc) of the CPU chip 31.

  In the above configuration, the temperature sensor (S) 32 directly attached to the fin (F) of the CPU chip 31 detects the temperature of the heat generating portion of the CPU chip 31 by directly measuring the temperature of the fin (F). Then, the temperature detection signal is supplied to a clock generator (CLK-GEN) 33.

  The clock generator (CLK-GEN) 33 monitors the temperature of the CPU chip 31 based on the detection signal of the temperature sensor (S) 12, and when the temperature of the CPU chip 31 is lower than the set temperature, the clock is set in advance. A CPU clock having a specified frequency is supplied to a clock input terminal (Tc) of the CPU chip 31 via a clock supply circuit.

  Thereafter, when the temperature of the CPU chip 31 rises and exceeds the set temperature, the clock generator (CLK-GEN) 33 controls the frequency of the CPU clock based on the detection signal of the temperature sensor (S) 32. That is, when the temperature detected by the temperature sensor (S) 32 rises above the set temperature, the frequency of the CPU clock is lowered with the rise in temperature. This CPU clock is input to the clock input terminal (Tc) of the CPU chip 31 via the clock supply circuit 34.

  As described above, the frequency of the CPU clock supplied to the CPU chip 31 is controlled based on the detection signal of the temperature sensor (S) 32 directly attached to the fin (F) of the CPU chip 31. The heat generation temperature of the CPU 31 can be immediately reflected (that is, accurately by shortening the delay time significantly) by controlling the clock frequency of the CPU chip 31. This allows the CPU chip 31 to operate at a high speed near the limit frequency by fully utilizing the performance of the CPU chip 31.

  FIG. 4 is a block diagram showing a fourth embodiment of the present invention.

  In FIG. 4, reference numeral 40 denotes a CPU board having a circuit pattern for mounting the CPU. Reference numeral 41 denotes a CPU chip mounted on the CPU mounting position of the CPU board 40. Here, a heat conductor (H) for transmitting heat generated by the chip is provided on the upper surface of the chip.

  Reference numeral 42 denotes a temperature sensor (S) directly attached to the heat conductor (H). Here, the temperature of the heat generation portion of the CPU chip 41 is detected by directly measuring the temperature of the heat conductor (H). .

  Reference numeral 43 denotes a clock generator (CLK-GEN) that supplies an operation clock (CPU clock) to the CPU chip 41, and controls the frequency of the CPU clock based on a detection signal of the temperature sensor (S) 42. Here, when the temperature detected by the temperature sensor (S) 42 rises above the set temperature, the frequency of the CPU clock decreases as the temperature rises.

  A circuit 44 supplies a CPU clock to the CPU chip 41, and supplies a CPU clock generated by a clock generator (CLK-GEN) 43 to a clock input terminal (Tc) of the CPU chip 41.

  In the above-described configuration, the temperature sensor (S) 42 directly attached to the heat conductor (H) directly measures the temperature of the heat conductor (H), thereby reducing the temperature of the heat-generating portion of the CPU chip 41. Then, the detection signal is supplied to a clock generator (CLK-GEN) 43.

  The clock generator (CLK-GEN) 43 monitors the temperature of the CPU chip 41 based on the detection signal of the temperature sensor (S) 42. At this time, when the temperature of the CPU chip 41 is lower than the set temperature, The CPU clock of the set specified frequency is supplied to the clock input terminal (Tc) of the CPU chip 41.

  Thereafter, when the temperature of the CPU chip 41 rises and exceeds the set temperature, the clock generator (CLK-GEN) 43 controls the frequency of the CPU clock based on the temperature indicated by the detection signal of the temperature sensor (S) 42. I do. That is, when the temperature detected by the temperature sensor (S) 42 rises above the set temperature, the frequency of the CPU clock decreases with the rise in temperature.

  This CPU clock is input to the clock input terminal (Tc) of the CPU chip 41 via the clock supply circuit 44.

  As described above, the frequency of the CPU clock supplied to the CPU chip 41 based on the detection signal of the temperature sensor (S) 42 directly attached to the heat conductor (H) transmitting the heat generated in the CPU chip 41 Because of the control, the heat generation temperature of the CPU chip 41 can be immediately reflected (that is, accurately by greatly shortening the delay time) in the temperature control by the clock frequency control of the CPU chip 41. This allows the CPU chip 41 to operate at high speed near the limit frequency by fully utilizing the performance of the CPU chip 41.

  FIG. 5 is a block diagram showing a fifth embodiment of the present invention.

  In FIG. 5, reference numeral 50 denotes a CPU board having a circuit pattern for mounting a CPU, and reference numeral 51 denotes a CPU chip mounted on the CPU mounting position of the CPU board 50.

  Reference numeral 52 denotes a temperature sensor (S) directly attached to the CPU chip 51, which directly detects the temperature of the heat generating portion of the CPU chip 51.

  Reference numeral 53 denotes an air cooling fan that blows cooling air to the CPU chip 51, and reference numeral 54 denotes a fan drive control circuit (DRV) that drives and controls the air cooling fan 53 based on a detection signal of the temperature sensor (S) 52. .

  When the detected temperature of the temperature sensor (S) 52 reaches a set value, the fan drive control circuit (DRV) 54 drives the air cooling fan 53 to blow cooling air to the CPU chip 51.

  In the above configuration, the surface temperature of the CPU chip 51 is detected by the temperature sensor (S) 52, and the detection signal is supplied to the fan drive control circuit (DRV) 54.

  When the detected temperature of the temperature sensor (S) 52 reaches the set temperature, the fan drive control circuit (DRV) 54 drives the air cooling fan 53 to blow cooling air to the CPU chip 51.

  As described above, the fan 53 for cooling the CPU chip 51 is directly driven and controlled based on the detection signal of the temperature sensor (S) 52 directly attached to the CPU chip 51. The temperature can be immediately reflected (that is, the delay time is greatly reduced) in the cooling control of the CPU chip 51. This allows the CPU chip 51 to operate at a high speed near the limit frequency by fully utilizing the performance of the CPU chip 51.

  FIG. 6 is a block diagram showing a sixth embodiment of the present invention.

  In FIG. 6, reference numeral 60 denotes a CPU board having a circuit pattern for mounting a CPU, and reference numeral 61 denotes a CPU chip mounted on the CPU mounting position of the CPU board 60.

  Reference numeral 62 denotes a temperature sensor (S) provided on a CPU chip mounting portion of the CPU chip 61. Here, the temperature of the chip heat generating portion is directly detected from the lower surface of the CPU chip 61.

  63 is an air cooling fan that blows cooling air to the CPU chip 61, and 64 is a fan drive control circuit (DRV) that drives and controls the air cooling fan 63 based on the detection signal of the temperature sensor (S) 62. .

  When the detected temperature of the temperature sensor (S) 62 reaches the set value, the fan drive control circuit (DRV) 64 drives the air cooling fan 63 to blow cooling air to the CPU chip 61.

  In the above configuration, the temperature of the CPU chip 61 is detected by the temperature sensor (S) 62, and the detection signal is supplied to the fan drive control circuit (DRV) 64.

  When the detected temperature of the temperature sensor (S) 62 reaches the set temperature, the fan drive control circuit (DRV) 64 drives the fan 63 for air cooling to blow cooling air to the CPU chip 61.

  As described above, since the fan 63 for cooling the CPU chip 61 is directly driven and controlled based on the detection signal of the temperature sensor (S) 62 directly attached to the CPU chip 61, the heat generated by the CPU chip 61 The temperature can be immediately reflected in the cooling control of the CPU chip 61 (with the delay time greatly reduced). As a result, the performance of the CPU chip 61 can be fully utilized, and the CPU chip can operate at a high speed near the limit frequency.

  FIG. 7 is a block diagram showing a seventh embodiment of the present invention.

  In FIG. 7, reference numeral 70 denotes a CPU board having a circuit pattern for mounting the CPU. Reference numeral 71 denotes a CPU chip mounted on the CPU mounting position of the CPU board 70, and a fin (F) for removing heat of the chip is provided on the upper surface of the chip.

  Reference numeral 72 denotes a temperature sensor (S) directly attached to the fins (F) of the CPU chip 71. Here, the temperature of the heat generating portion of the CPU chip 71 is detected by directly measuring the temperature of the fins (F). .

  Reference numeral 73 denotes an air cooling fan that blows cooling air to the CPU chip 71, and reference numeral 74 denotes a fan drive control circuit (DRV) that drives and controls the air cooling fan 73 based on a detection signal of the temperature sensor (S) 72. .

  When the detected temperature of the temperature sensor (S) 72 reaches a set value, the fan drive control circuit (DRV) 74 drives the air cooling fan 73 to blow cooling air to the CPU chip 71.

  In the above configuration, the temperature of the CPU chip 71 is detected by the temperature sensor (S) 72, and the detection signal is supplied to the fan drive control circuit (DRV) 74.

  When the detected temperature of the temperature sensor (S) 72 reaches the set temperature, the fan drive control circuit (DRV) 74 drives the air cooling fan 73 to blow cooling air to the CPU chip 71.

  In this manner, the fan 73 for cooling the CPU chip 71 is directly driven and controlled based on the detection signal of the temperature sensor (S) 72 directly attached to the fin (F) for radiating the heat of the CPU chip 71. Therefore, the heat generation temperature of the CPU chip 71 can be immediately reflected in the cooling control of the CPU chip 71. This allows the CPU chip 71 to operate at high speed near the limit frequency, making full use of the performance of the CPU chip 71.

  FIG. 8 is a block diagram showing an eighth embodiment of the present invention.

  In FIG. 8, reference numeral 80 denotes a CPU board having a circuit pattern for mounting the CPU. Reference numeral 81 denotes a CPU chip mounted on the CPU mounting position of the CPU board 80. Here, a heat conductor (H) for transmitting heat generated by the chip is provided on the upper surface of the chip.

  Reference numeral 82 denotes a temperature sensor (S) directly attached to the heat conductor (H) of the CPU chip 81. Here, the temperature of the heat conductor (H) is directly measured to detect the heat generation portion of the CPU chip 81. Detect temperature.

  83 is an air-cooling fan that blows cooling air to the CPU chip 81, and 84 is a fan drive control circuit (DRV) that drives and controls the air-cooling fan 83 based on a detection signal of the temperature sensor (S). .

  When the temperature detected by the temperature sensor (S) 82 reaches a set value, the fan drive control circuit (DRV) 84 drives the air cooling fan 83 to blow cooling air to the CPU chip 81.

  In the above configuration, the temperature of the CPU chip 81 is detected by the temperature sensor (S) 82, and the detection signal is supplied to the fan drive control circuit (DRV) 84.

  When the detected temperature of the temperature sensor (S) 82 reaches the set temperature, the fan drive control circuit (DRV) 84 drives the fan 83 for air cooling to blow cooling air to the CPU chip 81.

  Thus, the fan 83 for cooling the CPU chip 81 is directly driven and controlled based on the detection signal of the temperature sensor (S) 82 directly attached to the heat conductor (H) of the CPU chip 81. Thus, the heat generation temperature of the CPU chip 81 can be immediately reflected in the cooling control of the CPU chip 81. This allows the CPU chip 81 to operate at a high speed near the limit frequency by fully utilizing the performance of the CPU chip 81.

  FIG. 9 is a block diagram showing a ninth embodiment of the present invention.

  In the ninth embodiment, in a portable computer having a suspend / resume function, the temperature of a CPU chip is detected by a temperature sensor, and when the temperature sensor detects the operating limit temperature of the CPU chip, a control for executing a suspend process is performed. Have a means.

  In FIG. 9, reference numeral 91 denotes a CPU (CPU chip) for controlling the entire system, and a main memory (MEM) 94, a storage memory 95, and various input / output devices (I / O) via a system bus. ) Is connected.

  Reference numeral 92 denotes a temperature sensor (S) for measuring a chip temperature of the CPU 91. Here, as an example, it is assumed that the temperature sensor is directly attached to the chip as shown in FIG. 1 or FIG.

  An interrupt generator (IRG) 93 monitors the temperature detected by the temperature sensor (S) 92 and generates a forced interrupt when the detected temperature reaches a predetermined operation limit temperature. When the temperature reaches the operation limit temperature, a forced interrupt is generated for the CPU 91.

  Reference numeral 95 denotes a suspend / resume processing unit (S / R) resident in the main memory (MEM) 94, and is activated when the power is turned on / off when the resume mode is set in the setup.

  The suspend / resume function itself is the same as that of a normal personal computer. The resume processing unit is forcibly activated, and the suspend processing is performed. After the execution of the suspend process, the power is turned off (power off). Thereafter, when the power is turned on (power-on), the resume processing is executed, the processing is restored to the processing state at the time of interruption, and the processing from the time of interruption can be continued.

  In the above configuration, the temperature sensor (S) 92 measures the chip temperature of the CPU 91 and supplies the temperature detection signal to the interrupt generator (IRG) 93.

  An interrupt generation unit (IRG) 93 monitors the detected temperature of the temperature sensor (S) 92 and generates a forced interrupt to the CPU 91 when the detected temperature reaches a predetermined operation limit temperature.

  When the CPU 91 receives a forced interrupt from the interrupt generation section (IRG) 93, it ends the processing at an appropriate processing stage, activates the suspend / resume processing section (S / R) 95, and executes the suspend processing. The data resulting from the suspend processing is stored in the storage memory 95.

  In this way, when the chip temperature of the CPU 91 reaches a high temperature at which normal operation cannot be maintained, by executing the suspend process, when the normal operation can be maintained, the processing is restored to the interrupted processing state. Since processing can be continued, highly reliable operation can be maintained.

  FIG. 10 is a block diagram showing a ninth embodiment of the present invention.

  In the tenth embodiment, in an extension unit for expanding the functions of a portable computer, a sensor for detecting a temperature of a chip built in the portable computer mounted on the unit, and a fan for blowing cooling air to the mounted portable computer And a control means for controlling the drive of the fan based on the detection signal of the temperature sensor to cover a reduction in heat radiation of the portable computer when the portable computer is mounted on the function expansion unit. Thus, a highly reliable function expansion operation can be maintained.

  In FIG. 10, reference numeral 100 denotes an extension unit that extends the functions of the portable computer, and reference numeral 200 denotes a portable computer mounted on the extension unit 100.

  Reference numeral 101 denotes a temperature sensor (S) provided in a portable computer mounting portion of the extension unit 100. Here, two sensors monitor the internal temperature of the portable computer.

  Reference numeral 102 denotes an air-cooling fan for sending cooling air to the ventilation port CA of the portable computer 200 mounted on the portable computer mounting unit via the ventilation port CB. Reference numeral 103 denotes a detection signal of the temperature sensors (S) 101, 101. It is a fan drive control circuit (DRV) that drives and controls the fan 102 for air cooling.

  When the detected temperature of the temperature sensors (S) 101, 101 reaches a set value, the fan drive control circuit (DRV) 103 drives the air-cooling fan 102 to the portable computer 200 via the ventilation ports CA, CB. Send in cooling air.

  In the above configuration, the internal temperature of the portable computer 200 mounted on the portable computer mounting section of the extension unit 100 is detected by the temperature sensors (S) 101, 101, and the respective detection signals are sent to the fan drive control circuit (DRV) 103. Supplied to

  When the detected temperature of any of the temperature sensors (S) 101, 101 reaches the set temperature, the fan drive control circuit (DRV) 103 drives the air-cooling fan 102 to connect the ventilation openings CA, CB to the portable computer 200. And send cooling air through it.

  By having such a cooling mechanism for the portable computer, it is possible to cover a reduction in heat radiation of the portable computer 200 when the portable computer 200 is mounted on the extension unit 100, and to maintain a highly reliable function expansion operation.

  FIG. 11 is a block diagram showing an eleventh embodiment of the present invention.

  The eleventh embodiment is a combination of the above-described second embodiment shown in FIG. 2 and the sixth embodiment shown in FIG. 6. Here, a part of the sixth embodiment is added to the second embodiment. The configuration is shown, and the same components are denoted by the same reference numerals and the description thereof will be omitted.

  In the eleventh embodiment, the temperature sensor (S) 22 provided in the CPU chip mounting portion of the CPU board 20 measures the temperature of the heat-generating portion of the lower surface of the CPU chip 21 directly or at a short distance. The detection signal is supplied to a clock generator (CLK-GEN) 23 and to a fan drive control circuit (DRV) 64.

  The clock generator (CLK-GEN) 23 monitors the temperature of the CPU chip 21 based on the detection signal of the temperature sensor (S) 22 and, when the temperature of the CPU chip 21 is equal to or lower than the set temperature, a preset value. A CPU clock having a specified frequency is supplied to a clock input terminal (Tc) of the CPU chip 21 via a clock supply circuit 24.

  Further, the fan drive control circuit (DRV) 64 monitors the temperature of the CPU chip 21 based on the detection signal of the temperature sensor (S) 22, and when the temperature of the CPU chip 21 is lower than the set temperature, the fan 63 It has been stopped.

  Thereafter, when the detected temperature of the temperature sensor (S) 22 reaches the set temperature, the fan drive control circuit (DRV) 64 drives the fan 63 to blow cooling air to the CPU chip 21.

  When the temperature of the CPU chip 21 rises and exceeds the set temperature, the clock generator (CLK-GEN) 23 controls the frequency of the CPU clock based on the detection signal of the temperature sensor (S) 22. That is, here, when the temperature detected by the temperature sensor (S) 22 rises, the frequency of the CPU clock is lowered accordingly. This CPU clock is input to the clock input terminal (Tc) of the CPU chip 21 via the clock supply circuit 24.

  At this time, by setting the set temperature of the fan drive control circuit (DRV) 64 lower than the set temperature of the clock generator (CLK-GEN) 23, the clock generator (CLK-GEN) 23 reduces the CPU clock. Since the fan 63 is driven to cool the CPU chip 21 before the operation, the CPU chip can be operated at a high speed near the limit frequency for a long time, and the set temperature of the fan drive control circuit (DRV) 64 and clock generation If the set temperature of the device (CLK-GEN) 23 is set equal, cooling by the fan 63 and reduction of the CPU clock are started at the same time, and it is possible to return to the high-speed CPU clock state in a short time.

  In the above-described embodiment, only one temperature sensor is shown except for FIG. 11, but a plurality of temperature sensors may be provided in a dotted manner. Also, for example, a combination of any of FIG. 1, FIG. 2, FIG. 3, and FIG. 4 or a combination of any of FIG. 1, FIG. 2, FIG. 3, and FIG. There may be.

FIG. 1 is a block diagram showing a first embodiment of the present invention. FIG. 6 is a block diagram showing a second embodiment of the present invention. FIG. 9 is a block diagram showing a third embodiment of the present invention. FIG. 9 is a block diagram showing a fourth embodiment of the present invention. FIG. 13 is a block diagram showing a fifth embodiment of the present invention. FIG. 13 is a block diagram showing a sixth embodiment of the present invention. FIG. 14 is a block diagram showing a seventh embodiment of the present invention. FIG. 16 is a block diagram showing an eighth embodiment of the present invention. FIG. 16 is a block diagram showing a ninth embodiment of the present invention. FIG. 16 is a block diagram showing a tenth embodiment of the present invention. FIG. 21 is a block diagram showing an eleventh embodiment of the present invention.

Explanation of reference numerals

  10, 20, 30, 40, 50, 60, 70, 80 ... CPU board, 11, 21, 31, 41, 51, 61, 71, 81, 91 ... CPU chip, 12, 22, 32, 42, 52, 62, 72, 82, 92 ... temperature sensors (S), 13, 23, 33, 43 ... clock generators (CLK-GEN), 14, 24, 34, 44 ... clock supply circuits, 53, 63, 73, 83 ... Fan, 54, 64, 74, 84 ... Fan drive control circuit (DRV), 93 ... Interrupt generation unit (IRG), 94 ... Main memory (MEM), 95 ... Suspend / resume processing unit (S / R), 96 ... Storage memory, Tc ... clock input terminal, F ... fin, H ... thermal conductor.

Claims (8)

A CPU,
A temperature sensor for detecting a temperature of the CPU;
Means for shutting off a power supply when the temperature detected by the temperature sensor exceeds a predetermined value. A CPU,
A storage unit,
A temperature sensor for detecting a temperature of the CPU;
Means for storing a state of the system in the storage unit when the temperature detected by the temperature sensor exceeds a predetermined value. Clock generation means for generating an operation clock of the CPU;
A temperature sensor for detecting a temperature of the CPU;
Means for controlling the clock generation means to reduce the operating clock of the CPU when the temperature detected by the temperature sensor exceeds a predetermined value. Clock generation means for generating an operation clock of the CPU;
A temperature sensor for detecting a temperature of the CPU;
Means for controlling the clock generation means to decrease the operation clock in accordance with an increase in the temperature detected by the temperature sensor. A CPU,
Clock generating means for supplying a clock to the CPU;
A temperature sensor for detecting a temperature of the CPU;
Means for controlling the clock generation means to reduce the clock supplied to the CPU when the temperature detected by the temperature sensor exceeds a predetermined value. Clock generation means for generating an operation clock of the CPU;
A temperature sensor for detecting a temperature of the CPU;
An air cooling fan for blowing cooling air to the CPU;
When the temperature detected by the temperature sensor exceeds a predetermined value, control means for controlling the clock generation means to reduce the operation clock of the CPU;
An electronic apparatus, comprising: a drive control unit configured to drive and control the fan based on a detection signal of the temperature sensor. Clock generation means for generating an operation clock of the CPU;
A temperature sensor for detecting a temperature of the CPU;
An air cooling fan for blowing cooling air to the CPU;
Control means for controlling the clock generation means to decrease the operation clock with an increase in the temperature detected by the temperature sensor;
Electronic control equipment comprising: a drive control unit configured to drive and control the fan based on a detection signal of the temperature sensor. A CPU,
Clock generating means for supplying a clock to the CPU;
A temperature sensor for detecting a temperature of the CPU;
An air cooling fan for blowing cooling air to the CPU;
When the temperature detected by the temperature sensor exceeds a predetermined value, control means for controlling the clock generation means to reduce a clock supplied to the CPU;
Electronic control equipment comprising: a drive control unit configured to drive and control the fan based on a detection signal of the temperature sensor.

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