TWI486742B - Power management method for an electronic device and related device - Google Patents

Description

Power management method for an electronic device and related device

The present invention relates to a power management method and related device, and more particularly to a power management method for a touch screen of an electronic device and related devices.

Due to advances in technology, there are many types of input devices available today to provide users with control over electronic products to perform corresponding programs or operations, such as keyboards, mice, trackballs, touch pads, joysticks, and the like. However, as electronic products tend to be smaller, lighter, and more integrated, traditional input devices are no longer able to meet user needs, and there is no room for a variety of input devices.

The touch panel has the user-friendly functions of mouse, keyboard and handwriting input, and includes features such as power saving and thin profile. Therefore, more and more users choose touch panel as electronic product. Input device. Through the touch panel, the user can touch or display the cursor on the screen or select the option on the screen by simply touching the touch panel with a finger or a light pen. Therefore, many electronic products, such as personal digital assistants (PDAs), laptops, mobile phones, global positioning systems (GPS), etc., all use touch panels as their input devices.

Although the touch panel can integrate functions such as a mouse, a keyboard, and handwriting input, in the case of conventional electronic products, it is still necessary to achieve power management by using specific buttons. For example, when the mobile phone is turned off, the user must press the power button to generate a power-on signal, and let the system turn on the power of the mobile phone. In other words, a power button is still required in the electronic device, resulting in an increase in manufacturing cost.

Therefore, the main object of the present invention is to provide a power management method for a touch screen of an electronic device and related devices.

The present invention is directed to a power management method for an electronic device. The electronic device includes a touch screen. The power management method includes detecting whether the touch screen is detected when the electronic device is operating in a first power mode. Receiving a mode switching signal request; and operating the electronic device in a second power mode when the touch screen receives the mode switching signal request.

The invention further discloses a power management device for an electronic device, the electronic device comprising a touch screen, the power management device comprising a detecting unit and a control unit. The detecting unit is coupled to the touch screen for detecting whether the touch screen receives a mode switching signal request when the electronic device operates in a first power mode. The control unit is coupled to the detecting unit for operating the electronic device in a second power mode when the touch screen receives the mode switching signal request.

The invention further discloses an electronic device comprising a system circuit, a touch screen and a power management device. The system circuit is used to implement the functions of the electronic device. The touch screen is coupled to the system circuit for displaying an image generated by the system circuit. The power management device includes a detecting unit and a control unit. The detecting unit is coupled to the touch screen for detecting whether the touch screen receives a mode switching signal request when the electronic device operates in a first power mode. The control unit is coupled to the detecting unit and the system circuit for controlling the system circuit to operate the electronic device in a second power mode when the touch screen receives the mode switching signal request.

Please refer to FIG. 1 , which is a schematic diagram of an electronic device 10 according to an embodiment of the present invention. The electronic device 10 can be a personal digital assistant, a notebook computer, a mobile phone, a global positioning system, etc., and includes a system circuit 100, a touch screen 102, and a power management device 104. The system circuit 100 is used to implement the functions of the electronic device 10. The touch screen 102 is coupled to the system circuit 100 for displaying images generated by the system circuit 100. The power management device 104 includes a detecting unit 106 and a control unit 108 for managing the power supply of the electronic device 10. The detecting unit 106 is coupled to the touch screen 102 for detecting whether the touch screen 102 receives a mode switching signal request MD_SWQ when the electronic device 10 operates in a first power mode. The control unit 108 is coupled to the detecting unit 106 and the system circuit 100 for outputting a power control signal PWR_CTR to the system circuit 100 to control the system circuit 100 when the touch screen 102 receives the mode switching signal request MD_SWQ. The electronic device 10 is operated in a second power mode.

Therefore, when the electronic device 10 is operated in the first power mode, if the touch screen 102 receives the mode switching signal request MD_SWQ, the power management device 104 can control the system circuit 100 to operate the electronic device 10 Two power modes. In other words, the user can control the power mode of the electronic device 10 only through the touch screen 102, thereby saving the manufacturing cost of the power button.

It is to be noted that the touch screen 102 is not limited to any type of touch screen, and may be a resistive, capacitive or infrared touch screen, etc., for touching or pressing through a finger or an object. A slight change value of the resistor, the potential or the light source is generated on the touch panel, and then transmitted back to the power management device 104 through an interface such as RS-232 or USB to manage the system power. In addition, the first power mode and the second power mode described above may be common power modes, such as a mode of power off, power on, or hibernation.

For example, when the electronic device 10 is operated in the shutdown mode or the sleep mode, the user can touch the touch screen 102 with a finger or a stylus to generate the mode switching signal MD_SW. After the detecting unit 106 of the power management device 104 detects the mode switching signal MD_SW, the control unit 108 can generate the power control signal PWR_CTR to the system circuit 100 to switch the system circuit 100 to the power-on mode or the normal operating mode. Conversely, when the electronic device 10 is operating in the normal operation mode, the user can also switch the electronic device 10 to the sleep or shutdown mode by touching the touch screen 102. Therefore, the user can access the power management function of the electronic device 10 through the touch screen 102.

In addition, in order to ensure the correct operation of the power management device 104, when the electronic device 10 is operated in the shutdown mode, the detecting unit 106 can provide power to the touch screen 102, so that the touch screen 102 can sense the touch of the finger to generate a mode switch. The signal MD_SW is sent to the detecting unit 106.

On the other hand, the manner in which the mode switching signal MD_SW is generated is not limited to a specific operation. For example, please refer to FIG. 2 to FIG. 4 , and FIG. 2 to FIG. 4 are schematic diagrams showing different embodiments of generating the mode switching signal MD_SW. In FIG. 2, the mode switching signal MD_SW is generated in such a manner that the user touches one of the areas A of the touch screen 102. In other words, when the electronic device 10 is operating in the first power mode, if the area A of the touch screen 102 receives the user's touch signal, the detecting unit 106 can determine that the touch screen 102 has received the mode switching signal. MD_SWQ is required, and the control unit 108 performs related control.

In FIG. 3, the manner in which the mode switching signal MD_SW is generated is generated by the user continuously touching the touch screen 102 for a preset time. In other words, when the electronic device 10 is operating in the first power mode, if the touch screen 102 receives the user's touch signal for a predetermined time, the detecting unit 106 can determine that the touch screen 102 has received the mode switching signal. MD_SWQ is required, and the control unit 108 performs related control.

In FIG. 4, the manner in which the mode switching signal MD_SW is generated is generated by the user sliding on the touch screen 102 from the lower left to the upper right. In other words, when the electronic device 10 is operated in the first power mode, if the touch screen 102 receives a sliding signal in a specific direction, the detecting unit 106 can determine that the touch screen 102 has received the mode switching signal request MD_SWQ. Further, the control unit 108 performs related control.

It should be noted that the second to fourth figures are used to explain the different generation modes of the mode switching signal MD_SW. In fact, any mode switching signal MD_SW can be generated by clicking, touching, sliding, etc. It is suitable for the present invention and is not limited thereto.

On the other hand, regarding the operation mode of the power management device 104 in the electronic device 10, it can be summarized as a power management flow 50 as shown in FIG. The power management process 50 includes the following steps:

Step 500: Start.

Step 502: When the electronic device 10 is operating in the first power mode, detecting whether the touch screen 102 receives the mode switching signal request MD_SWQ.

Step 504: When the touch screen 102 receives the mode switching signal request MD_SWQ, the electronic device 10 is operated in the second power mode.

Step 506: End.

The power management process 50 is an operation mode of the power management device 104. The detailed description is as described above, and is not described herein. Therefore, when the user operates the power-off mode or the sleep mode, the user can directly manage the power of the electronic device through the touch screen.

In summary, through the present invention, the user can realize the opening, closing or power management of the electronic device through the touch screen to reduce the cost of the input device.

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

10. . . Electronic device

100. . . System circuit

102. . . Touch screen

104. . . Power management device

106. . . Detection unit

108. . . control unit

MD_SW. . . Mode switching signal

MD_SWQ. . . Mode switching signal request

PWR_CTR. . . Power control signal

50. . . Process

500, 504, 506, 508. . . step

FIG. 1 is a schematic diagram of an electronic device according to an embodiment of the present invention.

2 to 4 are schematic views of different embodiments for generating a mode switching signal in Fig. 1.

FIG. 5 is a schematic diagram of a power management process according to an embodiment of the present invention.

10. . . Electronic device

100. . . System circuit

102. . . Touch screen

104. . . Power management device

106. . . Detection unit

108. . . control unit

MD_SWQ. . . Mode switching signal request

MD_SW. . . Mode switching signal

PWR_CTR. . . Power control signal

Claims (15)

A power management method for an electronic device, the electronic device includes a touch screen, and the power management method includes: detecting whether the touch screen receives a mode switch when the electronic device operates in a shutdown mode The signal requesting, when the electronic device is operating in the shutdown mode, providing a power to the touch screen; and when the touch screen receives the mode switching signal request, operating the electronic device in a boot mode. The power management method of claim 1, further comprising: detecting whether the touch screen receives the mode switching signal request when the electronic device operates in the boot mode; and receiving the mode on the touch screen When the signal request is switched, the electronic device is operated in the shutdown mode. The power management method of claim 1, wherein detecting whether the touch screen receives the mode switching signal request when the electronic device operates in the shutdown mode is determined when the electronic device operates in the shutdown mode Whether the touch screen receives a touch signal to detect whether the touch screen receives the mode switching signal request. The power management method of claim 1, wherein detecting whether the touch screen receives the mode switching signal request when the electronic device operates in the shutdown mode is determined when the electronic device operates in the shutdown mode Whether the touch screen continues for a pre-screen The time is received to receive the touch signal to detect whether the touch screen receives the mode switching signal request. The power management method of claim 1, wherein detecting whether the touch screen receives the mode switching signal request when the electronic device operates in the shutdown mode is determined when the electronic device operates in the shutdown mode Whether the touch screen receives a sliding signal to detect whether the touch screen receives the mode switching signal request. A power management device for an electronic device, the electronic device includes a touch screen, the power management device includes: a detecting unit coupled to the touch screen for operating the electronic device in a shutdown In the mode, detecting whether the touch screen receives a mode switching signal request, and providing a power supply to the touch screen when the electronic device operates in the shutdown mode; and a control unit coupled to the detecting The unit is configured to operate the electronic device in a boot mode when the touch screen receives the mode switching signal request. The power management device of claim 6, wherein the detecting unit is further configured to detect whether the touch screen receives the mode switching signal request when the electronic device operates in the power-on mode, and the control unit uses another The electronic device is operated in the shutdown mode when the touch screen receives the mode switching signal request. The power management device of claim 6, wherein the detecting unit is attached to the electronic device When the operation mode is set to the shutdown mode, it is determined whether the touch screen receives a touch signal to detect whether the touch screen receives the mode switching signal request. The power management device of claim 6, wherein the detecting unit determines whether the touch screen receives the touch signal for a preset time when the electronic device operates in the shutdown mode to detect the Whether the touch screen receives the mode switching signal request. The power management device of claim 6, wherein the detecting unit detects whether the touch screen receives the mode switching signal request when the electronic device operates in the shutdown mode, and the electronic device operates on the electronic device In the shutdown mode, it is determined whether the touch screen receives a sliding signal to detect whether the touch screen receives the mode switching signal request. An electronic device includes: a system circuit for operating the electronic device in different operation modes; a touch screen coupled to the system circuit for displaying an image generated by the system circuit; and a The power management device includes: a detecting unit coupled to the touch screen for detecting whether the touch screen receives a mode switching signal request when the electronic device operates in a shutdown mode, and When the electronic device operates in the shutdown mode, providing a power source to the touch screen; A control unit is coupled to the detecting unit and the system circuit for controlling the system circuit to operate the electronic device in a boot mode when the touch screen receives the mode switching signal request. The electronic device of claim 11, wherein the detecting unit is further configured to detect whether the touch screen receives the mode switching signal request when the electronic device operates in the power-on mode, and the control unit is additionally used. The electronic device is operated in the shutdown mode when the touch screen receives the mode switching signal request. The electronic device of claim 11, wherein the detecting unit determines whether the touch screen receives a touch signal when the electronic device operates in the shutdown mode to detect whether the touch screen is received. This mode switches the signal request. The electronic device of claim 11, wherein the detecting unit determines whether the touch screen receives the touch signal for a preset time when the electronic device operates in the shutdown mode to detect the touch Whether the control screen receives the mode switching signal request. The electronic device of claim 11, wherein the detecting unit detects whether the touch screen receives the mode switching signal request when the electronic device operates in the shutdown mode, and the electronic device operates in the shutdown In the mode, the touch screen is determined to receive a sliding signal to detect whether the touch screen receives the mode switching signal request.