JP2006032996A - Broadcast viewing terminal device - Google Patents

Abstract

【Task】
Provided is a broadcast viewing terminal device capable of long-time broadcast viewing.
[Solution]
The broadcast viewing terminal device includes: a receiving unit that receives a broadcast signal; an extracting unit that extracts a video signal from the broadcast signal received by the receiving unit; a decoding unit that decodes the video signal extracted by the extracting unit; An output means for outputting the video signal decoded by the decoding means to a display screen; and a control means for controlling the extraction means, the decoding means and the output means, wherein the control means comprises the extraction means and A normal broadcast viewing mode in which the decoding means and the output means are operated continuously, and a low power broadcast viewing mode in which at least one of the extraction means, the decoding means and the output means is operated intermittently. It has a plurality of control modes including.
[Selection] Figure 4

Description

  The present invention relates to a broadcast viewing terminal device capable of viewing a broadcast.

  As a conventional technique related to this technical field, there is, for example, Japanese Patent Application Laid-Open No. 10-336684.

  This gazette states, “Provides a digital broadcast receiver that can restore video (video) with relatively good image quality even when the reception condition deteriorates, thereby making it possible to grasp the progress of the program. In place of the decoded data of the inter-frame predictive encoded video data that is greatly affected by the deterioration of the reception state, the decoded data of the intra-frame encoded video data that is relatively less affected by the deterioration of the reception state is used. A digital broadcast receiver is disclosed.

JP-A-10-336684

  However, in the above digital broadcast receiver, since various means such as receiving means and decoding means are always operated continuously, there is a problem that power consumption increases and broadcast viewing cannot be performed for a long time.

  An object of the present invention is to provide a broadcast viewing terminal device capable of long-time broadcast viewing.

  In order to achieve the above object, a broadcast viewing terminal device includes a receiving unit that receives a broadcast signal, an extracting unit that extracts a video signal from the broadcast signal received by the receiving unit, and a video signal extracted by the extracting unit. Decoding means for decoding, output means for outputting the video signal decoded by the decoding means to a display screen, control means for controlling the extraction means, decoding means and output means, The control means intermittently activates at least one of the normal broadcast viewing mode in which the extraction means, the decoding means, and the output means are continuously operated, and the extraction means, the decoding means, and the output means. It has a plurality of control modes including a low power broadcast viewing mode to be operated.

  According to the present invention, it is possible to provide a broadcast viewing terminal device capable of long-time broadcast viewing.

  FIG. 1 is a block diagram illustrating an example of a portable terminal with an analog broadcast viewing function.

  The broadcast processing means 12 includes a broadcast receiving means 121 such as an analog broadcast receiver that receives an analog broadcast signal, a broadcast video signal extracting means 122 such as a video signal separator that extracts a broadcast video signal from the received analog broadcast signal, and an extracted broadcast video signal. Broadcast video data decoding means 123 such as a video signal decoder that decodes broadcast video data from, broadcast audio signal extraction means 124 such as an audio signal separator that extracts a broadcast audio signal from the received broadcast signal, broadcast audio from the extracted broadcast audio signal Broadcast audio data decoding means 125 such as an audio signal decoder for decoding data.

  The mobile terminal 1 also includes various means in the terminal including display output means 13 such as a liquid crystal display for displaying and outputting the decoded broadcast video data, and control of normal broadcast viewing operation for continuously operating the broadcast processing means and the display output means. It has system control means 11 such as a microcomputer for performing control and detecting various states in the terminal.

  Further, the mobile terminal 1 includes a call voice transmission / reception unit 141 such as a call voice transceiver for transmitting / receiving a call voice signal, a received voice data decoding unit 142 such as a received voice signal decoder for decoding received voice data from the received received voice signal, Call processing means 14 having transmission voice data encoding means 143 such as a transmission voice signal encoder for encoding transmission voice data to be transmitted.

  Furthermore, the portable terminal 1 includes an audio output unit 15 such as a speaker that outputs broadcast audio data and received audio data, and an audio input unit 16 such as a microphone that inputs transmission audio data.

  Next, an example of a control flow by the system control unit 11 will be described. FIG. 2 shows an example of a broadcast viewing control flow by the system control means of the portable terminal.

  For example, when a broadcast viewing request is input from the user by operating an input key such as a broadcast playback ON / OFF key, does the system control unit 11 meet the power consumption reduction condition that requires a reduction in power consumption? Judge whether or not. When the condition is met, the low power broadcast viewing operation is controlled in which the broadcast video signal extraction unit 122 and the broadcast video data decoding unit 123 are operated intermittently for each of a plurality of frames. If the condition is not met, the normal broadcast viewing operation for continuously operating the broadcast video signal extracting unit 122 and the broadcast video data decoding unit 123 is controlled.

  Here, the power consumption reduction condition is, for example, a case where the remaining battery level of a battery (not shown) provided in the mobile terminal 1 is less than a threshold value. By switching the control according to the remaining battery level, the user can shift from the normal broadcast viewing operation to the low-power broadcast viewing operation when the remaining battery level is low, without paying attention to the remaining battery level during broadcast viewing. , Long broadcast viewing and viewing can be realized. This threshold value may be set in advance or may be arbitrarily set by the user.

  In addition, by providing a mode selector switch or displaying a setting screen for setting power consumption reduction conditions by operating function keys, it is possible to input a switching request to a power consumption reduction mode for performing low power broadcast viewing operation. When the mode is switched to the power reduction mode, the system control unit 11 determines that the power consumption reduction condition is satisfied. Some users may wish to reduce power consumption even when the remaining battery level is greater than or equal to a predetermined value, but they do not want to switch to a low-power broadcast viewing operation even when the remaining battery level is low. There is a case. Usability can be improved by arbitrarily switching based on the user's intention.

  Further, when the user has not operated a key for a predetermined time or more, it may be determined that the power consumption reduction condition is satisfied. The non-operation time during which no key operation is performed may be set in advance, or may be arbitrarily set by the user.

In addition, the mobile terminal 1 is provided with position information acquisition means (not shown) for acquiring position information indicating the position where the terminal such as GPS is present, and whether the power consumption reduction condition is met according to the area where the mobile terminal is present It may be determined whether or not. For example, it is determined that the condition is not satisfied when the user is at home or at a company where charging can be easily performed, and the condition is determined when the user is in any other place. By setting the power consumption reduction condition not to be in a predetermined area such as the charger is nearby, the user's location is not near the charger. Can be used for long-time broadcast viewing and viewing.
Note that the user may input a location that meets or does not meet the power consumption reduction condition.

  Also, the broadcast viewing time is calculated from the travel time required to move to the specified area where the charger is located from the current location and the remaining battery level. If the broadcast viewing time is shorter than the travel time, the power consumption It is determined that the reduction condition is satisfied, and the low power broadcast viewing operation is shifted from the normal broadcast viewing operation.

  In addition, when other functions such as music viewing are operating along with broadcast viewing, it is determined that the power consumption reduction condition is satisfied, and the low power broadcast viewing operation is shifted from the normal broadcast viewing operation.

  Although not shown in the figure, the system control unit 11 does not depend on whether the condition is met, but the broadcast receiving unit 121, the broadcast audio signal extracting unit 124, the broadcast audio data decoding unit 125, the display output unit 13, The audio output means 15 is operated continuously.

  An example of broadcast viewing operation by the system control means of the portable terminal will be described.

  As shown in FIG. 3, in the normal broadcast viewing operation, broadcast reception processing, broadcast video extraction processing, broadcast video data decoding processing, and display output processing are continuously operated to display and output continuous video. On the other hand, as shown in FIG. 4, in the low-power broadcast viewing operation, the broadcast reception process and the display output process operate continuously, but the broadcast video extraction process and the broadcast video data decoding process operate intermittently, Display and output continuous video.

  In both the normal broadcast viewing operation and the low-power broadcast viewing operation, the broadcast audio signal extraction process, the broadcast audio data decoding process, and the audio output process operate continuously, and continuous audio is output as audio.

  According to the present embodiment, it is determined whether or not the power consumption reduction condition is satisfied, and if so, the broadcast video extraction process and the broadcast video data decoding process are intermittently operated, so that the broadcast can be viewed. Power consumption can be reduced, and long-time broadcast viewing and viewing can be realized.

  In the embodiment described above, both the broadcast video signal extraction means and the broadcast video data decoding means are intermittently operated during the low power broadcast viewing operation. At least one of the decoding means and the display output means may be operated intermittently. Thereby, the trade-off between power consumption reduction and viewing operation can be realized. Specifically, the trade-off between power consumption reduction and viewing operation can be realized by reducing the video information when long-time viewing is desired and further reducing the video information when long-time viewing is desired.

  Also, when a function other than the broadcast viewing is operated together with the broadcast viewing, for example, when playing an answering machine or writing an email, the analog broadcast receiving means, the broadcast video signal extracting means, the broadcast video data decoding At least one of the means and the display output means may be operated intermittently.

  In the above embodiment, the case where the mobile terminal receives an analog broadcast signal has been described. However, when the analog broadcast receiving means is a digital broadcast receiving means for receiving a digital broadcast signal, the digital broadcast is viewed. Can also be applied. Further, the digital broadcast receiving means may receive a digital broadcast signal via the Internet. Further, the present invention is not limited to receiving analog or digital broadcast signals in real time, but may be applied to reproducing broadcast signals stored in a memory. In this case, power consumption can be reduced by intermittently operating at least one of the digital broadcast reproduction means, the broadcast video signal extraction means, the broadcast video data decoding means, and the display output means.

  In addition, by extracting and encoding only the intra-frame encoded signal in the intermittent viewing operation of the digital broadcast signal, power consumption can be reduced, and long-time broadcast viewing / listening can be realized. In addition, it is possible to view like a flip-flop cartoon where the display content changes intermittently. Further, by performing processing such as extraction and encoding of a digital broadcast signal for each of a plurality of frames of an intra-frame encoded signal, it is possible to further reduce power consumption and realize long-time broadcast viewing and viewing. In addition, viewing like a picture-story show in which the display content changes slowly is possible.

  In the above embodiment, the portable terminal with the broadcast receiving function has been described. However, the present invention may be applied to a stationary broadcast viewing terminal.

An example of the block diagram of the portable terminal with a broadcast viewing function is shown. An example of the broadcast viewing control flow by the system control means of the portable terminal is shown. An example of normal broadcast viewing operation by the system control means of the mobile terminal with the broadcast receiving function will be shown. An example of the low power broadcast viewing operation by the system control means of the portable terminal with the broadcast receiving function will be shown.

Claims (16)

Receiving means for receiving a broadcast signal;
Extracting means for extracting a video signal from the broadcast signal received by the receiving means;
Decoding means for decoding the video signal extracted by the extraction means;
Output means for outputting the video signal decoded by the decoding means to a display screen;
Control means for controlling the extraction means, the decoding means, and the output means,
The control means intermittently operates at least one of the normal broadcast viewing mode in which the extraction means, the decoding means, and the output means are continuously operated, and the extraction means, the decoding means, and the output means. A broadcast viewing terminal device having a plurality of control modes including a low-power broadcast viewing mode to be operated at once. Receiving means for receiving a broadcast signal;
Extracting means for extracting a video signal from the broadcast signal received by the receiving means;
Decoding means for decoding the video signal extracted by the extraction means;
Output means for outputting the video signal decoded by the decoding means to a display screen;
Control means for controlling to operate at least one of the extraction means, the decoding means, and the output means intermittently in a predetermined state;
A broadcast viewing terminal device comprising: The broadcast viewing terminal device according to claim 2 comprises an input means for inputting an instruction as to whether or not the user switches to a power consumption reduction mode for reducing power consumption of the broadcast viewing terminal device,
The broadcast viewing terminal apparatus characterized in that the predetermined state is a state where switching to a power consumption reduction mode is performed by the input means. The broadcast viewing terminal device according to claim 2 comprises an input means for a user to input an instruction to the broadcast viewing terminal device,
The broadcast viewing terminal apparatus according to claim 1, wherein the predetermined state is a state in which a time during which the input unit is not operated by a user is a predetermined time or more.   3. The broadcast viewing terminal apparatus according to claim 2, wherein the control means determines that the predetermined state is present when a function other than the broadcast viewing function is operating together with the broadcast viewing function. The broadcast viewing terminal apparatus according to claim 2, further comprising position information acquisition means for acquiring position information regarding a position where the apparatus is located,
The broadcast viewing terminal apparatus according to claim 1, wherein the predetermined state is a state in which the position information acquired by the position information acquisition unit is not included in a predetermined range. The broadcast viewing terminal apparatus according to claim 2, further comprising position information acquisition means for acquiring position information regarding a position where the apparatus is located,
The broadcast viewing terminal apparatus characterized in that the control means identifies whether or not the predetermined state is in accordance with a movement time required for movement from the position acquired by the position information acquisition means to a predetermined place. .   3. The broadcast viewing terminal apparatus according to claim 2, wherein the predetermined state of the broadcast viewing terminal apparatus is a state in which a remaining battery level of the broadcast viewing terminal apparatus is less than a predetermined value. A broadcast viewing terminal device capable of viewing broadcasts,
Analog broadcast receiving means for receiving an analog broadcast signal, broadcast video signal extracting means for extracting a broadcast video signal from the received analog broadcast signal, broadcast video data decoding means for decoding broadcast video data from the extracted broadcast video signal, Broadcast processing means having
Display output means for displaying and outputting the decoded broadcast video data;
System control means for controlling broadcast processing means and display output means,
The system control means, when the state of the broadcast viewing terminal device corresponds to a power consumption reduction condition, at least one of the broadcast video signal extraction means, the broadcast video data decoding means, and the display output means, A broadcast viewing terminal device that controls to operate intermittently by operating one frame in a plurality of frames. A broadcast viewing terminal device capable of viewing broadcasts,
Analog broadcast receiving means for receiving an analog broadcast signal, broadcast video signal extracting means for extracting a broadcast video signal from the received analog broadcast signal, broadcast video data decoding means for decoding broadcast video data from the extracted broadcast video signal, Broadcast processing means having
Display output means for displaying and outputting the decoded broadcast video data;
System control means for controlling broadcast processing means and display output means,
When the system control means performs an operation other than the broadcast viewing operation and the broadcast viewing operation, and the state of the broadcast viewing terminal apparatus corresponds to a power consumption reduction condition, the broadcast video signal extraction means, the broadcast video data decoding means A broadcast viewing terminal apparatus, wherein at least one of the display output means is controlled to operate intermittently by operating one frame on a plurality of frames. A broadcast viewing terminal device capable of viewing broadcasts,
Digital broadcast receiving means for receiving a digital broadcast signal; broadcast video signal extracting means for extracting a broadcast video signal from the received digital broadcast signal; broadcast video data decoding means for decoding broadcast video data from the extracted broadcast video signal; Broadcast processing means having
Display output means for displaying and outputting the decoded broadcast video data;
Low-power broadcasting that intermittently operates at least one of the broadcast video signal extraction means, the broadcast video data decoding means, and the display output means when the state of the broadcast viewing terminal device corresponds to a power consumption reduction condition A system control means for performing a viewing operation and controlling the broadcast processing means and the display output means to perform a normal broadcast viewing operation when the condition is not met,
A broadcast viewing terminal device comprising:   12. The broadcast viewing terminal apparatus according to claim 11, wherein the digital broadcast receiving means receives a digital broadcast signal via the Internet. A broadcast viewing terminal device capable of viewing broadcasts,
Storage means for storing digital broadcast signals;
Digital broadcast reproduction means for reproducing the stored digital broadcast signal, broadcast video signal extraction means for extracting the broadcast video signal from the reproduced digital broadcast signal, and broadcast video data decoding means for decoding the broadcast video data from the extracted broadcast video signal And broadcast processing means comprising:
Display output means for displaying and outputting the decoded broadcast video data;
When the state of the broadcast viewing terminal device corresponds to a power consumption reduction condition, at least one of the digital broadcast reproduction means, the broadcast video signal extraction means, the broadcast video data decoding means, and the display output means is intermittently provided. System control means for performing a low-power broadcast viewing operation to be operated, and when not satisfying the condition, control to perform a normal broadcast viewing operation for continuously operating the broadcast processing means and the display output means,
A broadcast viewing terminal apparatus comprising:   The broadcast viewing terminal device according to any one of claims 9 to 13, wherein the power consumption reduction condition is that the battery level of the terminal device is less than a predetermined value, and the user sets broadcast viewing power consumption reduction. The non-operation elapsed time in which no key operation is performed by the user is longer than a predetermined value, the terminal device is not located in the predetermined area, the viewable time for viewing the broadcast is based on the estimated movement time to the predetermined area A broadcast viewing terminal device comprising at least one of short operations for listening to sounds other than broadcast.   14. The broadcast viewing terminal apparatus according to claim 11, wherein the broadcast video signal extraction means and the broadcast video data decoding that are operated intermittently when the power consumption reduction condition is satisfied. At least one of the means and the display output means operates when processing an intra-frame encoded signal of a digital broadcast signal. 14. The broadcast viewing terminal apparatus according to claim 11, wherein the broadcast video signal extraction means and the broadcast video data decoding that are operated intermittently when the power consumption reduction condition is satisfied. At least one of the means and the display output means operates on a frame-by-frame basis for a plurality of frames of an intra-frame encoded signal of a digital broadcast signal.

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