JP4623615B2 - TV broadcast receiving apparatus and control method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention, TThe present invention relates to a V broadcast receiving apparatus and a control method thereof.
[0002]
[Prior art]
Conventionally, in a personal computer or the like, power saving is realized by automatically shifting to a standby state (sleep mode) when there is no operation for a certain period of time. Recently, a device that is equipped with a power-saving infrared sensor, detects whether there is a person in front of the device, shifts to a sleep mode, or performs on / off control has been commercialized.
[0003]
Japanese Patent Application Laid-Open No. 7-235383 discloses a “personal electric device” that detects whether or not a person is present in front of a device in general devices as well as a personal computer, and controls power ON / OFF. An “automatic ON / OFF device” is disclosed.
[0004]
Japanese Patent Application Laid-Open No. 62-2755 discloses a “periodic power-off device for a terminal device in a CATV system” that performs ON / OFF control of each terminal from a center in a device having a network such as CATV. Has been.
[0005]
[Problems to be solved by the invention]
However, in the “automatic ON / OFF device for personal electrical equipment” disclosed in Japanese Patent Laid-Open No. 7-235383, the power supply of the device to be controlled is simply ON / OFF controlled. Even when the control target is selected, the power on / off control is merely performed. However, such a simple ON / OFF control is not sufficient in the TV broadcast receiving apparatus. There was room for improvement.
[0006]
For example, if you have left your seat for a long time, the program you have been watching may have ended, and it is not always desirable to be in the state you were watching before when you resume watching again. . In this case, since it is necessary for the user to newly select a channel, it is desirable that the screen display allows easy channel selection.
[0007]
In addition, since the TV broadcast receiving apparatus is often used while performing other work, when the power on / off control is performed using the above-mentioned “automatic ON / OFF apparatus for personal electrical equipment”, the power of the TV broadcast receiving apparatus is frequently used. Repeated on / off may interfere with comfortable viewing. In other words, since the “automatic ON / OFF device for personal electrical equipment” determines only whether there is a person in front of the equipment, the power is turned off even if a little seat is removed. When applied to a broadcast receiving apparatus, it may be an obstacle to continuous viewing.
[0008]
In addition, in the “periodic power-off device of terminal device in CATV system” of the above-mentioned Japanese Patent Application Laid-Open No. 62-2755, the TV broadcast receiving device is regarded as one terminal device, and power control is performed intensively. The present invention is applied to a device using a network such as CATV and is not suitable for power saving control of a general home TV broadcast receiving apparatus.
[0009]
  The present invention has been made paying attention to the above points,The user is watching when the program of the channel that the user is watching has finished and switched to the next program, or when the program of the channel that the user is watching is not finished but the user is not within the predetermined range. Easily understand programs on channels other thanAn object of the present invention is to provide a TV broadcast receiving apparatus and a control method thereof.
[0010]
[Means for Solving the Problems]
  In order to achieve the above object, a TV broadcast receiving apparatus according to claim 1 is a TV broadcast receiving apparatus, wherein a first detection means for detecting whether or not a person is within a predetermined detection range, and a broadcast video Was displayed on the displayOf the first channelWhen the program ends,1st channelTurn ofPairA second detection means for detecting the switching,When the first detection means detects that a person is within the predetermined range, and the second detection means detects a change in the program of the first channel;The first detection means detects that no person is within the predetermined range.AndAnd by the second detection meansOf the first channelNumberPair ofSwitching is detectedWhen there is not, the video of the program of the first channel and the video of the program of a predetermined channel different from the first channel are displayed on the display unit.Control means for controlling.
[0028]
  In order to achieve the above object, the claims6The TV broadcast receiving apparatus control method described in 1 is a TV broadcast receiving apparatus control method in which a first detection step for detecting whether or not a person is within a predetermined detection range and a display for displaying a broadcast video are provided. It was displayed in the departmentOf the first channelWhen the program ends,1st channelTurn ofPairA second detection step for detecting the switching,When the first detection step detects that a person is within the predetermined range, and the second detection step detects a change in the program of the first channel;It is detected by the first detection step that there is no person within the predetermined range.AndAnd by the second detection stepOf the first channelNumberPair ofSwitching is detectedWhen there is not, the video of the program of the first channel and the video of the program of a predetermined channel different from the first channel are displayed on the display unit.And a control step for controlling.
[0064]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0065]
(First embodiment)
FIG. 1 is a block diagram showing a schematic configuration of a TV broadcast receiving apparatus according to the first embodiment of the present invention.
[0066]
In the figure, the TV broadcast receiving apparatus according to the present embodiment includes a sensor 1, a light receiving unit 2, a remote controller 3, a CPU 4, a power control device 5, a display control device 6, a display device 7, and a first device. Tuner 8, a second tuner 9, a program information acquisition unit 10, and a memory 11.
[0067]
The remote control 3 accepts various inputs by user operations.
[0068]
An infrared signal emitted from the remote controller 3 is received by the light receiving unit 2 and supplied to the CPU 4.
[0069]
The CPU 4 performs channel switching, volume adjustment, various setting value changes, and the like in accordance with user instructions.
[0070]
The sensor 1 detects whether there is a viewer in front of this apparatus.
[0071]
2 and 3 are diagrams showing specific examples of the sensor 1.
[0072]
In FIG. 2, the sensor 1 a is a power-saving infrared sensor, and is attached to the front surface of the display device 7, for example. The infrared sensor 1a detects a human body having a body temperature within the detection range, and the sensor 1a can detect whether or not there is a person in front of the display device 7.
[0073]
In FIG. 3, the sensor 1b is a sheet-like pressure sensor. When a person gets on the seat, the sensor 1b detects the human body, and the detection signal is transmitted to the CPU 4.
[0074]
Control operations executed by the TV broadcast receiving apparatus configured as described above will be described separately for the case where there is a viewer in front of this apparatus and the case where there is no viewer.
[0075]
First, a case where there is a viewer will be described.
[0076]
The first tuner 8 extracts program information from the program being received and transmits the program information to the program information acquisition unit 10. The program information acquisition unit 10 temporarily stores the program information in the memory 11. Further, the program information acquisition unit 10 compares the program information extracted from time to time with the information stored in the memory 11, and if the result is different, that is, the program that has been viewed up to now is terminated and the next program is reached. When switching, the CPU 4 is notified of the “program switching” information.
[0077]
When the CPU 4 receives the information that “the program has been switched”, the CPU 4 outputs a command for causing the display control device 6 to display a multi-screen as shown in FIG. 4 on the display device 7, for example.
[0078]
FIG. 4 is a diagram showing a display example when, for example, nine screens are displayed on the display device 7 as a multi-screen display.
[0079]
In the figure, the center screen is a screen of a channel that has been viewed by the viewer so far, and is an image received by the first tuner 8. This screen is displayed with a thick frame to distinguish it from other screens.
[0080]
On the other hand, the other screens around the image are images received by the second tuner 9, and channels other than the channel received by the first tuner 8 are sequentially scanned and displayed. For this reason, a screen that is moving in real time is displayed on the central screen, but the screen that is moving every few seconds is switched sequentially for other screens.
[0081]
This multi-screen display allows the viewer to know what program is being broadcast on a channel other than the channel that has been viewed. Further, when the multi-screen is displayed, the viewer can easily select another channel by performing a key operation from the remote controller 3.
[0082]
FIG. 5 is a diagram illustrating an example of the appearance of the remote controller 3.
[0083]
In the figure, the remote controller 3 includes a light emitting unit 31, a numeric keypad 32, an up / down key 33, and a cursor key 34.
[0084]
The numeric keypad 32 is used for direct channel selection and numeric input.
[0085]
The up / down key 33 is used for volume adjustment, channel tuning, or various user settings.
[0086]
The cursor keys 34 are used for various user settings and menu selections. It is also used for channel selection during the multi-screen display.
[0087]
This multi-screen display is switched to the full-screen display of the channel received by the first tuner 8 after a few seconds if there is no key input by the user. It is assumed that the time until switching at this time can be set in advance by the user.
[0088]
In the meantime, if there is a channel operation of the user by the cursor key 34, the channel received by the first tuner 8 also changes according to the operation. That is, the real-time display screen with the center frame of the multi-screen display in FIG. 4 is sequentially switched. If there is no next input as it is, after a few seconds, the screen is switched to the full screen display of the center screen.
[0089]
In addition, when a channel operation is performed with the numeric keypad 32 or the up / down key 33 during multi-screen display, when an input is received, the display is immediately switched to the full-screen display for that channel.
[0090]
The above is the control operation when the sensor 1 detects “there is a viewer”.
[0091]
Next, control when the sensor 1 detects “no viewer” will be described.
[0092]
When there is no viewer in front of the TV broadcast receiving apparatus, the sensor 1 transmits information indicating “no viewer” to the CPU 4.
[0093]
The CPU 4 outputs a command to the display control device 6 and switches the display on the display device 7 to a multi-screen display as shown in FIG. It is assumed that display switching at this time can be set in advance by the user.
[0094]
In this state, when the sensor 1 detects that the viewer has returned, it transmits information “there is a viewer” to the CPU 4, and the CPU 4 outputs a command to the display control device 6, and immediately until now. Return to the display state that the viewer was watching.
[0095]
If the viewer does not return, the CPU 4 retains the information “no viewer”, and when the information “program has been switched” is output from the program information acquisition unit 10, this time. Outputs a command to the power supply control device 5 to turn off the sub power supply (minimum energization state in which the remote controller 3 and the sensor 1 can receive signals).
[0096]
When the viewer returns when the sub power supply is in the off state, the sensor 1 transmits information “there is a viewer” to the CPU 4, and the CPU 4 issues a command to the power supply control device 5 and immediately outputs the sub power supply. Turn on the.
[0097]
The display on the display device 7 at this time is a multi-screen display as shown in FIG. 4, and the viewer can select a channel while viewing this screen.
[0098]
If there is no input for a predetermined time set in advance by the user, the display is automatically switched to the full screen display of the central screen received by the first tuner 8.
[0099]
FIG. 6 is a table summarizing changes in the control state executed by the TV broadcast receiving apparatus of the present embodiment.
[0100]
As shown in the figure, the present apparatus monitors two conditions, “there is / no viewer” and “the program is switched / not switched”, and the display screen of the display device 7 is changed depending on the condition. ing.
[0101]
Although not shown in FIG. 6, when the sub power supply returns from the off state, the multi-screen display is once displayed. If there is no input, the display returns to the normal display after a few seconds, and input other than the cursor key 34 is made. If there is, it returns to the normal screen immediately.
[0102]
Further, in the present embodiment, two conditions, “there is / no viewer” and “the program is switched / not switched” are monitored, and the display screen of the display device 7 is changed depending on the condition. However, the present invention is not limited to this, and only one condition “with / without viewers” may be monitored, and the display screen of the display device 7 may be changed according to the condition. That is, when there are no viewers, the display may be immediately switched to the multi-screen display regardless of whether the program is switched.
[0103]
(Second Embodiment)
FIG. 7 is a block diagram showing a schematic configuration of a TV broadcast receiving apparatus according to the second embodiment of the present invention.
[0104]
As shown in the figure, the TV broadcast receiving apparatus of the present embodiment is different from the TV broadcast receiving apparatus of the first embodiment shown in FIG. The only difference is that it is provided. Therefore, in FIG. 7, the same components as those in FIG.
[0105]
The basic control operation executed by the TV broadcast receiving apparatus of the present embodiment is the same as that of the TV broadcast receiving apparatus of the first embodiment.
[0106]
In the present embodiment, external image input is used instead of the multi-screen display in the first embodiment. However, the display is not changed when “the viewer is present” and “the program is switched”.
[0107]
In the present embodiment, when “there is no viewer” and “the program is switched”, the external image input from the external image input device 21 is temporarily switched.
[0108]
By switching to this screen, power saving is achieved, and information other than TV broadcasting is provided to the viewer before the viewer resumes viewing.
[0109]
For example, an interphone screen is used as the external image.
[0110]
In this case, it is assumed that the contents of the intercom screen can be roughly understood without full screen display, and the size of the display screen can be set according to the user's preference.
[0111]
Further, since it is not necessary to rewrite the screen at any time like a normal TV broadcast screen, it is possible to display at a reduced frame rate.
[0112]
Furthermore, by moving the display frame, it is possible to help prevent the display device 7 from being burned.
[0113]
FIG. 8 is a diagram illustrating an example of a system configuration to which the TV broadcast receiving device of the present embodiment is applied and an example of an intercom screen displayed on the display device 7.
[0114]
In this figure, this system is composed of a TV broadcast receiving apparatus (the display apparatus 7 which is the appearance thereof) of the present embodiment and an interphone camera 101.
[0115]
In the figure, an intercom screen 7a is displayed on the display device 7, and the front door 102 and visitors are also shown.
[0116]
When the TV broadcast receiving apparatus according to the present embodiment enters the power saving mode, an image transmitted from the interphone camera 101 is displayed as the interphone screen 7a. At this time, if there is a visitor 103 in front of the door 102, the visitor 103 is displayed on the intercom screen 7a.
[0117]
In the present embodiment, an example of an intercom screen is shown. However, the present invention is not limited to this, and the installation location of the camera may be another room or a garden.
[0118]
In this embodiment, when the “no viewers” and “the program is switched”, the external image is switched. However, this is not the only case, and the program has been switched. Regardless of the case, in the case of “there is no viewer”, switching to an external image may be performed.
[0119]
(Third embodiment)
FIG. 9 is a block diagram showing a schematic configuration of a TV broadcast receiving apparatus according to the third embodiment of the present invention. In the figure, the same components as those in FIG. 1 are denoted by the same reference numerals.
[0120]
In the figure, the TV broadcast receiving apparatus according to the present embodiment includes a sensor 1, a light receiving unit 2, a remote controller 3, a CPU 4, a timer 22, a brightness adjusting device 23, a display device 7, and a power control device. 5.
[0121]
In a state where the viewer is watching TV, the light receiving unit 2 receives the command and transmits it to the CPU 4 by the operation of the viewer's remote control 3.
[0122]
As a result, operations such as channel switching and a sub power-off state (minimum energization state in which an instruction from the remote controller can be received instead of an AC power source) can be performed. The on / off operation of the sub power supply at this time is performed by the power supply control device 5 according to a command from the CPU 4.
[0123]
The sensor 1 detects the movement of the viewer and notifies the CPU 4 whether or not there is a person in front of the TV broadcast receiving apparatus.
[0124]
When the viewer is gone, the CPU 4 outputs a signal to the timer 22 to start the time counting by the timer 22. Thereafter, the timer 22 counts the elapsed time until the information that the viewer has returned is supplied from the sensor 1. When the viewer returns, the timer 22 is reset at that time.
[0125]
If the viewer does not return, the CPU 4 continues to monitor the timer 22 and outputs a signal to the brightness adjusting device 23 when the time set in advance by the user has elapsed to save the display device 7. Perform power control.
[0126]
The time set by the user at this time can be set in several stages, and different power saving control states can be set for each set time.
[0127]
FIG. 10 shows a state in which the display screen displayed on the display device 7 is changed by the power saving control executed by the TV broadcast receiving apparatus of the present embodiment.
[0128]
As shown in the figure, the screen is slightly darkened in the first stage from the first normal display screen, and further darkened in the second stage.
[0129]
When the power saving control command is output from the CPU 4 to the brightness adjusting device 23, the brightness adjusting device 23 adjusts the display brightness of the display device 7.
[0130]
At this time, as shown in FIG. 10, it is configured so that several steps can be set.
[0131]
FIG. 11 is a flowchart showing the procedure of the power saving control process executed by the TV broadcast receiving apparatus of the present embodiment.
[0132]
In this power saving control process, the control process in the case where the screen is darkened in the first stage and the display is turned off in the second stage is shown.
[0133]
In the figure, when the viewer first leaves the seat and the sensor 1 detects that there is no viewer in front of the TV broadcast receiving apparatus of the present embodiment, the timer 22 starts measuring time according to a command from the CPU 4. (Step S1).
[0134]
If the viewer returns before the first preset time p preset by the user has elapsed, the timer 22 is reset. At this time, the display on the display device 7 does not change anything (steps S2 → S8).
[0135]
If the first set time p set in advance by the user has elapsed and the viewer has not returned, the brightness adjusting device 23 is displayed on the display device 7 by a command output from the CPU 4. Is reduced (step S2 → S3).
[0136]
Next, if the viewer returns before the second preset time q minutes preset by the user has elapsed, the timer 22 is reset. At this time, the display on the display device 7 is returned to the original state (steps S2 → S8).
[0137]
If the second set time q set in advance by the user has elapsed and the viewer has not returned, the brightness adjusting device 23 is set in the display device 7 according to the command output from the CPU 4. Reduce the brightness further. In the illustrated example, since the brightness is set to “0” by the user in advance, the display device 7 becomes completely dark and does not display anything (steps S4 → S5). As the device, the driver of the display device 7 is still operating, so that the display can be resumed immediately. However, when viewed from the user, the display disappears and only the sound can be heard.
[0138]
At this time, it is assumed that q> p.
[0139]
Next, if the viewer returns before the third set time r set in advance by the user has elapsed, the timer 22 is reset. At this time, the display on the display device is returned to the original state (steps S2 → S8).
[0140]
If the third set time r set in advance by the user has elapsed and the viewer has not returned, the power supply control device 5 turns off the sub power supply of the system according to a command output from the CPU 4 Put it in a state. Thereby, the operation and sound of the driver of the display device 7 are also stopped.
[0141]
At this time, it is assumed that r> q.
[0142]
(Fourth embodiment)
FIG. 12 is a block diagram showing a schematic configuration of a TV broadcast receiving apparatus according to the fourth embodiment of the present invention.
[0143]
As shown in the figure, the TV broadcast receiving apparatus of the present embodiment is different from the TV broadcast receiving apparatus of the third embodiment of FIG. The only difference is that it is provided. Therefore, in FIG. 12, the same components as those in FIG. 9 are denoted by the same reference numerals, and the description thereof is omitted.
[0144]
In the figure, the CPU 4 outputs a signal to the timer 22 to start the timer 22 when there are no viewers. Thereafter, the timer 22 counts the elapsed time until information indicating that the viewer has returned is transmitted from the sensor 22. When the viewer returns, the timer 22 is reset at that time.
[0145]
If the viewer does not return, the CPU 4 continues to monitor the timer 22 and outputs a signal to the frame rate conversion device 24 and saves power for the display device 7 when the time preset by the user has elapsed. Take control.
[0146]
The time set by the user at this time can be set in several stages, and different power saving control states can be set for each set time.
[0147]
FIG. 13 is a diagram for explaining a power saving control process executed by the TV broadcast receiving apparatus according to the present embodiment.
[0148]
In the figure, the screen in the left column represents a normal screen, and the screen in the right column represents a screen when the frame rate is lowered. In the illustrated example, a case where the frame rate is reduced to ½ is shown. On the normal screen, after the first frame is written, it is rewritten to the image of the second frame. However, when the frame rate is lowered, the first frame is displayed again after the first frame. That is, the rewriting process between the first frame and the second frame is omitted, and the second frame is skipped. Similarly, by omitting the fourth, sixth,... Frames, the power required for the rewriting process can be suppressed.
[0149]
(Other embodiments)
The present invention is not limited to the above embodiments, and can be implemented in various modified states. For example, it can be changed as follows.
[0150]
(1) Multi-screen display displayed on the display device when there is no viewer by combining the TV broadcast receiving device of the first embodiment and the TV broadcast receiving device of the third embodiment The TV broadcast receiving apparatus can be configured so that the brightness of the TV is changed according to the time the viewer is away from the seat.
[0151]
(2) By combining the TV broadcast receiver of the first embodiment and the TV broadcast receiver of the fourth embodiment, a multi-screen display displayed on the display device when there is no viewer The TV broadcast receiver can be configured to change the display rate according to the time the viewer is away from the seat.
[0152]
(3) By combining the TV broadcast receiving apparatus of the second embodiment and the TV broadcast receiving apparatus of the third embodiment, a part of the display screen of the display device can be displayed when there is no viewer. It is possible to configure a TV broadcast receiving apparatus in which the brightness of the displayed external image is changed according to the time when the viewer is away from the seat.
[0153]
(4) By combining the TV broadcast receiving device of the second embodiment and the fourth TV broadcast receiving device, an external device displayed on a part of the display screen of the display device when there is no viewer It is possible to configure a TV broadcast receiving apparatus in which the image display rate is changed according to the time when the viewer is away from the seat.
[0154]
(5) Brightness of the display screen of the display device when the mode is shifted to the power saving mode by combining the TV broadcast receiving device of the third embodiment and the TV broadcast receiving device of the fourth embodiment. Thus, a TV broadcast receiving apparatus can be configured in which the display rate and the display rate are changed according to the time when the viewer is away from the seat.
[0155]
(6) By combining the TV broadcast receiving apparatus of the first embodiment and the TV broadcast receiving apparatus of (5) above, a display is made on the display device when the program is not switched and there is no viewer. It is possible to configure a TV broadcast receiving apparatus in which the brightness and display rate of the displayed multi-screen are changed according to the time that the viewer is away from the seat.
[0156]
(7) By combining the TV broadcast receiver of the second embodiment and the TV broadcast receiver of (5) above, the display screen of the display device when the program is switched and there is no viewer It is possible to configure a TV broadcast receiving apparatus in which the brightness and display rate of an external image displayed on a part of the TV image are changed according to the time when the viewer is away from the seat.
[0157]
A storage medium storing software program codes for realizing the functions of the above-described embodiments is supplied to the system or apparatus, and the computer (or CPU or MPU) of the system or apparatus is stored in the storage medium. It goes without saying that the object of the present invention can also be achieved by reading and executing the program code.
[0158]
In this case, the program code itself read from the storage medium realizes the novel function of the present invention, and the storage medium storing the program code constitutes the present invention.
[0159]
As a storage medium for supplying the program code, for example, a floppy disk, a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a CD-R, a magnetic tape, a nonvolatile memory card, a ROM, or the like can be used. Further, the program code may be supplied from a server computer via a communication network.
[0160]
Further, by executing the program code read out by the computer, not only the functions of the above-described embodiments are realized, but the OS running on the computer based on the instruction of the program code is actually used. Needless to say, the present invention includes a case where part or all of the processing is performed and the functions of the above-described embodiments are realized by the processing.
[0161]
Further, after the program code read from the storage medium is written into a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, the function expansion is performed based on the instruction of the program code. It goes without saying that the CPU or the like provided in the board or the function expansion unit performs part or all of the actual processing, and the functions of the above-described embodiments are realized by the processing.
[0162]
【The invention's effect】
  As explained above, according to the present invention,The user is watching when the program of the channel that the user is watching has finished and switched to the next program, or when the program of the channel that the user is watching is not finished but the user is not within the predetermined range. By displaying the video of the program of the channel different from the channel that the user was watching together with the program of the channel that was viewed, the program of the channel other than the channel that the user was viewing can be easily grasped.
[0164]
Furthermore, efficient power control can be performed without hindering comfortable TV broadcast viewing.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a schematic configuration of a TV broadcast receiving apparatus according to a first embodiment of the present invention.
FIG. 2 is a diagram showing a specific example of the sensor of FIG.
FIG. 3 is a diagram showing another specific example of the sensor of FIG. 1;
4 is a diagram showing an example of a multi-screen display displayed on the display device of FIG. 1. FIG.
FIG. 5 is a diagram illustrating an example of the appearance of a remote controller.
6 is a diagram summarizing changes in control state executed by the TV broadcast receiving apparatus of FIG. 1; FIG.
FIG. 7 is a block diagram showing a schematic configuration of a TV broadcast receiving apparatus according to a second embodiment of the present invention.
8 is a diagram showing an example of a system configuration to which the TV broadcast receiving device of FIG. 7 is applied and an example of a display displayed on the display device.
FIG. 9 is a block diagram showing a schematic configuration of a TV broadcast receiving apparatus according to a third embodiment of the present invention.
10 is a diagram showing a state in which a display screen displayed on the display device transitions by power saving control executed by the TV broadcast receiving device of FIG. 9. FIG.
11 is a flowchart showing a procedure of power saving control processing executed by the TV broadcast receiving apparatus of FIG. 9;
FIG. 12 is a block diagram showing a schematic configuration of a TV broadcast receiving apparatus according to a fourth embodiment of the present invention.
13 is a diagram for explaining a power saving control process executed by the TV broadcast receiving apparatus of FIG. 12;
[Explanation of symbols]
1,1a, 1b sensor
2 Light receiver
3 Remote control
31 Light emitting part
32 numeric keypad
33 Up / Down key
34 Cursor keys
4 CPU
5 Power supply control device
6 Display controller
7 Display device
7a Intercom screen
8 First tuner
9 Second tuner
10 Program information acquisition unit
11 memory
21 External image input device
22 Timer
23 Brightness adjustment device
24 frame rate converter
101 Intercom camera
102 Door
103 Visitors

Claims (6)

A TV broadcast receiver,
First detection means for detecting whether or not there is a person within a predetermined detection range;
Exit first channel of a program that has been displayed on the display unit for displaying the broadcast image is a second detecting means for detecting that the turn sets the first channel is switched,
A case in which it is detected by the first detection means that a person is within the predetermined range, and a change in the program of the first channel is detected by the second detection means; and the first detection means It said that no person is within a predetermined range is detected, and in the case where switching turn sets the first channel is not detected by said second detection means, image and of the first channel of a program by Control means for controlling to display a video of a program of a predetermined channel different from the first channel on the display unit;
A TV broadcast receiver characterized by comprising: The predetermined channel includes a plurality of channels different from the first channel,
  The control means controls to display the video obtained by sequentially scanning the plurality of channels on the display unit.
The TV broadcast receiver according to claim 1. After the video of the first channel program and the video of a predetermined channel different from the first channel are displayed on the display unit, there is no person within the predetermined range by the first detection means. 3. The TV broadcast according to claim 1, wherein the control means performs control so as to reduce and display a luminance of an image displayed on the display unit after a predetermined time has elapsed. Receiver device. After the video of the first channel program and the video of a predetermined channel different from the first channel are displayed on the display unit, there is no person within the predetermined range by the first detection means. The control means controls the display so that the frame rate of the video displayed on the display unit is lowered after a predetermined time has elapsed as compared with the normal display. 4. The TV broadcast receiver according to any one of 3 above. After the video of the first channel program and the video of the program of a predetermined channel different from the first channel are displayed on the display unit, after a predetermined time has elapsed, the control means The TV broadcast receiving apparatus according to claim 1, wherein only the video is controlled to be displayed on the display unit. A method for controlling a TV broadcast receiving apparatus, comprising:
A first detection step of detecting whether or not a person is within a predetermined detection range;
Exit first channel of a program that has been displayed on the display unit for displaying the broadcast image is a second detection step of detecting that a turn sets the first channel is switched,
When the first detection step detects that a person is within the predetermined range, and the second detection step detects a change in the program of the first channel, and the first detection step said that no person is within a predetermined range is detected, and in the case where the second detection step by switching turn sets the first channel is not detected, the video and the first channel of a program by A control step for controlling the display unit to display a video of a predetermined channel different from the first channel ;
A control method for a TV broadcast receiving apparatus, comprising:

Images