JP2008227718A - Television receiver - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a television receiver which does not deteriorate usability and can be automatically switched off by detecting that a user forgets to switch off even when a sleep function is enabled. <P>SOLUTION: A control section 2 determines whether or not input operation is performed within a prescribed time. Then, unless the input operation is performed within the prescribed time, the control section 2 OSD-displays on a display part 32 a message showing that a power source of a device main body is switched off when there is no input operation. Thus, a user is notified that the power source of the device main body is switched off when there is no input operation. When the user continues to watch a current television program, the user who sees the display as shown in Fig. 3 performs some input operation (increasing the volume or the like). On the contrary, when the user is asleep, when he or she is absent, or when the power source of the device main body can be switched off, the user does not perform input operation. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a television receiver having a sleep function that detects that a device is forgotten to be turned off and automatically turns off the power.

2. Description of the Related Art Conventionally, in television receivers, the user is left to control the power supply circuit, such as turning on the power when the user is in use and turning off the power when not in use. Therefore, there is a problem that power consumption is wasted if the user leaves the seat while the power is on and forgets that the power is on even though the device is not used.
Therefore, conventionally, a television receiver having a sleep function for detecting that the device has been forgotten to be turned off and automatically turning off the power has been adopted.

When this sleep function is enabled, even if the user leaves the desk while the power is turned on without using the device and forgets that the power is on, a predetermined time period is set. After the elapse of time, the power is automatically turned off. With this sleep function, a conventional television receiver having the sleep function has saved power consumption.
On the other hand, in Patent Document 1, an electronic device is proposed.
JP-A-9-319471

However, once the sleep function is enabled, the power is always automatically turned off after a predetermined time has elapsed. Therefore, even if the sleep function is enabled once and the user wants to continue watching the TV program that is currently being watched, the power is forcibly turned off with the conventional TV receiver. . Also, in order to prevent the power from being forcibly turned off, a setting change operation for disabling the sleep function has to be performed.
Therefore, a television receiver having a sleep function has a problem that user usability is poor. For this reason, in the conventional television receiver, the usage rate of the sleep function was low.

  The present invention is intended to solve such a conventional problem, and even if the sleep function is enabled, it does not impair usability and can automatically turn off the power by detecting that the device is forgotten to be turned off. An object of the present invention is to provide a television receiver that can be used.

  The television receiver of the present invention has the following configuration in order to solve the above problems.

(1) An operation means provided with a plurality of keys and outputting an operation signal corresponding to the operated key;
Detection means for detecting the operation signal output from the operation means;
In a television receiver provided with power supply means for supplying current to each part of the apparatus body when the power is turned on,
Display that displays a message to turn off the power of the apparatus body when there is no input operation when the operation signal is not newly detected within a predetermined time from the previous detection of the operation signal in the detection means Means, and
The power source means
If the operation signal is not detected by the detection means within a predetermined time shorter than the predetermined time from the display of the message, the supply of the current is stopped and the power of the apparatus main body is turned off.
When the operation signal is detected by the detection means within the predetermined time from the display of the message, the supply of the current is continued.

In this configuration, the television receiver has a sleep function that detects that the device is forgotten to be turned off and automatically turns off the power. The fixed time is a preset time, and is, for example, 10 minutes, 15 minutes, 30 minutes, or 60 minutes. The predetermined time is, for example, 30 seconds.
In this configuration, in order to prevent the power consumption from being wasted when the user leaves the seat while the power is on and forgets that the power is on even though the device is not used, This assumes a scene where the sleep function is enabled.
As long as the sleep function is valid, the display means always confirms whether or not an operation signal is newly detected within a predetermined time since the operation signal was previously detected by the detection means. And a display means displays said message, when an operation signal is not newly detected within a fixed time since the operation signal was detected in the detection means last time. When the user wants to continue watching the currently viewed television program, the user who has seen the above message performs some input operation (such as increasing the volume). Conversely, the user does not perform an input operation when the user is asleep, when the user is away, or when the power of the apparatus main body may be turned off.
Then, when the operation signal is not detected by the detection means within a predetermined time, the power supply means stops supplying the current and turns off the power of the apparatus main body. Conversely, if the user performs some input operation, the power supply means continues to supply current.
As described above, even when the sleep function is enabled once and the user wants to continue watching the TV program that is currently being watched, the TV receiver is forced to perform some input operation. The power will not be turned off. That is, even if the sleep function is enabled, usability is not impaired, and it is possible to automatically turn off the power by detecting forgetting to turn off the television receiver. For this reason, the usage rate of the sleep function can also be improved.

(2) Receiving means for receiving a television broadcast signal transmitted from a broadcasting station and an electronic program guide indicating a broadcast end time of a television program broadcast on each channel of the television broadcast signal;
The display means includes
When the operation signal is not newly detected within the predetermined time since the operation signal was detected last time in the detection means, the electronic program guide is referred to and broadcast on the currently selected channel. Wait for the TV program to finish broadcasting,
After the broadcast of the television program ends, the message is displayed.

Here, there is a high possibility that the user wants to continue watching the TV program broadcast on the currently selected channel. Therefore, the display means waits until the broadcast of the TV program broadcast on the currently selected channel is finished, and displays the message after the broadcast is finished. At this time, if the power of the apparatus main body may be turned off, the user does not perform an input operation. Then, after a predetermined time has elapsed, the power of the apparatus is turned off by the power supply means.
As described above, when the user wants to continue watching the TV program broadcast on the currently selected channel, the user does not have to perform any input operation. Therefore, even if the sleep function is enabled, usability is not further impaired, and it is possible to automatically turn off the power by detecting forgetting to turn off the device. For this reason, the usage rate of the sleep function can be further improved.

(3) The display means includes
If broadcasting of all TV programs broadcasted on the currently selected channel ends within the predetermined time, whether any of all TV programs broadcasted on other channels are currently being broadcast Judgment based on the electronic program guide,
If all the TV programs are not broadcast, the message is displayed.

Here, when the broadcasting of all TV programs ends, such as at midnight, when the apparatus is turned on, it is highly likely that the user has forgotten to turn off the power at bedtime or the like. Therefore, when the broadcasting of all the TV programs is completed, the display means displays the message even if the predetermined time has not elapsed. Then, after a predetermined time has elapsed, the power of the apparatus is turned off by the power supply means.
As described above, when all TV programs are not broadcast, the power can be quickly and automatically turned off. Therefore, it is possible to further save power consumption.

  According to the present invention, even if the sleep function is enabled, usability is not impaired, and it is possible to automatically turn off the power by detecting forgetting to turn off the device.

  Hereinafter, a digital television which is an embodiment of the present invention will be described.

FIG. 1 is a block diagram showing a main configuration of a digital television which is an embodiment of the present invention. A digital television (TV) 101 includes a control unit 2 that controls the operation of each unit of the apparatus, a tuner 3 that receives a television broadcast signal of a selected channel (hereinafter referred to as CH), and a received television broadcast signal. A demodulator 4 that demodulates digital data; a decoder 5 that separates image data and audio data from the demodulated digital data and decompresses both; a desired OSD (On Screen Display) image and an image based on the image data; An image synthesizing unit 6, a D / A converting unit 8 for converting the signals of image data and audio data into analog signals, an operating unit 11 for accepting user operations, and an EPG data memory for storing EPG data 14, a storage unit 15 that stores a control program, a display unit 32 that displays an image on a screen, a speaker 31 that emits sound, and a current to each unit of the apparatus body It includes a power supply unit 16 for feeding, the.
In this embodiment, it is assumed that the broadcasting station broadcasts program information indicating the attributes (program name, performer, broadcasting time, etc.) of the program broadcast on each channel in addition to the program. The broadcast time includes a broadcast start time and a broadcast end time.

  Here, the power supply unit 16 and the control unit 2 correspond to the “power supply unit” of the present invention. The display unit 32 and the control unit 2 correspond to the “display unit” of the present invention. The control unit 2 corresponds to the “detection means” of the present invention.

The power supply unit 16 takes out the drive power supply of the TV 101 from the commercial power supply and supplies current to each part of the apparatus main body.
The storage unit 15 is configured by a ROM, for example.
The control unit 2 is constituted by a microcomputer, for example. The control unit 2 incorporates a RAM (not shown) as a work field for developing data processed by the control program, and a timer circuit (not shown) for measuring time in FIG. 2 described later. .

When an instruction (command) such as display of an electronic program guide (EPG), power ON / OFF / standby, channel selection, volume adjustment or the like is input to the operation unit 11, the operation unit 11 receives the command. A corresponding operation signal is output to the control unit 2. When the control unit 2 detects the operation signal, the control unit 2 performs an operation according to the command.
In addition, the operation unit 11 includes a detection unit 11A that detects a signal from the remote controller 200. The operation unit 11 and the remote controller 200 have similar keys.

The tuner 3 receives (extracts) the television broadcast signal of the selected physical channel from the television broadcast signal received by the antenna 30 based on an instruction from the control unit 2 and outputs the television broadcast signal.
The demodulator 4 demodulates the television broadcast signal output from the tuner 3 to obtain and output a transport stream (hereinafter, TS) that is digital data. In this TS, TS packets containing element signals such as images and sounds of each television program are multiplexed.

  The decoder 5 separates and extracts image data, audio data, and EPG data as the program information from the TS output from the demodulator 4. Here, the separated and extracted image data is encoded by, for example, MPEG.

The decoder 5 decodes and outputs the image data. The output image data is input to the D / A conversion unit 8 via the image composition unit 6. The decoder 5 decodes the audio data and outputs it to the D / A converter 8.
The decoder 5 outputs the EPG data separated and extracted as described above to the control unit 2. The EPG data describes the attributes (program name, performer, etc.) of the program broadcast on each channel. Then, the control unit 2 records the EPG data output from the decoder 5 in the EPG data memory 14. The EPG data memory 14 is composed of, for example, an EEPROM.

The image composition unit 6 incorporates an image memory (not shown). This image memory stores a message to turn off the power of the apparatus main body when there is no input operation. The image synthesis unit 6 includes an OSD circuit (not shown) that synthesizes an image based on image data and an OSD image representing a character or a graphic stored in the image memory based on an instruction from the control unit 2. .
Then, the image synthesis unit 6 outputs the synthesized data synthesized to the D / A conversion unit 8 based on an instruction from the control unit 2. Alternatively, the image composition unit 6 outputs the input image data as it is to the D / A conversion unit 8 based on an instruction from the control unit 2.

The D / A converter 8 converts the signal of the image data (including synthesized data) output from the decoder 5 into an analog reproduced image signal and outputs the analog reproduced image signal to the display unit 32. The display unit 32 is, for example, an LCD (Liquid Crystal Display). The D / A converter 8 converts the audio data signal output from the decoder 5 into an analog reproduced audio signal and outputs the analog reproduced audio signal to the speaker 31.
The user views the image based on the reproduction image signal output from the D / A conversion unit 8 and the sound based on the reproduction audio signal on the display unit 32 and the speaker 31.

  The control unit 2 has a sleep function that detects that the device is forgotten to be turned off and automatically turns off the power. Further, the operation unit 11 is provided with a sleep key for switching whether to enable or disable the sleep function. Hereinafter, the sleep function will be described in detail.

  FIG. 2 is a flowchart showing an operation performed by the control unit of the digital television according to the embodiment of the present invention. This operation is performed when the sleep function is enabled. As long as the sleep function is enabled by the sleep key, the control unit 2 always executes the sleep process shown in FIG.

  First, the control unit 2 starts measuring time in a built-in timer circuit (S1). The time measured here is referred to in the determination in S2 described later.

  And the control part 2 determines whether input operation is performed within a fixed time (S2) (S3). That is, here, the control unit 2 determines whether or not an operation signal is newly detected within a certain time since the operation signal was detected last time. The fixed time is a preset time, and is, for example, 10 minutes, 15 minutes, 30 minutes, or 60 minutes.

  If an input operation is performed within a certain time, the control unit 2 performs control according to the operation (S4). And the control part 2 resets the timer of a timer circuit (S5), returns to S1, and continues this process.

FIG. 3 is an example of a message displayed on the display unit 32.
On the other hand, if the input operation is not performed within a predetermined time, the control unit 2 instructs the image composition unit 6 to display an OSD message to turn off the power of the apparatus main body when there is no input operation (S6). . Then, the image synthesizing unit 6 synthesizes an image based on the image data and an OSD image representing the message stored in the image memory. Then, when there is no input operation, a message to turn off the power of the apparatus main body is displayed on the display unit 32 (see FIG. 3). Thus, the user is notified that the power of the apparatus main body is turned off when there is no input operation. When the user wants to continue watching the TV program currently being viewed, the user who has viewed the display in FIG. 3 performs some input operation (such as increasing the volume). Conversely, the user does not perform an input operation when the user is asleep, when the user is away, or when the power of the apparatus main body may be turned off.

  Then, the control unit 2 newly starts measuring time in the built-in timer circuit (S7). Here, the newly measured time is referred to in the determination in S8 described later.

  Then, the control unit 2 determines whether or not an input operation is performed within a predetermined time (S8) (S9). The predetermined time is set to a time shorter than the predetermined time. The predetermined time is, for example, 30 seconds.

  If the input operation is performed within the predetermined time, the control unit 2 performs control according to the operation (S10). And the control part 2 resets the timer of a timer circuit (S11), returns to S1, and continues this process. As a result, even if the sleep function is once enabled and the user wants to continue watching the TV program that is currently being viewed, the digital television 101 will not be forcibly turned off. .

  On the other hand, if the input operation is not performed within the predetermined time, the control unit 2 stops the supply of current, turns off the power supply of the apparatus main body to the power supply unit 16 (S12), and ends this process.

  As described above, even when the sleep function is enabled once and the user wants to continue watching the TV program that is currently being watched, the digital television 101 is forced to perform some input operation by the user. Thus, the power is never turned off. That is, even if the sleep function is enabled, usability is not impaired, and it is possible to automatically turn off the power by detecting forgetting to turn off the TV 101. For this reason, the usage rate of the sleep function can also be improved.

  Moreover, the following modifications can be employed in the embodiment of the present invention.

(First modification)
FIG. 4 is a flowchart showing an operation performed by a control unit of a digital television which is a first modification of the embodiment of the present invention. This operation is an operation in which S101 and S102 are added between S2 and S6 in FIG. 2, and the other processes (S1 to S12) are the same.

Here, there is a high possibility that the user wants to continue watching the TV program broadcast on the currently selected channel. Therefore, the control unit 2 operates as follows.
First, after S2 determination is affirmed, the control unit 2 reads EPG data from the EPG data memory 14 and refers to the EPG (S101).
Then, the control unit 2 waits until the broadcast of the television program broadcast on the currently selected channel ends (S102).
After the broadcast of the television program, the control unit 2 instructs the image composition unit 6 to display an OSD message to turn off the power of the apparatus main body when there is no input operation (S6). Thereby, a message is displayed on the display part 32 (refer FIG. 3). At this time, if the power of the apparatus main body may be turned off, the user does not perform an input operation. Then, after a predetermined time elapses, the apparatus is turned off (S12).

  As described above, when the user wants to continue watching the TV program broadcast on the currently selected channel, the user does not have to perform any input operation. Therefore, even if the sleep function is enabled, usability is not further impaired, and it is possible to automatically turn off the power by detecting forgetting to turn off the TV 101. For this reason, the usage rate of the sleep function can be further improved.

(Second modification)
FIG. 5 is a flowchart showing an operation performed by a control unit of a digital television which is a second modification of the embodiment of the present invention. This operation is an operation in which S201 to S204 are added after the negative determination in S3 of FIG. 2, and the other processes (S1 to S12) are the same.

Here, when the broadcasting of all TV programs ends, such as at midnight, when the TV 101 is turned on, the user is likely to forget to turn off the power at bedtime or the like. Therefore, the control unit 2 operates as follows.
The control unit 2 determines whether or not an input operation is performed within a certain time (S2) (S3). At this time, the control unit 2 also determines whether or not the broadcasting of all TV programs broadcast on the currently selected channel has been completed (S201). This determination is affirmative when the screen displayed on the display unit 32 becomes blue back or black back for a specified time (for example, 15 seconds).
When the broadcasting of all television programs broadcast on the currently selected channel is completed, the control unit 2 reads the EPG data from the EPG data memory 14 and refers to the EPG (S202).
Then, the control unit 2 determines based on the EPG whether any of all the TV programs broadcast on other channels is currently being broadcast (S203).
If any TV program is broadcast on another channel, the control unit 2 causes the tuner 3 to select the channel (S204), and returns to S1 to continue the processing.
On the other hand, when all the television programs are not broadcast, the control unit 2 displays the message shown in FIG. 3 on the display unit 32 (S6). Then, after a predetermined time has elapsed (S8), the apparatus is turned off (S12).

  As described above, when all TV programs are not broadcast, the power can be quickly and automatically turned off. Therefore, it is possible to further save power consumption.

The block diagram which shows the main structures of the digital television which is embodiment of this invention The flowchart which shows the operation | movement which the control part of the digital television which is embodiment of this invention performs An example of a message displayed on the display unit 32 The flowchart which shows the operation | movement which the control part of the digital television which is the 1st modification of embodiment of this invention performs. The flowchart which shows the operation | movement which the control part of the digital television which is the 2nd modification of embodiment of this invention performs.

Explanation of symbols

2-Control unit 3-Tuner 4-Demodulation unit 5-Decoder 6-Image composition unit 11-Operation unit 14-EPG data memory 15-Storage unit 16-Power supply unit 30-Antenna 31-Speaker 32-Display unit 101-Digital television John 200-remote control

Claims (4)

Receiving means for receiving a television broadcast signal transmitted from a broadcast station, and an electronic program guide indicating a broadcast end time of a television program broadcast on each channel of the television broadcast signal;
A plurality of keys, an operation means for outputting an operation signal corresponding to the operated key;
Detection means for detecting the operation signal output from the operation means;
In a digital television provided with power supply means for supplying current to each part of the apparatus body when the power is turned on,
A television broadcast on the currently selected channel with reference to the electronic program guide when the operation signal is not newly detected within a certain time since the operation signal was previously detected by the detection means. Waiting until the broadcast of the program ends, and after the end of the broadcast of the TV program, provided with a display means for displaying a message to turn off the power of the apparatus body when there is no input operation,
The display means includes
If broadcasting of all TV programs broadcasted on the currently selected channel ends within the predetermined time, whether any of all TV programs broadcasted on other channels are currently being broadcast Judging based on the electronic program guide, even when all the TV programs are not broadcast, the message is displayed,
The power source means
If the operation signal is not detected by the detection means within a predetermined time shorter than the predetermined time from the display of the message, the supply of the current is stopped and the power of the apparatus main body is turned off.
A digital television which continues to supply the current when the operation signal is detected by the detection means within the predetermined time from the display of the message. A plurality of keys, an operation means for outputting an operation signal corresponding to the operated key;
Detection means for detecting the operation signal output from the operation means;
In a television receiver provided with power supply means for supplying current to each part of the apparatus body when the power is turned on,
Display that displays a message to turn off the power of the apparatus body when there is no input operation when the operation signal is not newly detected within a predetermined time from the previous detection of the operation signal in the detection means With means,
The power source means
If the operation signal is not detected by the detection means within a predetermined time shorter than the predetermined time from the display of the message, the supply of the current is stopped and the power of the apparatus main body is turned off.
A television receiver that continues to supply the current when the detection means detects the operation signal within the predetermined time from the display of the message. Receiving means for receiving a television broadcast signal transmitted from a broadcasting station and an electronic program guide indicating a broadcast end time of a television program broadcast on each channel of the television broadcast signal;
The display means includes
When the operation signal is not newly detected within the predetermined time since the operation signal was detected last time in the detection means, the electronic program guide is referred to and broadcast on the currently selected channel. Wait for the TV program to finish broadcasting,
The television receiver according to claim 2, wherein the message is displayed after the broadcast of the television program ends. The display means includes
If broadcasting of all TV programs broadcasted on the currently selected channel ends within the predetermined time, whether any of all TV programs broadcasted on other channels are currently being broadcast Judgment based on the electronic program guide,
The television receiver according to claim 3, wherein the message is displayed when all the television programs are not broadcast.

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