JP2002218331A - Television receiving apparatus and receiving method - Google Patents

Abstract

(57) [Summary] [Problem] When a broadcast is ended and video signals are lost, a slide of a still image or BGM can be viewed, and for example, a case where a text multiplex broadcast is viewed on a single screen. In the case of no sound, BG while watching teletext
M can be heard and the added value of the product can be further improved. A television receiving apparatus having a home server such as a hard disk or a recording medium of a card type or the like and capable of reproducing image files and audio files,
When a no-signal state of video or audio is detected, the user reads and reproduces and outputs an image file or an audio file previously recorded on a hard disk or a card-type recording medium, so that a sandstorm screen, an all-blue screen, or an all-black screen Instead of the screen and the noise sound, a still image slide show or BGM sound can be viewed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention controls an image file or an audio file recorded on a home server such as a hard disk or a card-shaped recording medium such as a card-type recording medium (trade name) to be reproduced. TECHNICAL FIELD The present invention relates to a television receiver and a receiving method having the device.

[0002]

2. Description of the Related Art Conventionally, some television receivers have, for example, a non-signal detection function for determining whether or not a television signal is present in a channel being viewed. In such a television receiver, when a broadcast program ends and there is no video signal, it is determined that there is no signal, and the output of audio is stopped (audio mute state) to reproduce a noise sound called “za” which is hard to hear. To prevent In this case, the screen is in a sandstorm state, but the screen is left as it is, or the screen is changed to an all-blue screen to notify the user that the broadcast signal has disappeared.

[0003] However, in reality, when there is no signal at the time of video input from an external device, there is a case where an all black screen is displayed.
It is necessary to check the on-screen display, the LED display, and the like without knowing whether the power of the television receiver is on.
Also, when the sandstorm screen is projected, it is unsightly,
Not preferred.

[0004] Japanese Patent Application Laid-Open No. H8-275072 discloses a technique related to the above-mentioned prior art. This publication discloses a plurality of LD (laser vision disk) players that detect a player playing an image and guides a video signal from the player to a display for display, and guides a speaker to audio output. Or When not playing the LD, each player outputs a blue-back signal corresponding to an all-blue screen or performs a performance in order to prevent the screen from being difficult to see due to noise or the like due to a no-signal state (sandstorm screen). It is described that when the actual video signal is output after the start, the LD player interrupts the output of the blue-back signal and outputs the actual video signal instead of the blue-back signal.

[0005] Further, television receivers having a function of recording still images and music on a home server or a card-shaped recording medium by a built-in hard disk or the like, and reading, decoding and reproducing the still images will be widespread in the future. With this apparatus, it is possible for a user to enjoy a favorite image or music by playing it on a television receiver without using a personal computer or a digital still camera.

According to the above-mentioned publication, when an LD is not reproduced, the LD player only outputs a screen of a single blue color. However, a television receiving apparatus having a home server such as a hard disk or a recording medium of a card type or the like is used. If the device is used, when the video signal or audio signal sent in real time is lost or when the external input is lost, the home server such as the built-in hard disk and the recording medium such as the card type will be proactively used. Can be used to prevent unsightly sandstorm screens and the unpleasant noise of "zar", but none of them has been realized in the past.

[0007]

As described above, when the broadcast is actually finished without being noticed and the sand storm screen is displayed, if the state continues, it becomes unsightly and wastes power and time. Feeling spent. Also, since no sound is output at that time, it is often easy to forget that the television receiver was turned on.

[0008] Furthermore, when watching a text multiplex broadcast or a data broadcast on one screen, there is no sound, and there is a feeling that it is unsatisfactory.

In view of the above circumstances, the present invention provides a home server such as a hard disk or a television receiver having a recording medium of a card type or the like. And all blue screen /
Instead of an all black screen, it is possible to view a slide or BGM of a still image, and, for example, when a non-speech state is detected, such as when a text multiplex broadcast is viewed on a single screen, the text multiplex broadcast is not displayed. You can listen to BGM while watching,
It is an object of the present invention to provide a television receiver and a receiving method capable of improving the added value of a product.

[0010]

A television receiver according to the present invention receives a television broadcast signal and outputs a video signal and an audio signal, and a video signal and an audio output from the reception circuit. Determining means for determining a signal state of a signal; decoding means for reading and decoding the image file or the audio file from a home server or a recording medium in which the image file or the audio file is recorded in advance, and outputting the image signal and the audio signal And, when it is determined that the video signal or audio signal is not output from the receiving circuit by the determination unit,
A video / audio switching control circuit for outputting an image signal or an audio signal from the decoding means instead of the output signal from the receiving circuit.

According to the present invention, when no signal is detected or no sound is output, an image file or a sound file is decoded from a home server such as a hard disk or a recording medium such as a card and automatically reproduced. be able to. This allows the user to be notified that there is no signal or no sound, and to output a still image slide or BGM that suits the user's preference instead of a sandstorm screen or an all-blue screen / all-black screen. Can be.
This is useful when the broadcast ends.

A television receiving apparatus according to the present invention receives a television broadcast signal and outputs a video signal and an audio signal, and a signal state of the video signal and the audio signal output from the receiving circuit. A decoding means for reading and decoding the image file or the audio file from a home server or a recording medium in which the image file or the audio file is recorded in advance, and outputting an image signal and an audio signal; Means for outputting an image signal or an audio signal from the decoding means instead of the output signal from the receiving circuit when it is determined that the video signal or the audio signal is not output from the receiving circuit by the means. An audio switching control circuit and the video / audio switching control circuit Setting means for setting whether the output of the receiving circuit to perform the switching to the output of the decoding means, those provided with the.

According to the present invention, when no signal is detected or no sound is output, a still image or a sound is reproduced from a home server such as a hard disk or a recording medium such as a card type. Is set in advance by the user, and when the state set by the user is detected (determined), the image file or audio file recorded by the user can be read from a home server such as a hard disk or a recording medium such as a card type. Decode and automatically play back.

Further, a television receiver according to the present invention includes a television broadcast receiving circuit for receiving a television broadcast signal and obtaining a broadcast video signal and a broadcast audio signal.
A video output means for outputting a video signal for display on a display means, an audio output means for outputting an audio signal for reproduction by a sound reproduction means, and extracting and decoding a character multiplexed signal superimposed on the broadcast video signal Multiplexed signal receiving circuit for outputting the broadcast multiplexed signal, video selecting means for selecting the broadcast video signal and the decoded character multiplexed signal and supplying the same to the video output means, and the broadcast audio supplied to the audio output means Discriminating means for discriminating a signal state of a signal, audio decoding means for reading and decoding the audio file from a home server or a recording medium in which an audio file is recorded in advance, and outputting an audio signal; When it is determined that the broadcast audio signal is not supplied to the audio output unit, the audio decoding unit replaces the broadcast audio signal. , A voice switching control circuit for switching to supply the audio signal to the audio output means is obtained by including a.

According to the present invention, when a soundless state of a broadcast audio signal is detected (determined), audio from a home server or a recording medium can be heard as BGM while watching a broadcast video or a character multiplexed video. The added value of the product can be improved.

Further, a television receiver according to the present invention includes a television broadcast receiving circuit for receiving a television broadcast signal and obtaining a broadcast video signal and a broadcast audio signal.
A video output means for outputting a video signal for display on a display means, an audio output means for outputting an audio signal for reproduction by a sound reproduction means, and extracting and decoding a character multiplexed signal superimposed on the broadcast video signal Multiplexed signal receiving circuit for outputting the broadcast multiplexed signal, video selecting means for selecting the broadcast video signal and the decoded character multiplexed signal and supplying the same to the video output means, and the broadcast audio supplied to the audio output means Discriminating means for discriminating a signal state of a signal, audio decoding means for reading and decoding the audio file from a home server or a recording medium in which an audio file is recorded in advance, and outputting an audio signal; When it is determined that the broadcast audio signal is not supplied to the audio output unit and the audio output unit is in a silent state, the sound is replaced with the audio signal instead of the broadcast audio signal. An audio switching control circuit for switching the audio signal from the decoding means to be supplied to the audio output means; and an audio switching control circuit for converting the broadcast audio signal based on the determination result of the determination means to the output of the audio decoding means. Setting means for setting whether or not to execute the switching.

In the present invention, the user sets in advance whether or not to reproduce sound from a home server such as a hard disk or a recording medium such as a card when a broadcast audio signal is not being output. By doing
When a silent state of a broadcast audio signal is detected (determined), the sound from a home server or a recording medium can be heard as BGM while watching a broadcast video or a character multiplexed video, thereby improving the added value of the product. Becomes possible.

In the television receiving method according to the present invention, a receiving step of receiving a television broadcast signal and outputting a video signal and an audio signal, and judging a signal state of the video signal and the audio signal output from the receiving step A decoding step of reading and decoding the image file or the audio file from a home server or a recording medium in which the image file or the audio file is recorded in advance, and outputting an image signal and an audio signal; When it is determined that the video signal or the audio signal from the receiving step is not output, instead of the output signal from the receiving step, the video / audio signal that outputs the image signal or the audio signal from the decoding step is output. Voice switching control step.

[0019]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram illustrating a configuration of a television receiver according to an embodiment of the present invention. A television receiver provided with a slot in which a card type recording medium can be mounted will be described.

A television receiver 10 shown in FIG. 1 includes an antenna 11, a receiving circuit 12, a video / audio control circuit 13,
A video / audio output processing circuit 14, a cathode ray tube (CRT) 15 as display means, a speaker 16 for an audio left (L) signal,
A speaker 17 for an audio right (R) signal, an on-screen display generation circuit 18, a slot 19 in which a card-type recording medium can be mounted, a recording medium interface (I / F) 20, and discrimination, setting, decoding, etc. The television microcomputer 21 is a control unit having functions, and an operation unit (not shown) for inputting various instructions to the television microcomputer 21 is provided. Each circuit connected to the TV microcomputer 21 (receiving circuit 12, video / audio control circuit 13, on-screen display generation circuit 18, recording medium interface I / F2
0) are connected by an IIC bus line (an internal data bus: a signal line in which a clock signal and a data signal are physically different). The portion indicated by the broken line frame is a portion indicating the characteristic value-added function of the present invention.

The receiving circuit 12 receives a television broadcast signal received by the antenna 11, detects an image, and outputs a video signal and an audio signal.

The television microcomputer 21 physically includes at least an arithmetic processing CPU, a program ROM, and a data RAM. The TV microcomputer 21 has a function of determining a signal state of a video signal and an audio signal from the receiving circuit 12, and a state in which the video signal and the audio signal are not output by the determination function, that is, a broadcast television signal itself. It is set so that the user can output a pre-recorded image file or audio file when discriminating the absence of no signal or when discriminating the absence of audio in which video signals are output but audio signals are not output. A setting function for storing, and when a non-signal state of a video signal and an audio signal from the receiving circuit 12 is determined, an image file or an audio file recorded by a user is read and decoded from a home server or a recording medium, Channel selection and on-screen in response to output decoding function and instructions from operation means (not shown) And a control function for performing various controls, including shows and the like.

The television microcomputer 21 as a discriminating means discriminates the signal state of the video signal and the audio signal from the receiving circuit 12 (whether there is a signal or no signal). The absence of a signal can be determined by the TV microcomputer 21 by determining the presence or absence of a synchronization signal.The absence of a sound controls whether the TV microcomputer 21 is outputting sound by itself. It can be determined from the fact that

The setting means for setting the no-signal detection operation setting or the no-sound detection operation setting includes an image file recorded on a home server or a recording medium by the user when the discrimination means discriminates no signal or no speech. Alternatively, it is for setting in advance whether or not to reproduce the audio file.

The setting means for setting the no signal detection operation setting or the no sound detection operation setting includes an on-screen display generation circuit.
On the setting screen (described later with reference to FIG. 3) displayed on the CRT 15 on the CRT 15 by the user, the user turns on the no-signal detection operation setting or the no-voice detection operation setting on the on-screen display setting screen. -It has a part of the operation means for selecting OFF, and the television microcomputer 21 as a setting function for holding the selection content of the no signal detection operation or the no sound detection operation.

TV microcomputer 21 as decoding means
When a non-signal state of a video signal and an audio signal from the receiving circuit 12 is determined, from a home server or a recording medium on which an image file or an audio file is recorded,
It reads an image file or an audio file, decodes it, and outputs it.

The video / audio switching control circuit 13 is normally used when the discrimination means by the television microcomputer 21A does not discriminate between no signal and no sound (the setting does not correspond to the setting of the no signal detection operation setting or the no sound detection operation setting). Signal state), the video and audio signals of the television broadcast are
Output to the audio output processing circuit 14. On the other hand, when the discrimination means by the television microcomputer 21A discriminates between no signal and no sound, the video / audio switching control circuit 13 sets the image file recorded on the home server or the recording medium in accordance with the no signal detection operation setting or the no sound detection operation. Alternatively, a signal obtained by decoding the audio file is output to the video / audio output processing circuit 14 at the next stage. That is, when no signal or no sound is discriminated by the discriminating means of the TV microcomputer 21, the TV microcomputer 21 uses the card-type recording medium I / F 20 to record the recording medium (not shown).
A video file or an audio file recorded by the user in advance is read out, decoded, and displayed on the CRT 15 via the video / audio output processing circuit 14 or output to the speakers 16 and 17 as audio.

The video / audio output processing circuit 14 receives the video signal and the audio signal from the video / audio switching control circuit 13,
R, G, B signals and voice L, R signals are converted to CRT15
And to the speakers 16 and 17. On the other hand, the video / audio output processing circuit 14 receives on-screen display signals (R, G, B signals) such as various setting screens and channel displays from the on-screen display generation circuit 18 and performs the video / audio switching. The control circuit 13 can superimpose the R, G and B signals and output the signals to the CRT 15.

Next, the characteristic operation of the present invention will be described with reference to the flowchart of FIG. 2 and the setting screen of FIG.
FIG. 3 shows a screen display example of the user setting item screen.

First, for example, a menu button arranged on operation means (not shown) of the television receiver (TV) is pressed, and a screen for setting a no-signal detection operation shown in FIG. 3 (a) or FIG. 3 (b) is displayed. The setting screen for the no-sound detection operation shown is displayed.

In step S1, (1) whether or not to reproduce an image (slide) or sound (BGM) from a card-type recording medium (not shown) when no signal is detected; Audio (BG
The user sets whether or not to reproduce M). 3 (a) and 3 (b), the selection is made by the arrow keys (←, →), and the determination is completed by the determination key. In step S1, the above (1),
The determination item (2) is set in the television microcomputer 21.

Note that the user previously copies (records) an image file or a sound file to be reproduced when there is no signal or no sound on a card type recording medium (not shown). It is necessary to attach it. By setting the above items (1) to (3), it becomes possible to automatically reproduce an image or a sound when the determination means detects a no-signal or no-sound state.

In the next step S2, the TV microcomputer 21
Manages the determination of the no-signal detection / no-sound detection state periodically.

Then, control goes to a step S3. Here, when detecting no signal or no sound, the television microcomputer 21 executes a slide-on or BGM-on operation set by the user. That is, the image file or the audio file recorded on the card type recording medium is reproduced.

FIG. 4 shows a display example when an image file is reproduced on the screen of the CRT 15. Here, a display example in a case where two image files (jpeg) are recorded on the card type recording medium is shown. The television microcomputer 21 can read and decode two image files, for example, from a card-type recording medium at predetermined time intervals (for example, every 5 seconds) and display them on a CRT screen.

Next, referring to the flowchart of FIG.
The operation of the television receiver shown in FIG. 1 will be described. FIG. 5 shows an example of the control flow of the television microcomputer 21.

First, the television microcomputer 21 proceeds to step S21.
Then, based on the presence or absence of the synchronization signal of the video signal from the receiving circuit 12, it is determined whether or not the television broadcast signal itself is in a non-signal state without being present. If there is no signal, the process proceeds to step S22, and it is determined whether the no signal has continued for a certain period of time. If the no-signal state has continued for a predetermined time, the process proceeds to step S23.

In step S23, it is confirmed whether or not the slide-on setting is made in the no-signal detection operation setting. If the setting of slide = ON has been made, loading of the image file from the home server or the recording medium is started (step S24), and it is determined whether or not there is an image file (step S25). If there is an image file, the process proceeds to step S26 to execute a slide show, and then proceeds to step S26.
Proceed to 28. If no (No) in steps S21, S22, S23, S25, a slide show is not performed,
Proceed to step S28.

In step S28, it is determined again whether there is no signal. If there is no signal, the process proceeds to step S29, and it is determined whether the no signal has continued for a certain period of time. If there is no signal for a fixed time, step S
Proceed to 30.

In step S30, the television microcomputer 21
Check whether BGM = ON is set in the no-signal detection operation setting. If the setting of BGM = ON has been made, the loading of the audio file from the home server or the recording medium is started (step S31), and it is determined whether or not there is an audio file (step S32). If there is an audio file, BGM reproduction is executed in step S33. If there is no audio file, BGM reproduction is not performed.

If there is no signal in step S28, if the predetermined time has not elapsed in step S29, or if BGM is off in step S30, the process proceeds to step S35.

In step S35, it is determined whether the video signal is output from the receiving circuit 12 but the audio signal is not output, that is, whether there is no audio. If it is in the silent state, the process proceeds to step S36, and it is determined whether or not the silent state has continued for a predetermined time. If the soundless state has continued for a predetermined time, the process proceeds to step S37.

In step S37, the television microcomputer 21
It is confirmed whether or not BGM = ON is set in the no-sound detection operation setting. If the setting of BGM = ON has been made, the loading of the audio file from the home server or the recording medium is started (step S31), and it is determined whether or not there is an audio file (step S32). If there is an audio file, BGM reproduction is executed in step S33. If there is no audio file, BGM reproduction is not performed. If no (No) in steps S35, S36, S37, BGM reproduction is not performed.

According to the above-described embodiment, a television receiver capable of reading and reproducing image files and audio files from a home server such as a hard disk or a recording medium such as a card type reproduces image files. By using the function and audio file playback function, it is possible to set whether to automatically play an image file or an audio file when a video and audio no-signal state is detected. When the video signal is lost, the user plays the image file or audio file recorded by the user, and displays the sand storm screen, all blue screen / all black screen, or the noise sound of "za", but the user's preference It is possible to view a slide or BGM of a still image that suits the situation.

FIG. 6 is a block diagram showing a configuration of a television receiver according to another embodiment of the present invention. The present embodiment shows a television receiver having a built-in teletext broadcast receiving circuit. 1 will be described with the same reference numerals. As in FIG. 1, circuits connected to the television microcomputer 21 are connected by an IIC bus line. The portion indicated by the broken line frame is a portion indicating the characteristic value-added function of the present invention.

The difference between the television receiver 10A shown in FIG. 6 and FIG.
The first video / audio switching control circuit 23 is provided.

The teletext broadcast receiving circuit 22 receives the video signal output from the receiving circuit (that is, the television broadcast receiving circuit) 12, takes out the teletext broadcast signal superimposed on the video signal, and decodes it. is there.

The first video / audio switching control circuit 23
Receives a character / graphic signal (video signal) and an additional sound signal (audio signal) output from the teletext broadcast receiving circuit 22, and inputs a video signal and an audio signal output from the television broadcast receiving circuit 12. In this case, the output of one of the sets (text multiplex broadcast reproduction signal or television broadcast reproduction signal) is switched and output.

The television microcomputer 21A includes at least an arithmetic processing CPU, a program ROM, and a data RAM. The TV microcomputer 21A functionally changes the state of the audio signal from the teletext broadcast receiving circuit 22 when the first video / audio switching control circuit 23 selects the output of the teletext broadcast receiving circuit 22. When the first video / audio switching control circuit 23 selects the output of the television broadcast receiving circuit 12,
And a discrimination function for discriminating the signal state of the video signal and the audio signal from the home server or a recording medium on which at least the audio file is recorded when the non-signal state of the audio signal from the teletext receiving circuit 22 is determined. 6, the audio file is read from the card-type recording medium), decoded and output, and when it is determined that the video signal or the audio signal from the television broadcast receiving circuit 12 has no signal, the image file or the audio file is recorded. A decoding function of reading and decoding an image file or an audio file from a home server or a recording medium, and outputting the image file or the audio file. The home server or the recording medium is automatically determined when a no-signal state of the audio signal from the teletext receiving circuit 22 is determined. It is possible to preset (hold) whether or not to play audio files from When a non-signal state of a video signal or an audio signal from the broadcast receiving circuit 12 is determined, whether or not to automatically reproduce an image file or an audio file from a home server or a recording medium is set (held) in advance. And a control function of performing various controls including tuning and on-screen display in response to an instruction from operation means (not shown).

The video / audio switching control circuit (that is, the second video / audio switching control circuit) 13 is normally used when the discriminating means of the television microcomputer 21A does not discriminate between no signal and no sound (no signal detection operation setting or no signal). If it does not correspond to the setting of the audio detection operation setting), the first video / audio switching control circuit
The video and audio signal of the character multiplex broadcast or television broadcast selected in 23 is converted into a video / audio output processing circuit 14 in the next stage.
When the discrimination means by the television microcomputer 21A determines no signal or no sound, the image file or the sound file recorded on the home server or the recording medium is decoded according to the no signal detection operation setting or the no sound detection operation setting. The signal is output to the video / audio output processing circuit 14 at the next stage.

In the above-described television receiver 10A, when the user selects and watches the teletext broadcast and the television microcomputer 21A determines the non-voice state of the audio signal from the teletext broadcast receiving circuit 22, According to the set no-sound detection operation setting (see FIG. 3 (b)), at least the audio file is read from the home server or the recording medium on which the audio file is recorded and decoded, and the speaker 16,
You can output sound from 17.

Similarly, when the television microcomputer 21A determines that the audio signal from the television broadcast receiving circuit 12 has no audio when the user selects and watches the television broadcast, a preset audio According to the detection operation setting (see FIG. 3B), the audio file can be read from at least the home server or the recording medium on which the audio file is recorded, decoded, and output from the speakers 16 and 17.

According to the embodiment shown in FIG. 6, it is possible to play the user's favorite BGM while watching the text multiplex broadcast on a single screen, or to listen to the favorite BGM while watching the television receiver.

According to the embodiment of the present invention described above,
Record a still image or sound that the user wants to play back when no signal or no sound is detected on a home server such as a built-in hard disk or a card-type recording medium. In the state,
The user can set in advance whether to play the still image or the sound recorded by the user from the home server or the recording medium, and the no-signal detection operation state and no-sound detection operation set by the user When the state is reached, the image file or the audio file recorded by the user can be read from the home server or the recording medium, decoded, and automatically reproduced. It is possible to output not only a sandstorm screen or an all-blue screen and no sound but also a user's favorite image or sound, and obtain an audiovisual effect.

In particular, even when the broadcaster has not noticed that the broadcast has ended in the middle of the night, he / she may see the sandstorm screen later and feel uncomfortable,
After the video has been played, the screen turns black and the user does not forget to turn on the TV. Also, it is possible to play BGM while watching a text multiplex broadcast or an IT broadcast on one screen, or to listen to a favorite BGM while watching a television receiver.

At the same time, the user can confirm that the image file or the audio file recorded by the user is being reproduced, thereby confirming that there is no signal or no sound. is there.

In FIG. 1, the video / audio switching control circuit 13 is configured to be capable of inputting an external input video signal from a video device (for example, a VTR). In this configuration, the non-signal detection operation setting or the no-sound detection operation setting as shown in FIG. 3 is performed, so that the reproduction by the video device ends and the screen of the CRT 15 becomes black, It is possible to prevent the user from forgetting that the power of the John receiver 10 is on. Therefore, the present invention can be applied not only to a case where a real-time television broadcast signal is received, but also to a case where a reproduction signal from a video device is input.

[0058]

As described above, according to the present invention, in a television receiving apparatus having a home server such as a hard disk or a recording medium such as a card type, when a broadcast is terminated and video signals are lost, a sandstorm Instead of the screen or the all-blue screen / all-black screen, it is possible to view a slide or BGM of a still image recorded on a home server or a recording medium. Further, for example, when a silent state is detected when a text multiplex broadcast is viewed on a single screen, the user can listen to the BGM while watching the text multiplex broadcast, thereby improving the added value as a television device product. Can be.

[Brief description of the drawings]

FIG. 1 is an exemplary block diagram illustrating a configuration of a television receiver according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating a characteristic operation of the present invention.

FIG. 3 is a diagram showing a screen display example of a user setting item screen.

FIG. 4 is a diagram showing a screen display example when an image file is reproduced.

FIG. 5 is an exemplary flowchart illustrating the operation of the television receiver in FIG. 1;

FIG. 6 is a block diagram showing a configuration of a television receiver according to another embodiment of the present invention.

[Explanation of symbols]

10, 10A television receiver 12 reception circuit 13 video / audio switching control circuit 15 CRT (display means) 19 card-type recording medium slot 21, 21A television microcomputer (discrimination function, setting function, decoding function, With control function)

Claims (9)

[Claims] A receiving circuit that receives a television broadcast signal and outputs a video signal and an audio signal; a determining unit that determines a signal state of the video signal and the audio signal output from the receiving circuit; Decoding means for reading and decoding the image file or the audio file from the home server or the recording medium on which the file or the audio file is recorded, and outputting an image signal and an audio signal; and a video signal or A video / audio switching control circuit that outputs an image signal or an audio signal from the decoding means instead of the output signal from the receiving circuit when it is determined that the audio signal is not output. A television receiver characterized by the above-mentioned. 2. A receiving circuit for receiving a television broadcast signal and outputting a video signal and an audio signal, a determining means for determining a signal state of the video signal and the audio signal output from the receiving circuit, Decoding means for reading and decoding the image file or the audio file from the home server or the recording medium on which the file or the audio file is recorded, and outputting an image signal and an audio signal; and a video signal or A video / audio switching control circuit that outputs an image signal or an audio signal from the decoding means instead of the output signal from the receiving circuit when it is determined that the audio signal is not output; An audio switching control circuit outputs the output of the receiving circuit based on the result of the determination by the determining means to the decoding means. Television receiver to a setting means for setting whether or not to perform the switching to the force, by comprising the features. 3. The discriminating means detects and discriminates a no-signal state in which both a video signal and an audio signal do not exist at least in an output of the receiving circuit and a non-voice state in which only audio does not exist. The setting means includes means for on-screen display of the no-signal state detection operation setting screen or the no-sound state detection operation setting screen, and detection of no-signal by the user on the on-screen display setting screen. The television according to claim 2, further comprising: means for selecting on / off of an operation or a no-sound detection operation; and means for holding selection contents of the no-signal detection operation or the no-sound detection operation. John receiver. 4. The decoding means, when judging a non-signal state of the video signal and the audio signal, if a plurality of image files or audio files are recorded on a home server or a recording medium, sequentially decode the images. 4. A file or an audio file is read and decoded to output an image signal or an audio signal.
The television receiver according to any one of the above. 5. A television broadcast receiving circuit for receiving a television broadcast signal to obtain a broadcast video signal and a broadcast audio signal, a video output means for outputting a video signal to be displayed on a display means, and a sound signal for outputting a sound signal. Audio output means for outputting to be reproduced by the reproduction means; a character multiplexed signal receiving circuit for extracting and decoding and outputting a character multiplexed signal superimposed on the broadcast video signal; and the broadcast video signal and the decoded text Video selection means for selecting a multiplexed signal and supplying it to the video output means; determination means for determining a signal state of the broadcast audio signal supplied to the audio output means; a home server in which an audio file is recorded in advance Or an audio decoding unit for reading and decoding the audio file from a recording medium and outputting an audio signal; An audio switching control circuit for switching to supply an audio signal from the audio decoding means to the audio output means instead of the broadcast audio signal when it is determined that the broadcast audio signal is not supplied to the stage; A television receiver, comprising: 6. A television broadcast receiving circuit for receiving a television broadcast signal to obtain a broadcast video signal and a broadcast audio signal, a video output means for outputting a video signal to be displayed on a display means, and a sound signal for outputting a sound signal. Audio output means for outputting to be reproduced by the reproduction means; a character multiplexed signal receiving circuit for extracting and decoding and outputting a character multiplexed signal superimposed on the broadcast video signal; and the broadcast video signal and the decoded text Video selection means for selecting a multiplexed signal and supplying it to the video output means; determination means for determining a signal state of the broadcast audio signal supplied to the audio output means; a home server in which an audio file is recorded in advance Or an audio decoding unit for reading and decoding the audio file from a recording medium and outputting an audio signal; When it is determined that the broadcast audio signal is not supplied to the stage and the audio state is not supplied, an audio signal from the audio decoding unit is supplied to the audio output unit instead of the broadcast audio signal. An audio switching control circuit for switching, and setting means for setting whether or not to cause the audio switching control circuit to execute switching from the broadcast audio signal to the output of the audio decoding means based on the determination result of the determination means. A television receiver, comprising: 7. The setting means includes means for displaying a no-sound detection operation setting screen on-screen, and a user turning on / off the no-sound detection operation on the on-screen display setting screen. The television receiving device according to claim 6, further comprising: a selecting unit; and a unit configured to hold a selection content of the silent detection operation. 8. A home server or a recording medium on which a plurality of audio files are recorded, wherein the decoding means determines when the broadcast audio signal has no sound. The television receiver according to any one of claims 5 to 7, wherein the plurality of audio files are sequentially read and decoded, and an audio signal is output. 9. A receiving step of receiving a television broadcast signal and outputting a video signal and an audio signal; a determining step of determining a signal state of the video signal and the audio signal output from the receiving step; A decoding step of reading and decoding the image file or the audio file from a home server or a recording medium on which the file or the audio file is recorded, and outputting an image signal and an audio signal; When it is determined that no signal or audio signal is output, instead of the output signal from the receiving step,
A video / audio switching control step of outputting an image signal or an audio signal from the decoding step; and a television receiving method.