JPH1169248A - Television receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a user to recognize the operating state of a system by avoiding displaying on a screen, when the transferring time of a program is shorter than a previously set time, displaying information that the program is being transferred on the screen, when the transferring time is longer on the contrary and displaying the end of transfer on the screen at the time of finishing the transfer of the program so as to switch contents to be displayed along the transferring processing of the program. SOLUTION: A program transfer controlling means 5 periodically detects whether microprogram contents change or not and sends a discriminating signal expressing, whether or not a programmable arithmetic means 2 is in the middle of loading the microprogram to a screen display control means 6, depending on the detected result. When the discriminating signal showing the loading of the microprogram to the means 2 is inputted from the means 5, the means 6 monitors the time from the start of loading and compares a loading time and a set loading time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver, and more particularly to, for example, a DSP (Digital Sig
The present invention relates to a television receiver using programmable operation means represented by a nal processor.

[0002]

2. Description of the Related Art In recent years, digital television receivers that perform signal processing using a DSP have been actively developed.

[0003] As a television receiver using this kind of DSP, Japanese Patent Laid-Open No. 5-56372 discloses a television receiver that automatically changes a broadcasting system based on an input signal even if the user does not particularly recognize the broadcasting system. There has been proposed a system in which the video signal processing program can be recognized and automatically set to contents suitable for a broadcasting system.

FIG. 8 is a block diagram showing a circuit configuration of a television receiver according to the above publication. Referring to FIG. 8, a signal received by antenna 200 is connected to tuner 2.
01, the selected channel is determined. The intermediate frequency signal derived from the tuner 201 is amplified by an intermediate frequency amplifier (IF amplifier) 202 and supplied to a detector 203. The video signal output from the detector 203 is
The synchronous reproduction deflection control circuit 2 selected by the selection circuit 204
06 and the A / D converter 207. Then, the selection circuit 204 selects and introduces an external video signal from the terminal 205.

[0005] The digitized video signal includes a plurality of D signals.
The video signal is supplied to the video signal processing device 210 constituted by the SP, and is processed according to the video signal processing program.
A loader circuit 501 is connected to the video signal processing device 210, and the loader circuit 501 transfers program data from the program memory 211 to the video signal processing device 2.
Write to each of the 10 DSPs. Here, the program data is automatically written in accordance with the broadcast system of the input signal, and the broadcast system is determined by the system determination circuit 500. Specifically, the scheme determination circuit 500 determines which of the NTSC scheme, the PAL scheme, and the SECAM scheme is based on the video signal from the selection circuit 204.

[0006] The system determination circuit 500 provides the program memory 211 with a bank select signal in which a program corresponding to the broadcast system is stored, and also provides a loader circuit 501 with a trigger pulse. As a result, the program in the program memory 211 is sequentially transferred to a plurality of DSPs. As a result, the signal processing mode inside the video signal processing device 210 is set. The video signal processed by the video signal processing device 210 is supplied to the D / A converter 208, converted into an analog signal, and then supplied to the color CRT 209.

[0007]

Generally, in the case of realizing a television receiver capable of processing a plurality of video signals, a dedicated video signal processing circuit corresponding to each broadcasting system is required, and more functions are required. In order to realize the above, many circuits are required. Therefore, there is a cost problem. Therefore, a DSP that can process a plurality of video signals with one circuit has been demanded. Recently, D
In a signal processing circuit using the SP, a plurality of video signals can be processed and configured by one video processing circuit. However, for example, when switching from a video signal according to one broadcasting system to a video signal according to another broadcasting system, a time for transferring a program occurs. As a result, incorrect image output may be performed. It is a fact that such a situation cannot be avoided at present.

In order to cope with such a current situation, the present inventors use a DSP to process a plurality of video signals with one video processing circuit, and perform program transfer by the DSP,
I imagined that the operating state of the system, such as the completion of the DSP program transfer, could be adaptively displayed on the display screen. Further, the present inventors have conceived that the contents of the DSP should be automatically switched when the input video signal is switched. The present invention has been made based on the above idea, and has as its object to provide a television receiver that allows a user to recognize the operation state of the system.

[0009]

In order to achieve the above object, a television receiver according to the present invention is controlled by a program and executes a television signal processing. When transferring the program to be supplied to the execution means and the television signal processing execution means, the program is being transferred on condition that the transfer time of the program is shorter than a preset time. Is not displayed on the display screen, while the information indicating that the program is being transferred is displayed on the display screen, provided that the program transfer time is longer than a preset time. The transfer of the program supplied to the display control means during program transfer to be displayed above and the television signal processing execution means has been completed. A program transfer end display control means for displaying information indicating that the transfer of the program has been completed on the display screen, and switching contents to be displayed on the display screen in accordance with the program transfer process. It is a feature.

A television receiver according to a second aspect of the present invention is provided with a storage device in which a program for preliminarily defining a video decoding processing algorithm is stored, and supplied in accordance with the program stored in the storage device. Video signal decoding processing means for decoding an incoming video signal; program transfer control means for generating a control signal for controlling the transfer of a program stored in the storage means to the decoding processing means; A transfer state of the program stored in the storage means to the decoding processing means is determined based on a control signal from the control means, and contents to be displayed on a display screen are controlled in accordance with a result of the determination. Display content control means for generating a discrimination signal for use with the discrimination signal from the screen display content control means. Zui it is intended, characterized in that it comprises a screen display output content switching means for switching the output content on the display screen.

According to a third aspect of the present invention, there is provided a television receiver controlled by a program, a television signal processing executing means for executing a television signal processing, and a broadcasting system based on an input video signal. Signal switching means for switching the content of the program supplied to the television signal processing execution means and switching the content to be displayed on the display screen in accordance with the determination result of the video signal determination means. And characterized in that:

According to a fourth aspect of the present invention, there is provided a television receiver in which a program for preliminarily storing a video decoding algorithm is stored, and supplied in accordance with the program stored in the storage device. Video signal decoding processing means for decoding an incoming video signal; program transfer control means for generating a control signal for controlling transfer of a program stored in the memory to the video signal decoding processing means; The transfer state of the program stored in the storage means to the decoding processing means is determined based on a control signal from the transfer control means, and the content to be displayed on the display screen is controlled according to the determination result. Screen display content control means to determine the broadcast system based on the input video signal, and the determination result In response, the video signal decoding first discrimination signal for switching the contents of the program to be supplied to the processing means, and display a second for switching the screen
One of a program stored in the storage unit and a program input from the outside based on a first determination signal from the broadcast system determination unit. Any one of the screen display content control means and the broadcast method discrimination means should be selected based on the program content switching means for switching to output one of the contents and the second discrimination signal from the broadcast method discrimination means. It is characterized by including output selection means for deciding the brightness and screen display output content switching means for switching the output content to the display screen based on the selected output from the output selection means.

According to a fifth aspect of the present invention, a television receiver is controlled by a program.
A television signal processing executing means for executing the television signal processing, and the user selects a channel by a required means, thereby determining the channel selected by the user based on the input channel information. Switching means for switching the contents of the program supplied to the television signal processing execution means and for switching the contents to be displayed on the display screen in accordance with the determination result.

According to a sixth aspect of the present invention, there is provided a television receiver in which a program for preliminarily defining a video decoding algorithm is stored, and supplied in accordance with the program stored in the storage device. Video signal decoding processing means for decoding an incoming video signal; program transfer control means for generating a control signal for controlling transfer of a program stored in the memory to the video signal decoding processing means; The transfer state of the program stored in the storage means to the decoding processing means is determined based on a control signal from the transfer control means, and the content to be displayed on the display screen is controlled according to the determination result. Screen display content control means to select the channel selected by the user based on the input channel information. To determine, in accordance with this determination result,
A selected channel discriminating means for generating a first discriminating signal for switching the contents of the program supplied to the video signal decoding processing means and a second discriminating signal for switching the display screen; Program content switching means for switching to output one of a program stored in the storage means and a program inputted from the outside based on a first determination signal; and the selected channel determination means Output selection means for determining which output should be selected from the screen display content control means and the selected channel determination means based on the second determination signal from
A screen display output content switching means for switching output contents to a display screen based on the selection output from the output selection means.

According to a seventh aspect of the present invention, a television receiver is controlled by a program.
The television signal processing execution means for executing the television signal processing, and the broadcasting method selected by the user by comparing the pre-stored information of the broadcasting method for each channel with the input channel information. The contents of the program supplied to the television signal processing execution means are not changed on the condition that the two match, as a result of the comparison determination. Switching means for switching the contents of the program supplied to the processing execution means and for switching the contents to be displayed on the display screen in accordance with the transfer process of the program.

The television receiver according to the present invention is provided with a storage means in which a program for preliminarily defining a video decoding processing algorithm is stored, and supplied in accordance with the program stored in the storage means. Video signal decoding processing means for decoding an incoming video signal; program transfer control means for generating a control signal for controlling transfer of a program stored in the memory to the video signal decoding processing means; The transfer state of the program stored in the storage means to the decoding processing means is determined based on a control signal from the transfer control means, and the content to be displayed on the display screen is controlled according to the determination result. Screen display content control means, broadcast system information for each channel stored in advance, The first discrimination signal for switching the contents of the program supplied to the video signal decoding processing means is determined according to the comparison determination result by comparing the received broadcast channel information with the received channel information. And a program stored in the storage means based on the first determination signal from the selected broadcast method determination means for generating a second determination signal for switching the display screen, and And a program content switching means for switching to output one of the contents of a program input from the outside, and the screen display content control means based on a second determination signal from the selected broadcast system determination means, Output selection means for deciding which output should be selected from among the selected broadcast system determination means, and a selection from the output selection means. Based on the output,
And a screen display output content switching means for switching the output content to the display screen.

[0017]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. (Embodiment 1) FIG. 1 is a block diagram showing a circuit configuration of a television receiver according to Embodiment 1 of the present invention. Referring to FIG. 1, a television receiver according to the first embodiment has an RA in which a plurality of microprograms for defining a plurality of video decoding processing algorithms are stored in advance.
M3, a programmable operation means 2 for decoding (signal processing) the supplied video signal in accordance with the broadcasting system in accordance with the microprogram stored in the RAM3, and a programmable operation of the microprogram stored in the RAM3 A program transfer control means for generating a control signal for controlling the transfer to the means, and an RA based on a control signal from the program transfer control means.
The transfer state of the microprogram stored in M3 to the programmable operation means 3 is determined, and a determination signal for controlling the content to be displayed on a display screen (not shown) is determined according to the determination result. Screen display control means 6 to be generated
And a screen display means 7 for switching output contents to the display screen based on a determination signal from the screen display control means 6 to display whether or not the program is transferred to the display screen.

In FIG. 1, reference numeral 1 denotes a video signal input terminal for inputting a supplied video signal, 4 denotes a program content input terminal for inputting the content of decoding to the program operation means 3, and 8 denotes a screen content input terminal. A video signal output terminal 10 for outputting the video signal on the display screen is a signal transfer bus.

The programmable operation means 2 is mutually connected to the RAM 3, the program content input terminal 4, and the program transfer control means 5 via the signal transfer bus 10, and is also connected to the screen display means 7. The programmable operation means 2 is an operation circuit capable of changing the processing contents, and loads the contents of the program in accordance with the load instruction output from the program transfer control means 5 and, based on the contents of the loaded program, The video signal is decoded. The program transfer control means 5 mainly uses a CPU, and outputs a determination signal as to whether or not a microprogram is loaded in the programmable operation means 2. This discrimination signal is sent to the screen display control means 6.

When a discrimination signal indicating that a microprogram is being loaded into the programmable operation means 2 is input from the program transfer control means 5 to the screen display control means 6, the screen display control means 6 reads the time from the start of the loading, and The load time (hereinafter, referred to as “load time”) is set to a preset load time (hereinafter, “load time”).
This is referred to as "set load time". ) Is determined. As a result of this determination, when the load time is longer than the set load time, the screen display control means 6 controls the control signal for displaying information indicating that the microprogram is being loaded on the display screen. And outputs this control signal to the screen display means 7. On the other hand, if the load time is shorter than the set load time, the screen display control means 6 generates a control signal for not displaying anything on the display screen, and outputs this control signal to the screen display means 7.
When a determination signal indicating that the transfer of the microprogram has been completed from the program transfer control means 5 to the programmable operation means 2 is input from the program transfer control means 6, the screen display control means 6 outputs information indicating that the transfer of the microprogram has been completed. And generates and outputs a control signal for displaying on the display screen. These control signals are sent to the screen display means 7.

The screen display means 7 is controlled by a control signal from the screen display control means 6. Specifically, when the load time is longer than the set load time, information indicating that the microprogram is being loaded is displayed on the display screen. On the other hand, if the load time is shorter than the set load time, nothing is displayed on the display screen.
When the program transfer is completed, information indicating that the transfer of the microprogram has been completed is displayed on the display screen.

Here, the operation of the television receiver will be described. The video signal input to the video signal input terminal 1 is input to the programmable operation means 2. On the other hand, the signal input to the program content input terminal 4 is supplied to the programmable operation means 2 via the signal transfer bus 10.
The data is input to the RAM 3 and the program transfer control means 5.

The program transfer control means 5 periodically detects whether or not the contents of the microprogram have changed, and in accordance with the detection result, determines whether or not the programmable operation means 2 is loading the microprogram. The determination signal is sent to the screen display control means 6.

Here, when a discrimination signal indicating that the micro program is being loaded into the programmable operation means 2 is input from the program transfer control means 5, the screen display control means 6 determines the time from the start of the loading of the micro program. Is monitored, and the load time is compared with the set load time. As a result of this comparison, if the load time exceeds the set load time, the screen display control means 6 generates a control signal for displaying on the display screen that the micro program is being loaded. Output. On the other hand, if the load time does not exceed the set load time, a control signal for not displaying anything on the display screen indicating that the micro program is being loaded is generated and output.

When a control signal is input from the screen display control means 6, the screen display means 7 sets the output terminal 8 on the display screen based on the input control signal so as to display the loading state of the microprogram. And outputs the video signal to the display screen.

Then, when the load time is longer than the set load time, as shown in FIG.
At the top of 00, after a message "Program is being transferred" is displayed, another image (image of a ship) switched from one image (image of a car) is displayed. On the other hand, when the load time is shorter than the set load time, FIG.
As shown in (a), on the display screen 100, another image (an image of a ship) switched from one image (an image of a car) is displayed without displaying transfer information. Become.

On the other hand, when a discrimination signal indicating that the transfer of the microprogram to the programmable operation means 2 has been completed is input from the program transfer control means 5, the screen display control means 6 determines that the transfer of the microprogram has been completed. Is generated and output for causing a control signal to be displayed on the display screen.

When a control signal is input from the screen display control means 6, the screen display means 7 displays information indicating that the transfer of the microprogram has been completed on the display screen based on the input control signal. For this purpose, the video signal is output to the display screen via the output terminal 8. Then, information indicating that the transfer of the microprogram has been completed is displayed on the display screen.

That is, in the first embodiment, when the microprogram to be supplied to the programmable operation means 2 is transferred, the transfer time of the microprogram is shorter than a preset time. Is not displayed on the display screen indicating that the microprogram is being transferred, and the microprogram is being transferred on condition that the transfer time of the microprogram is longer than a preset time. Is displayed on the display screen, and when the transfer of the microprogram supplied to the programmable operation means 2 is completed, the information indicating that the transfer of the microprogram is completed is displayed on the display screen. Is displayed.

In other words, by switching the contents to be displayed on the display screen in accordance with the microprogram transfer process, the user can recognize the operation state of the programmable operation means 2. Therefore, the user can be made to recognize the operation state of the system.

(Embodiment 2) FIG. 3 is a block diagram showing a circuit configuration of a television receiver according to Embodiment 2 of the present invention. Referring to FIG. 3, the television receiver according to the second embodiment is characterized in that ROM 13 in which a plurality of microprograms for defining a plurality of video decoding processing algorithms are stored in advance, and an input video signal is stored. Based on the result of the determination, a first determination signal for switching the contents of the program supplied to the programmable operation means 2 and a second determination signal for switching the display screen are generated in accordance with the determination result. Any one of the broadcast system discriminating means 14 and the microprogram stored in the ROM 13 and the program input through the external program input terminal 12 based on the first discrimination signal from the broadcast system discriminating means 14 A first selector 15 for switching to output one of the contents, and a second determination signal from the broadcast system determiner 14 Screen display control means 6 and second selection means for deciding which output should be selected from the broadcast method discrimination means 14 based on the screen display means 7. The point is that the output content to the display screen is switched based on the selected output.
Is the same as

Here, the operation of the television receiver will be described. The video signal input from the video signal input terminal 1 is supplied to the programmable operation means 2 and the broadcast system determination means 14.

The broadcast system discriminating means 14 discriminates what the input video signal is, generates a first discriminating signal, and sends the first discriminating signal to the first selecting means 15.
In the first selecting means 15, based on the first determination signal,
In order to decode the video signal, one of a microprogram stored in the ROM 13 and a program input via the external program input terminal 12 is selected, and the contents of the selected program are output. The program whose contents have been switched is output to the programmable operation means 2.

When the video signal has been switched, the broadcast system determining means 14 transmits a control signal for displaying that the video signal has been switched and a second determination signal to the second selecting means 16. Generate and output. More specifically, first, at the moment when the video signal is switched, the broadcast system determination means 1
4 indicates that the output of the second selection means 16 is the broadcast system determination means 1
A second determination signal is generated so as to be the screen display control signal of No. 4, and the second determination signal is output to the second selection means 16. At this time, a control signal indicating that the broadcast system has been switched to the display screen, that is, a switch to a broadcast system different from the previous broadcast system, is sent to the screen display means 7. Then, as shown in FIG. 4B, the message “NTSC → MUS” is temporarily displayed on the display screen 100.
After the message "E" is displayed, another image (image of the ship) switched from one image (image of the car) is displayed. As described above, when the broadcast system switching information is displayed, the output of the second selection unit 16 is switched to the output of the screen display control unit 6, and the same operation as in the above-described first embodiment is switched.

On the other hand, the broadcast system is not switched,
That is, in the case of the same broadcast system, as shown in FIG. 4A, the other screens switched from one image (car image) without displaying the broadcast system switching information on the display screen 100. (Image of the ship) will be displayed.

That is, in the second embodiment, the broadcast system is determined on the basis of the input video signal, and the content of the program supplied to the programmable operation means 2 is switched in accordance with the result of the determination. The content to be displayed is switched. Therefore, even when the broadcasting system is switched from the previous broadcasting system to a different broadcasting system, the user can be made aware of the operation state of the system.

(Embodiment 3) FIG. 5 is a block diagram showing a circuit configuration of a television receiver according to Embodiment 3 of the present invention. Referring to FIG. 5, the feature of the television receiver of the third embodiment is that channel information input terminal 21
The channel selected by the user is determined based on the channel information input via the, and according to the determination result,
A selection channel determination unit for generating a first determination signal for switching the contents of a program supplied to the programmable operation unit and a second determination signal for switching a display screen; A first selecting means 25 for switching to output one of a microprogram stored in the ROM 13 and a program input through the external program input terminal 12 based on the determination signal of A screen display control unit 16 based on a second determination signal from the selected channel determination unit 22 and a second selection unit 26 that determines which output of the selected channel determination unit 22 is to be selected. , The screen display means 7 outputs to the display screen based on the selection output from the second selection means 26. There in that is adapted to switch the contents, other configurations are the same as in the first embodiment.

Here, the operation of the television receiver will be described. The video signal input from the video signal input terminal 1 is given to the programmable operation means 2. On the other hand, the channel information input from the channel information input terminal 21 is given to the selected channel determining means 22.

The selected channel discriminating means 22 discriminates the channel selected by the user on the basis of the input channel information, generates a first discrimination signal, and outputs the first discrimination signal to the first selection signal. Send to means 25. The first selection unit 25 reads the ROM 1 based on the first determination signal so that the programmable operation unit 2 decodes the video signal.
3 and one of the programs input through the external program input terminal 12 is selected, and the contents are switched so as to output the selected program. The switched program is output to the programmable operation means 2.

When the channel is switched, the selected channel discriminating means 22 generates a control signal for indicating that the channel has been switched and a second discriminating signal to the second selecting means 16. Output. Specifically, first, at the moment when the channel is switched, the selected channel discriminating means 22 outputs the second discrimination signal so that the output of the second selecting means 26 becomes the screen display control signal of the selected channel discriminating means 22. And outputs the second determination signal to the second selection means 26. At this time, a control signal indicating that the channel has been switched to the display screen, that is, that the channel has been switched to a channel different from the previous channel, is sent to the screen display means 7. Then, information indicating that the channel has been changed is displayed on the display screen. As described above, when the channel switching information is displayed, the second selecting means 26
Is switched to the output of the screen display control means 6, and the same operation as in the above-described first embodiment is switched.

That is, in the third embodiment, when the user selects a channel by a required means, the channel selected by the user is determined based on the input channel information. Accordingly, the contents of the program supplied to the programmable operation means 2 are switched, and the contents to be displayed on the display screen are switched. Therefore, when switching from the previous channel to a different channel,
The user can be made aware of the operation state of the system.

(Embodiment 4) FIG. 6 is a block diagram showing a circuit configuration of a television receiver according to Embodiment 4 of the present invention. Referring to FIG. 5, the feature of the television receiver of the fourth embodiment is that the user can compare the broadcast system information for each channel stored in advance with the input channel information, thereby making it possible for the user. Discriminates the selected broadcasting system, and in accordance with the result of the comparison discrimination, a first discrimination signal for switching the contents of the program supplied to the programmable operation means, and a second discrimination signal for switching the display screen.
And a program stored in the ROM 13 based on the first discrimination signal from the selected broadcast method discriminating means 30 and an external program input terminal. Screen display control means 1 based on a first selection means 35 for switching to output any one of the contents of the incoming program and a second determination signal from the selected broadcast system determination means 30.
6 and a second selecting means 36 for determining which output of the selected broadcasting method discriminating means 30 is to be selected, and the screen display means 7 is provided based on the selected output from the second selecting means 36. In that the output content to the display screen is switched.
Is the same as

Here, the operation of the television receiver will be described. The video signal input from the video signal input terminal 1 is given to the programmable operation means 2. On the other hand, the channel information input from the channel information input terminal 21 is given to the selected broadcasting method discriminating means 30.
The selected broadcast system determination means 30 determines the broadcast system selected by the user by comparing the previously stored broadcast system information for each channel with the input channel information. A discrimination signal is generated, and the first discrimination signal is sent to the first selection means 35. First selection means 3
In step 5, the ROM 13 reads the video signal based on the first determination signal so that the programmable arithmetic unit 2 decodes the video signal.
Of the micro program stored in the external program input terminal 12 is selected, and the contents of the selected program are switched to be output. The generated program is output to the programmable operation means 2.

When the broadcasting system has been switched, the selected broadcasting system discriminating means 30 provides a control signal for displaying that the broadcasting system has been switched, and the second selecting means 16.
And generates and outputs a second determination signal. In particular,
First, at the moment when the broadcasting system is switched, the selected broadcasting system discriminating means 30 generates the second discriminating signal so that the output of the second selecting means 16 becomes the screen display control signal of the selected broadcasting system discriminating means 30. Then, the second determination signal is output to the second selection means 36. At this time, a control signal indicating that the broadcast system has been switched to the display screen, that is, a switch to a broadcast system different from the previous broadcast system, is sent to the screen display means 7. Then, on the display screen, the video relating to the switched broadcasting method is displayed together with the information indicating the switched broadcasting method. As described above, when the broadcast system switching information is displayed, the output of the second selection unit 36 is switched to the output of the screen display control unit 6, and the same operation as in the above-described first embodiment is switched.

FIG. 7 is a flow chart showing the flow of the operation of the selected broadcasting system discriminating means. With reference to FIG. 7, the flow of the operation of the selected broadcast system determining means 30 will be described. Referring to FIG. 7, first, the key input of the channel is compared with the current broadcast system, and it is determined whether or not a key input relating to broadcast A has been performed (step S1). Here, when it is determined that the key input related to the broadcast A has been performed, it is determined whether or not the video related to the broadcast A should be displayed on the display screen (step S2). Here, when it is determined that the key input of the channel and the current broadcasting system match each other, and it is determined that the video related to the A broadcast should be displayed on the display screen, the video related to the A broadcast is loaded without loading the program. It is displayed on the display screen (step S5). On the other hand, the key input of the channel and the current broadcasting system are different from each other.
If it is determined that the video related to the broadcast should not be displayed on the display screen, the video is loaded into the ROM 13 storing the program corresponding to the broadcast A, and then the video related to the broadcast A is displayed on the display screen ( Step S3, S
4).

If it is determined in step S1 that there is no key input related to broadcast A, it is determined whether a key input related to broadcast B has been performed (step S1).
6). Here, when it is determined that a key input related to the B broadcast has been made, it is determined whether an image related to the B broadcast should be displayed on the display screen (step S7). Here, when it is determined that the key input of the channel and the current broadcast system match each other, and it is determined that the video related to the B broadcast should be displayed on the display screen, the video related to the B broadcast is loaded without loading the program. Display on the display screen (Step S
10). On the other hand, when it is determined that the key input of the channel and the current broadcast system are different from each other and that the video related to the B broadcast should not be displayed on the display screen, the ROM 13 storing the program corresponding to the B broadcast is After the loading, the video relating to the B broadcast is displayed on the display screen (steps S8 and S9).

Thereafter, similarly, C broadcast, D broadcast...

That is, in the fourth embodiment, the broadcast system selected by the user is determined by comparing the previously stored broadcast system information for each channel with the input channel information. As a result of the comparison and discrimination, on the condition that the two match, the programmable operation means 2
The contents of the program to be supplied to the programmable operation means 2 are immediately switched, and the contents to be displayed on the display screen are switched on the condition that the contents do not match. Has become.

Therefore, even when the broadcasting system is switched from the previous broadcasting system to a different broadcasting system by the user's channel operation, the user can be made aware of the operation state of the system.

Note that the present invention is not limited to the above embodiments, and for example, the configurations of the first to fourth embodiments may be arbitrarily combined.

Of course, various design changes and modifications may be made within the scope of the present invention.

[0052]

As is apparent from the above description, according to the first and second aspects of the present invention, when a program is transferred, the transfer time of the program is shorter than a preset time. As a condition, information indicating that the program is being transferred is not displayed on the display screen, while the program is transferred on condition that the transfer time of the program is longer than a preset time. Information indicating that the program is being transferred is displayed on the display screen, and when the transfer of the program is completed, the information indicating that the transfer of the program is completed is displayed on the display screen. Can recognize the operating state of the system.

According to the third and fourth aspects of the present invention, the broadcast system is determined based on the input video signal,
In accordance with the result of this determination, the contents of the program are switched and the contents to be displayed on the display screen are switched. Therefore, even when the broadcasting system is switched from the previous broadcasting system to a different broadcasting system, the user can be notified of the system. The operation state can be recognized.

According to the fifth and sixth aspects of the present invention, the user selects a channel by a required means, thereby determining the channel selected by the user based on the input channel information. Then, according to the result of the determination, the contents of the program are switched and the contents to be displayed on the display screen are switched. Therefore, even when the previous channel is switched to a different channel, the user can be informed of the operation state of the system. Can be recognized.

According to the seventh and eighth aspects of the present invention, the user selects the information by comparing the pre-stored information on the broadcasting system for each channel with the input channel information. The broadcast system is determined, and as a result of the comparison determination, the program content is not changed on condition that both match, while the program content is switched on condition that both do not match, and on the display screen. Since the content to be displayed is switched, the user can recognize the operation state of the system even when the user switches from the previous broadcasting system to a different broadcasting system by operating the channel.

[Brief description of the drawings]

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

FIG. 2 is a diagram showing a display state of a display screen.

FIG. 3 is a block diagram showing a circuit configuration of a television receiver according to a second embodiment of the present invention.

FIG. 4 is a diagram showing a display state of a display screen.

FIG. 5 is a block diagram showing a circuit configuration of a television receiver according to a third embodiment of the present invention.

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

FIG. 7 is a flowchart showing a flow of an operation of a selected broadcasting system determination unit.

FIG. 7 is a circuit block diagram of a conventional television receiver.

FIG. 8 is a block diagram illustrating a circuit configuration of a conventional television receiver.

[Explanation of symbols]

 Reference Signs List 1 video signal input terminal 2 programmable operation means 3 RAM 4 program content input terminal 5 program transfer control means 6 screen display control means 7 screen display means 8 video signal output terminal 10 signal transfer bus 12 program external input terminal 13 ROM 14 broadcast method discrimination Means 15 First selecting means 16 Second selecting means 21 Channel information input terminal 22 Selected channel determining means 25 First selecting means 26 Second selecting means 30 Selected broadcasting method determining means 35 First selecting means 36 Second Selection means

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[Procedure amendment]

[Submission date] December 1, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Brief description of drawings

[Correction method] Change

[Correction contents]

[Brief description of the drawings]

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

FIG. 2 is a diagram showing a display state of a display screen.

FIG. 3 is a block diagram showing a circuit configuration of a television receiver according to a second embodiment of the present invention.

FIG. 4 is a diagram showing a display state of a display screen.

FIG. 5 is a block diagram showing a circuit configuration of a television receiver according to a third embodiment of the present invention.

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

FIG. 7 is a flowchart showing a flow of an operation of a selected broadcasting system determination unit.

FIG. 8 is a block diagram illustrating a circuit configuration of a conventional television receiver.

[Description of Signs] 1 Video signal input terminal 2 Programmable operation means 3 RAM 4 Program content input terminal 5 Program transfer control means 6 Screen display control means 7 Screen display means 8 Video signal output terminal 10 Signal transfer bus 12 Program external input terminal 13 ROM 14 broadcast method discriminating means 15 first selecting means 16 second selecting means 21 channel information input terminal 22 selected channel discriminating means 25 first selecting means 26 second selecting means 30 selected broadcasting method discriminating means 35 first Selection means 36 Second selection means

Claims (8)

[Claims] 1. A television signal processing execution means which is controlled by a program and executes a television signal processing, and a transfer time of the program is set in advance when transferring a program to be supplied to the television signal processing execution means. The condition that the program is being transferred is not displayed on the display screen on the condition that it is shorter than the set time, while the program transfer time is shorter than the preset time. On the condition that the program is being transferred, the program transfer display control means for displaying information indicating that the program is being transferred on the display screen, and the transfer of the program supplied to the television signal processing execution means is completed. At the end of a program transfer, which displays information on the display screen indicating that the program transfer has been completed. Television receiver comprising a control unit. 2. A storage means in which a program for preliminarily defining a video decoding algorithm is stored; and a video signal decoding processing means for decoding a supplied video signal in accordance with the program stored in the storage means. A program transfer control means for generating a control signal for controlling transfer of a program stored in the storage means to the decode processing means; and a storage means based on the control signal from the program transfer control means. Screen display content control means for determining a transfer state of the program stored in the decoding processing means to the decoding processing means, and generating a determination signal for controlling the content to be displayed on the display screen according to the determination result; , Based on the discrimination signal from the screen display content control means,
A television receiver, comprising: screen display output content switching means for switching output content to a display screen. 3. Controlled by a program,
Television signal processing executing means for executing television signal processing; video signal determining means for determining a broadcast system based on an input video signal; and the television signal according to the determination result of the video signal determining means. A switching unit for switching the contents of a program supplied to the processing execution unit and for switching the contents to be displayed on the display screen. 4. A storage means in which a program for preliminarily defining a video decoding algorithm is stored, and a video signal decoding processing means for decoding a supplied video signal in accordance with the program stored in the storage means. A program transfer control means for generating a control signal for controlling transfer of a program stored in the memory to the video signal decoding processing means; and storing the control signal based on a control signal from the program transfer control means. Screen display content control means for judging the state of transfer of the program stored in the means to the decoding processing means, and controlling the contents to be displayed on the display screen according to the judgment result; The broadcast system is determined based on the signal, and supplied to the video signal decoding processing means according to the determination result. Broadcasting system determining means for generating a first determining signal for switching the contents of the program and a second determining signal for switching the display screen, based on the first determining signal from the broadcasting system determining device, A program content switching means for switching to output one of a program stored in the storage means and a program input from the outside; and a second determination signal from the broadcast system determination means. Output selection means for deciding which output of the screen display content control means and the broadcast system discrimination means should be selected; and, based on the selected output from the output selection means, the output content to the display screen. And a screen display output content switching means for switching. 5. A television signal processing execution means which is controlled by a program and executes television signal processing, and wherein a user selects a channel by a required means, so that the channel information is inputted. Switching means for switching the content of the program supplied to the television signal processing execution means, and switching the content to be displayed on the display screen, in accordance with the result of the determination. A television receiver characterized by including: 6. A storage unit in which a program for preliminarily defining a video decoding algorithm is stored; and a video signal decoding unit for decoding a supplied video signal in accordance with the program stored in the storage unit. A program transfer control means for generating a control signal for controlling transfer of a program stored in the memory to the video signal decoding processing means; and storing the control signal based on a control signal from the program transfer control means. Screen display content control means for judging a transfer state of the program stored in the means to the decoding processing means, and controlling the contents to be displayed on the display screen according to the judgment result; The channel selected by the user is determined based on the information, and the video signal is determined according to the determination result. Selected channel determining means for generating a first determination signal for switching the contents of a program supplied to the code processing means and a second determination signal for switching the display screen; A program content switching means for switching to output one of a program stored in the storage means and an externally input program based on the determination signal; and Output selection means for determining which output should be selected from the screen display content control means and the selected channel determination means based on the determination signal of No. 2; and display based on the selected output from the output selection means. A television including a screen display output content switching means for switching output content to a screen John receiver. 7. A television signal processing execution means which is controlled by a program and executes television signal processing; broadcast information for each channel stored in advance; and input channel information. The broadcast system selected by the user is determined by the comparison. As a result of the comparison and determination, provided that the two match, the program content supplied to the television signal processing execution means is not changed. And a switching means for switching the contents of the program supplied to the television signal processing execution means and for switching the contents to be displayed on the display screen, on condition that they do not match. 8. A storage means in which a program for preliminarily defining a video decoding algorithm is stored, and a video signal decoding processing means for decoding a supplied video signal in accordance with the program stored in the storage means. A program transfer control means for generating a control signal for controlling transfer of a program stored in the memory to the video signal decoding processing means; and storing the control signal based on a control signal from the program transfer control means. Screen display content control means for judging a transfer state of the program stored in the means to the decoding processing means, and controlling contents to be displayed on the display screen according to the judgment result; By comparing the information of the broadcasting system for each channel with the input channel information, the user A first determination signal for switching the content of the program supplied to the video signal decoding processing means, and a second determination signal for switching the display screen, according to the comparison determination result. One of a program stored in the storage unit and a program input from the outside based on a first determination signal from the selected broadcast system determining unit. Any one of the screen display content control means and the selected broadcast method discriminating means based on a second discrimination signal from the selected broadcast method discriminating means. Output selection means for deciding whether or not to output, and switching output contents to the display screen based on the selected output from the output selection means. And a screen display output switching means.