JP2000050216A - Teletext receiver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely execute video recording processing of an optional program, corresponding to a revised broadcast date and time in the video recording processing of the optional program. SOLUTION: A microcomputer 18e compares start date and time information of an arbitrary program stored in a reservation program memory 18i with current date and time information measured by a timer circuit 22 to discriminate whether or not the current time is a prescribed time before a start date and time of an optional program and extracts EPG information of the optional program from a buffer memory 18d. Then the microcomputer 18e retrieves identification ID denoting the optional program from the EPG information collates program start date and time information and end date and time information, corresponding to the identification ID with start date and time information and end date and time information stored in a reservation program memory 18i, discriminates whether or not there is any change and rewrites recording contents of the reservation program memory 18i with the revised start date and time and end date and time, when the microcomputer 18e confirms the revision.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a teletext receiving apparatus capable of receiving teletext, and more particularly to a teletext receiver capable of recording a program for which timer recording has been set in response to a change in broadcast date and time (flow). It is something that can be done.

[0002]

2. Description of the Related Art Conventionally, with the digitization of television signals (from signal processing to transmission), development for multifunctional television receivers has been actively conducted. As a function of this type of television receiver, there is a function of receiving and displaying a television signal on which teletext program guide data is superimposed.

In the above-mentioned television receiver, all program guide information (hereinafter referred to as EPG (Electric Program Guide) information) by teletext is extracted from the transmitted television signal, and is temporarily stored in a buffer memory.
The television receiver then stores these stored EPGs.
By designating desired program data from the information, the designated program data is read from the buffer memory and written to the program memory for presentation. The program data stored in the presentation program memory is divided into display data and additional sound data. The display data is displayed on a screen by a presentation process using an image memory, and the additional sound data is output as sound.

By the way, in the above-mentioned television receiver,
VTR (Video Tape Recorder) for recording and reproducing information
By using a recording / reproducing device such as the one described above, it is also possible to perform timer reservation recording of an arbitrary program using the display function of EPG information. However, when there is a change in the broadcast date and time of an arbitrary program, the television receiver executes the recording process at a preset time even though the arbitrary program is not broadcast. Become. In such a case, if there is a viewer nearby, it is possible to confirm whether or not an arbitrary program is being broadcast at a set time. However, usually, there are many cases where the viewer is not near or watching the program. Therefore, in recent years, there has been a demand for a television receiver that can execute a recording process in response to a change in the broadcast date and time of a program.

[0005]

As described above, in the above-described television receiver, for example, when the broadcast date and time of an arbitrary program for which timer reservation recording has been set is changed,
Even if an arbitrary program is not being broadcast, the recording process will be executed at a preset time, and if there is no viewer nearby, whether any program is being broadcast at the set time There is an inconvenience that it is not possible to confirm whether or not this is the case.

[0006] Therefore, an object of the present invention is to provide a timer-recording program for an arbitrary program, even if there is a change in the broadcast date and time of the arbitrary program, to reliably correspond to the changed broadcast date and time. It is an object of the present invention to provide a teletext receiving device capable of executing a recording process of an arbitrary program.

[0007]

SUMMARY OF THE INVENTION The present invention provides a character broadcast having a program guide information display function of extracting, storing, and selectively displaying program guide information within a specified period superimposed on a television signal. It is intended for receiving devices.

In order to achieve the above object, a timer means for measuring the current date and time, and when an arbitrary program is selected from program guide information by an external operation of a viewer, identification information of the arbitrary program and Storage means for storing the start date and time information and end date and time information of the program, and first comparing means for comparing the start date and time information of any program stored in the storage means with the current date and time information measured by the timer means And a program for retrieving identification information indicating an arbitrary program stored in the storage means from the program guide information when the first comparing means detects that a predetermined time before the start date and time of the arbitrary program is detected. Information searching means, and when the program information searching means searches for identification information indicating a corresponding arbitrary program, start date and time information and end date and time information of a program corresponding to the identification information are recorded. A second comparing means for comparing the start date and time information and the end date and time information of an arbitrary program stored in the means, and detecting a change in the start date and time information and the end date and time information based on the comparison result by the second comparing means. In this case, rewriting means for rewriting the start date and time information and the end date and time information of an arbitrary program stored in the storage means to the changed start date and time information and end date and time information.

According to this configuration, the start date and time information of an arbitrary program specified from the program guide information by the viewer's external operation is compared with the current date and time information, so that a predetermined time of the start date and time of the arbitrary program is determined. You can judge whether it is before,
Based on the determination result, the program guide information is extracted from the currently received television signal, and the identification information indicating the arbitrary program is searched and collated from the program guide information. It is possible to determine whether or not there is a change in the end date and time. If a change is confirmed based on the result of the determination, the start and end date and time are rewritten with the changed start date and time.

For this reason, even if the broadcast date and time of an arbitrary program is changed when the viewer has performed timer recording of an arbitrary program, the arbitrary date and time of the arbitrary program can be reliably changed in accordance with the changed broadcast date and time. Can be performed by a recording / reproducing device such as a VTR.

Further, according to the present invention, in the above object, there is provided timer means for measuring the current date and time, and one tuner capable of selecting and setting at least one channel. The television signal of the channel selected by the tuner is provided. Receiving means for receiving, and when an arbitrary program is selected from the program guide information by an external operation of the viewer, storage for storing identification information of the arbitrary program, start date / time information and end date / time information of the program, and a channel. Means, first comparing means for comparing start date and time information of an arbitrary program stored in the storage means with current date and time information measured by the timer means, and starting of the arbitrary program by the first comparing means. A channel for controlling the tuning of a tuner so that when a predetermined time before the date and time is detected, the channel corresponds to an arbitrary program. Station control means for extracting program guide information from a television signal received by a tuner whose channel is controlled by the channel selection control means and indicating an arbitrary program stored in the storage means from the program guide information Program information search means for searching for identification information; and when the program information search means searches for identification information indicating a corresponding program, start date / time information and end date / time information of a program corresponding to the identification information; A second comparing unit that compares the start date and time information and the end date and time information of an arbitrary program stored in the storage unit, and changes the start date and time information and the end date and time information based on the comparison result by the second comparing unit. When it is detected, the start date and time information and the end date and time information of any program stored in the storage unit are replaced with the changed start date and time information and end date and time information. E it is obtained by such and means.

According to this configuration, the start date and time information of an arbitrary program designated from the program guide information and the current date and time information by the viewer's external operation are compared, so that the predetermined time of the start date and time of the arbitrary program is determined. You can judge whether it is before,
Based on the result of the determination, the tuner is controlled to tune to a channel corresponding to an arbitrary program, and the program guide information of the selected channel is extracted to indicate an arbitrary program from the program guide information. By searching and collating the identification information, it is possible to determine whether there is a change in the start date and time and the end date and time of any program, and when the determination result confirms the change, the changed start date and time and It is rewritten to the end date and time. For this reason, the same effect as the above invention can be obtained.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a television receiver provided with a teletext receiver according to an embodiment of the present invention.

That is, the video signal received by the antenna 11 and selected by the tuner 12 is supplied to the video switching processing circuit 13. The video switching processing circuit 13 selectively demodulates and outputs the video signal from the tuner 12 and the video signal supplied to the terminal 15 according to an instruction from the main controller 14. The video signal demodulated by the video switching circuit 13 is supplied to the color cathode ray tube 17 via the output switching circuit 16 and is displayed on the image.

The video signal output from the video processing circuit 13 is supplied to a character multiplex decoder 18. The text multiplex decoder 18 can extract and process text broadcast data related to a program multiplexed during a vertical blanking period of a video signal, for example. The character multiplex decoder 18 operates according to an instruction from the main controller 14. The output signal obtained by the character multiplex decoder 18 is supplied to the color cathode ray tube 17 via the output switching circuit 16 to be displayed as an image.

In the above-mentioned television receiver, the channel selection of the tuner 11 is controlled by the main controller 14 in accordance with the channel operation from the remote controller 19 during a normal operation, and the video data is transmitted to the output switching circuit 16. And switching between text broadcast data including EPG. When the viewer performs an input operation for displaying characters and the like using the input device 20, the character multiplex decoder 1
8 reads input operation information from the input device 20 and performs processing based on the read information content. Simultaneously with this processing, the character multiplex decoder 18 causes the color cathode ray tube 17 to display characters and the like based on the input operation information. In addition, the character multiplex decoder 18
TR21 is connected, and based on the information content, VTR
An operation instruction is issued to 21. The character multiplex decoder 1
8 is connected to a timer circuit 22 for measuring the current date and time.

In each of the above circuits, the antenna 11,
Tuner 12, video processing circuit 13, output switching circuit 1
4. The color cathode ray tube 15, the character multiplex decoder 16, and the main controller 17 constitute a teletext receiver according to the present invention.

FIG. 2 is a circuit block diagram showing the structure of the character multiplex decoder 18. As shown in FIG. In FIG. 2, a video signal output from the video switching processing circuit 13 is supplied to an input terminal 18a. Then, the EPG information superimposed on the video signal becomes a digital binary signal by being sliced at a predetermined slice level in the waveform shaping circuit 18b. This digital binary signal is supplied to the data acquisition circuit 18c.

The data acquisition circuit 18c extracts a digital binary signal as EPG information for each data line,
The data is supplied to the buffer memory 18d. Buffer memory 18
d represents all the EPs extracted by the data acquisition circuit 18c.
The G information is temporarily stored. The microcomputer 18e controls the timing of extracting the data line in the data acquisition circuit 18c and controls the data transfer from the data acquisition circuit 18c to the buffer memory 18d.

An input device 20 is connected to the microcomputer 18e. The input device 20 includes a key for designating a program number using a numeric keypad or the like. Further, the input device 20 displays code data (000X) and moves a cursor displayed in a program number portion on the screen.
It has a cursor movement key and a cursor execution key for giving a predetermined input to the program number under cursor display, that is, code data when the program displayed by the cursor is a desired program.

The microcomputer 18e transfers the EPG information of the teletext stored in the buffer memory 18d to the display image memory 18g via the display control circuit 18f according to an instruction from the input device 20.

The display control circuit 18f includes an image memory 18g.
The display data written to the terminal is read and output terminal 18
h, R, G, B signals are obtained and sent to the color cathode ray tube 17 described above. As shown in FIG. 3, the display of the EPG information is presented on a screen with a program name, a broadcast start date and time, an end date and time, and a channel, and the additional sound data is output as audio.

The microcomputer 18e includes:
The reserved program memory 18i timer circuit 22 is connected to each. When an arbitrary program is selected from the EPG information by the input device 20, the reserved program memory 18i stores program designation data including the identification ID of the arbitrary program, the start date and time of the program, the end date and time, and the channel.

The microcomputer 18e includes a time information comparing unit 18e1 and a channel selection control unit 1
8e2 and a flow correspondence recording processing means 18e3. The time information comparing unit 18e1 compares the start date and time information of the program stored in the reserved program memory 18i with the current date and time information measured by the timer circuit 22,
For example, it is determined whether it is one minute before the broadcast start date and time of an arbitrary program. When the time information comparing unit 18e1 determines that the current time is one minute before the broadcast start date and time, the channel selection control unit 18e2 sets the channel selected by the tuner 11 to an arbitrary program stored in the reserved program memory 18i. Main controller 14
Give instructions to

The flow-corresponding recording processing means 18e3 extracts from the buffer memory 18d EPG information corresponding to the channel selected and controlled by the channel selection control means 18e2, and uses this EPG information to store any EPG information stored in the reserved program memory 18i. Is searched for the identification ID indicating the program. Then, when an identification ID indicating an arbitrary program is searched, the start date and time and the end date and time of the searched program are compared with the start date and time and the end date and time of the arbitrary program stored in the reserved program memory 18i. . Thereafter, the flow recording processing means 18
e3 determines, based on the comparison result, whether or not the start date and time and the end date and time of an arbitrary program have been changed, and when the change is detected, the start date and time and the end of the arbitrary program stored in the reserved program memory 18i. Rewrite the date and time with the changed start date and time and end date and time.

The microcomputer 18e has a V
The TR 21 is connected via an interface port (not shown), and controls the operation of the VTR 21 based on the program designation data updated by the flow correspondence recording processing means 18e3.

Next, according to one embodiment of the present invention, V
The registration processing operation and the pre-recording processing operation of the timer reservation recording of the TR 21 will be described. FIG. 4 is a flowchart for explaining the processing operation of the microcomputer 18e at the time of timer recording reservation.

First, the microcomputer 18e displays a current / next program guide table as EPG information on a display screen as shown in FIG. 3 (step S101). If it is determined in step S102 that the remote controller 19 or the input device 20 determines that there is an input for registering timer recording for any program indicated in the current / next program guide table (YES), the microcontroller is activated. The computer 18e recognizes the channel, the start date and time, the end date and time, and the program name of the input program (step S10).
3). Here, when the program for which the timer reservation recording is set is recognized, the microcomputer 18e issues an instruction to the main controller 14 to select a channel corresponding to the registered program (step S).
104).

Next, the microcomputer 18e extracts teletext data of a channel corresponding to the registered program from the buffer memory 18d, and determines whether or not there is EPG information (step S105). If there is EPG information (YES), the microcomputer 18e transfers the EPG information to the image memory 18g and displays it on the screen (step S106), and further searches the EPG information for a registered program (step S106). Step S107), the identification ID of this program is stored in the reserved program memory 1
8i (step S108). Note that the search process in step S107 may be such that the viewer searches the EPG information displayed on the display screen for an arbitrary program using the remote controller 19 or the input device 20, and the microcomputer 18e automatically searches the EPG information. Any program may be searched.

Further, in the above step S105,
When it is determined that there is no EPG information (NO), the microcomputer 18e recognizes that there is no EPG information (step S109), and shifts to the process of step S102.

FIG. 5 is a flowchart for explaining the pre-recording operation of the microcomputer 18e.
First, the microcomputer 18e determines whether or not program designation information to be subjected to timer reserved recording is stored in the reserved program memory 18i (step S20).
1) If it is stored (YES), the start date and time information of the program is extracted (step S202). And
The microcomputer 18e compares the extracted start date and time information with the current date and time information measured by the timer circuit 22, and determines whether or not it is one minute before the start of recording based on the comparison result ( Step S203).

Here, if it is determined that the recording is one minute before the start of recording (YES), the microcomputer 18e
Extracts the EPG information of the channel corresponding to the program from the buffer memory 18i (step S204), checks the identification ID of the program to be recorded from the EPG information, and changes the start date and time and the end date and time of the program. It is checked whether or not there is any, and when the change is confirmed, the start date and time and the end date and time of an arbitrary program stored in the reserved program memory 18i are updated (step S205).

Next, the microcomputer 18e issues an instruction to the main controller 14 to select a channel corresponding to an arbitrary program (step S206),
The teletext data of the channel is extracted again from the buffer memory 18i to determine whether or not there is EPG information (step S207). Here, when the EPG information is detected (YES), the microcomputer 18e
Searches the EPG information for an identification ID indicating a program to be recorded again (step S208),
After confirming D, it is confirmed whether there is a change in the start date and time and the end date and time of the program (step S209). If there is a change (YES), the identification ID setting of the program and the start date and time and the end date and time are checked. Update is performed (step S210),
If there is no change (NO), the process directly proceeds to the recording process. If no EPG information is detected in step S207 (NO), the microcomputer 1
8e recognizes that there is no EPG information (step S21).
1) Perform normal timer recording processing.

By executing the processing operations as described above, the microcomputer 18e can cause the VTR 21 to accurately execute the recording processing of an arbitrary program. The microcomputer 18e performs power-on control of the VTR 21 when the recording start date and time is 15 seconds before, and performs the recording start control of the VTR 21 when the recording start date and time is 5 seconds before. If the recording end date and time is 5 seconds later, the VT
The recording stop control of the R21 is performed, and when the recording end date and time is 10 seconds later, the power-off control of the VTR 21 is performed.

As described above, according to the above embodiment,
The microcomputer 18e has a reserved program memory 18i.
Is compared with the current date and time information measured by the timer circuit 22 to determine whether it is a predetermined time before the start date and time of the arbitrary program, Based on this determination result, the EPG information of the corresponding channel of the arbitrary program is extracted from the buffer memory 18d. The EPG information is searched for an identification ID indicating an arbitrary program, and the start date and time information and the end date and time information of the program corresponding to the identification ID are compared with the start date and time information and the end date and time information stored in the reserved program memory 18i. By doing so, it is possible to determine whether or not the start date and time and the end date and time have been changed. If the determination result indicates that the change has been made, the recorded content of any program in the reserved program memory 18i is changed to the changed start date and time. And the end date and time.

For this reason, even if the broadcast date and time of an arbitrary program is changed when the viewer is performing timer recording of an arbitrary program, the arbitrary date and time of the arbitrary program can be reliably changed in accordance with the changed broadcast date and time. Can be recorded. Further, the present invention can be applied to a case where an arbitrary program is suspended from broadcasting.

In the above embodiment, the example of the program guide display as shown in FIG. 3 has been described. However, as shown in FIG. 6, the identification ID of the recognized program may be displayed.

Further, in the above embodiment, the tuner 1
Although the example of extracting the EPG information of the channel selected by 2 has been described, the EPG information superimposed on the video signal supplied to the terminal 15 may be extracted, and two or more tuners may be used. E for two or more channels
PG information may be extracted. In this case, in the double window display, it is possible to display EPG information on one screen and display an image on the other screen.

In addition, the configuration of the television receiver and the character multiplex decoder, the procedure for confirming the change of the broadcast date and time of the program to be recorded, and the like can be variously modified and implemented without departing from the gist of the present invention. .

[0040]

As described in detail above, according to the present invention,
When timer recording of an arbitrary program is performed, even if there is a change in the broadcast date and time of the arbitrary program, characters that can reliably execute recording processing of the arbitrary program in accordance with the changed broadcast date and time A broadcast receiving device can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a television receiver to which an embodiment of a teletext receiving apparatus according to the present invention is applied.

FIG. 2 is a block diagram showing a specific configuration of the character multiplex decoder shown in FIG. 1;

FIG. 3 is an exemplary view showing a display example of EPG information in the embodiment.

FIG. 4 is an exemplary flowchart for explaining the processing operation of the microcomputer at the time of timer recording reservation according to the embodiment;

FIG. 5 is an exemplary flowchart illustrating a pre-recording operation of the microcomputer according to the embodiment;

FIG. 6 is a view showing another display example of EPG information in the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Antenna, 12 ... Tuner, 13 ... Video switching processing circuit, 14 ... Main controller, 15 ... Terminal, 16 ... Output switching circuit, 17 ... Color cathode ray tube, 18 ... Character multiplex decoder, 19 ... Remote control device, 20 ... Input device, 21 VTR, 22 timer circuit, 18b waveform shaping circuit, 18c data acquisition circuit, 18d buffer memory, 18e microcomputer, 18e1 time information comparison means, 18e2 channel selection control means, 18e3: Flowable recording processing means; 18f: Display control circuit; 18g: Image memory; 18i: Reserved program memory.

Claims (4)

[Claims] An apparatus having a program guide information display function for extracting, storing, and selectively displaying program guide information within a specified period superimposed on a television signal, wherein the timer measures a current date and time. Means for storing, when an arbitrary program is selected from the program guide information by a viewer's operation, program designation information including identification information of the arbitrary program, start date / time information and end date / time information of the program; Means, first comparing means for comparing the start date and time information of an arbitrary program stored in the storage means with the current date and time information measured by the timer means, and the first comparing means A program information retrieving means for retrieving identification information indicating an arbitrary program stored in the storage means from the program guide information when it is detected that the program information is a predetermined time before the start date and time; When the identification information indicating an arbitrary program is retrieved by the means, the start date / time information and the end date / time information of the program corresponding to the identification information, and the start date / time information and the end date / time of the arbitrary program stored in the storage means Second comparing means for comparing the information with the information; change determining means for determining whether or not the start date and time information and the end date and time information of an arbitrary program have been changed based on the result of comparison by the second comparing means; When a change in the start date / time information and the end date / time information is detected based on the determination result by the determination unit, the start date / time information and the end date / time information of any program stored in the storage unit are replaced with the changed start date / time information. And a rewriting means for rewriting to end date and time information. 2. A connecting means for connecting a program recording device for executing a program recording process based on start date and time information and end date and time information of an arbitrary program, based on program designation information updated by the rewriting means. 2. A teletext receiving apparatus according to claim 1, further comprising means for controlling the operation of said program recording apparatus via said connecting means. 3. An apparatus having a program guide information display function for extracting, storing, and selectively displaying program guide information of each channel within a specified period superimposed on a television signal, comprising: Timer means for measuring the number of channels, at least one tuner capable of selecting and setting a channel, receiving means for receiving a television signal of a channel selected by the tuner, and When an arbitrary program is selected, storage means for storing identification information of the arbitrary program, start date / time information, end date / time information of the program, and program designation information including a channel; First comparing means for comparing the start date and time information of the program with the current date and time information measured by the timer means; When it is detected that the time is a predetermined time before the start date and time, channel tuning control means for tuning and controlling the tuner so as to be a channel corresponding to an arbitrary program, and the channel tuning control means Program information search means for extracting program guide information from a television signal received by a tuner controlled by tuning, and searching for identification information indicating an arbitrary program stored in the storage means from the program guide information; When identification information indicating an arbitrary program is searched by the program information search means, start date and time information and end date and time information of the program corresponding to the identification information, and start date and time of the arbitrary program stored in the storage means Second comparing means for comparing the information and the end date and time information, and the start date and time information and the end date and time of an arbitrary program based on the comparison result by the second comparing means. Change determination means for determining whether or not the information has been changed; and when a change in the start date and time information and the end date and time information is detected based on the determination result by the change determination means, an arbitrary program stored in the storage means is changed. A teletext receiving apparatus comprising: rewriting means for rewriting start date / time information and end date / time information with changed start date / time information and end date / time information. 4. A connecting means for connecting a program recording device for executing a program recording process based on start date and time information and end date and time information of an arbitrary program, based on program designation information updated by the rewriting means. 4. The teletext receiving apparatus according to claim 3, further comprising: means for controlling the operation of the program recording apparatus via the connection means.