JPH05316461A - Television broadcasting system and its receiver - Google Patents

Abstract

PURPOSE:To efficiently change a reserved broadcasting program by automati cally changing a reservating state by broadcasting information on changing a program by character broadcasting and automatically changing the reservation time for the program in accordance with the result of detecting the change of the reserved program at the side of reception. CONSTITUTION:At the time of changing a program scheduled to broadcast, each broadcasting station broadcasts information on the change at a prescribed page of character broadcasting, which is previously regulated. In this case, in order to easily identify the characters, a colon is used between an hour and a minutes and swuang dash is used between starting/finishing times. Then, at the time of judging there is a program ID reserved by a timer controller 13 and changing not the time but the content of the program, its reservation is erased from RAM 22 and a new reservation program is given. Next, at the time of changing the time the starting/finishing times of recording are changed into those of after changing.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television broadcasting system and a television receiving apparatus suitable for use in, for example, video recording of a predetermined broadcast program in a video tape recorder.

[0002]

2. Description of the Related Art A video tape recorder usually has a reservation function, and by making this reservation, a program broadcast from a predetermined time on a predetermined channel can be automatically recorded. There is.

[0003]

However, after making a recording reservation for a predetermined program, the broadcast start time of the program may change. For example, for a program scheduled to be broadcast after a baseball broadcast, the broadcast start time may be sequentially delayed if the baseball broadcast is extended. Conventionally, when the broadcast start time is delayed in this way, there is a problem that a part of the baseball broadcast is recorded and the recording is stopped in the middle of the reserved program unless the recording reservation is reset. ..

The present invention has been made in view of such a situation, and it is intended to ensure that a predetermined program can be reserved and recorded even if the broadcast schedule is changed.

[0005]

According to the television broadcasting system of the present invention, a broadcasting station sends out a video signal of a predetermined program and at the same time sends change information of the program by character broadcasting, and the receiving side sends the program. When the recording is reserved, the teletext is received and the recording operation of the program is controlled according to the change information of the program.

The television receiver of the present invention is
Step S11 as a recording means for recording a predetermined program on a predetermined channel, step S1 as a reservation means for reserving recording of a program, and step S2 as a receiving means for receiving a character broadcast of the channel at a predetermined cycle.
And step S4 as a detection means for detecting change information of the program from the text broadcast, and step S8 as a control means for controlling the reservation in step S1 corresponding to the detection result of step S4. To do.

[0007]

In the television broadcasting system having the above structure,
Program change information is broadcast by teletext. Therefore, it becomes possible to change the reservation state from this teletext.

Further, in the television receiver having the above structure, the change of the reserved program is detected from the character broadcast.
Therefore, the reserved time of the program can be changed according to the detection result.

[0009]

1 is a block diagram showing the configuration of an embodiment of a television receiving apparatus of the present invention. An antenna 1 is connected to the video tape recorder (VTR) 2 so as to receive a radio wave broadcast by a broadcasting station (not shown). The VTR 2 includes a television tuner 11, a character signal decoder 12, a timer controller 13, a VTR mechanical controller 14, operation keys 15, and an infrared remote control light receiving circuit 16.

The television tuner 11 demodulates a signal of a channel of a predetermined broadcasting station from the signal input from the antenna 1 and outputs the demodulated output to the character signal decoder 12 and the VTR controller 14. VTR mechanical controller 14
In addition to having a CPU 31, a RAM 32 and a ROM 33, a video signal is recorded and reproduced on a magnetic tape via a mechanism (not shown). Character signal decoder 1
Reference numeral 2 detects a character signal from the signal input from the television tuner 11, and outputs the detected character data to the timer controller 13. The timer controller 13 is a CPU
It has a RAM 21, a RAM 22 and a ROM 23, and controls the operations of the television tuner 11, the character signal decoder 12 and the VTR mechanical controller 14.

The operation key 15 includes a head cut prevention mode switch 41, a CM cut mode switch 42, and other keys, and is operated when a predetermined command is input to the timer controller 13. The infrared remote control light receiving circuit 16 receives the infrared light from the infrared remote control 17,
A signal corresponding to this is output to the timer controller 13. By operating the infrared remote controller 17, it is possible to output to the timer controller 13 the same command as when the operation key 15 is operated.

Next, referring to the flowchart of FIG.
The operation will be described. First, in step S1, the operation key 15 or the infrared remote controller 17 is operated to reserve recording of a predetermined program on a predetermined channel. The recording reservation of this program is the broadcast channel,
It is performed by inputting the broadcast start time and the broadcast end time. The reservation data is R of the timer controller 13.
It is stored in the AM 22.

FIG. 3 shows data stored in the RAM 22. In this embodiment, a program (reservation number 0) broadcast from 21:00 to 21:54 on the first channel on the 16th, and 23:00 to 23:30 on the first channel on the 16th. The program (reservation number 1) broadcast up to is scheduled to start recording at the broadcast start time and end at the broadcast end time. The broadcast start time is also stored as the program ID.

In this way, the reservation inputs the broadcast start time and the end time, but when the head cut prevention mode switch 41 is operated, the recording start time is slightly before the broadcast start time (for example, one minute before). The time is stored. For example, in the case of the program with reservation number 1, the recording start time is 20:59. As the recording end time, a time slightly after the broadcast end time (for example, one minute later) is stored. For example, in the case of the program with reservation number 1, 21:55 is the recording end time.

On the other hand, when the CM cut mode switch 42 is operated, a time slightly after the broadcast start time (for example, one minute later) is stored as the recording start time. For example, in the case of the program with reservation number 1, 21:01 is the recording start time. As the recording end time, a time slightly before the broadcast end time (for example, one minute before) is stored. For example, in the case of the program with reservation number 1, 21:53 is the recording end time.

However, in any of the modes, the scheduled broadcast start time is set as the program ID.

Next, in step S2, the timer controller 13 performs a time counting operation and controls the television tuner 11 so that the reserved channel is selected every predetermined period (for example, every one minute). Then, in step S3, the timer controller 13 controls the television tuner 11 to select the program change information page of the character broadcast, and further controls the character signal decoder 12 to read the character string data.

That is, when changing a program scheduled to be broadcast, each broadcasting station broadcasts the change information on a predetermined page (eg, page 999 #) of the teletext. FIG. 4 shows an example of a screen in which information on a changed broadcast schedule of a program is transmitted by text broadcasting. In this embodiment, the program (drama) scheduled to be broadcast from 21:00 to 21:54 (the program with reservation number 1) is changed to the broadcast from 21:30 to 22:24. There is.

A colon (:) is used as an identifier between the hour and the minute and a wavy line (-) is used as the identifier between the start time and the end time so that the characters can be easily identified. Further, an arrow (→) is used as an identifier for the delimiter before and after the change. A program ID is used as a program identifier. The above is commonly agreed in advance at each broadcasting station.

In step S4, the timer controller 13 determines from the data input from the character signal decoder 12 whether or not there is a reserved program ID at the beginning of the third and subsequent lines. As shown in FIG. 4, since the title is displayed on the upper two lines of the screen, the program ID is detected from the third line onward.

When it is determined in step S4 that there is a reserved program ID, the process proceeds to step S5, and it is determined whether or not it is time change information. If the time is not changed, the process proceeds to step S6, and it is determined whether the program content is changed. If the program content (also sent by text broadcasting) is changed, for example, if the drama is changed to news, the process proceeds to step S7, the reservation is deleted from the RAM 22 (FIG. 3), and the reservation number Are sorted and a new reservation number is given. If it is determined in step S6 that the program content has not been changed, the process returns to step S2 as in the case where the process of step S7 ends.

In this embodiment, step S
In FIG. 7, the recording reservation is canceled when the program content is changed, but it is also possible to record the recording as it is.

When it is determined in step S5 that the time has been changed, the process proceeds to step S8, and the recording start time and end time are changed to the changed start time and end time. Figure 5
In this way, the recording start time and end time of the program with reservation number 0 shown in FIG. 3 corresponding to the teletext of FIG.
The changed time is shown at 21:30 and 22:24, respectively. However, since the initial broadcast start time (2100) is the program ID, it is not changed even if the broadcast time is changed.

Since this processing is performed every minute, when a further change is made thereafter, as shown in FIG. 6, the latest change information is recorded in the latest change information as shown in FIG. The time is changed.

Next, in step S9, it is determined whether or not recording is in progress. If not in progress, processing proceeds to step S10.
The current time is compared with the recording start time. If they do not match, the process returns to step S2. If they match, the process proceeds to step S11, and recording is started. That is, the timer controller 13 is connected to the TV tuner 11 and V
The TR mechanical controller 14 is controlled to receive the program of the reserved channel and record it on the magnetic tape. Then, it returns to step S3.

If it is determined in step S9 that recording is in progress, the process proceeds to step S12, and the current time is compared with the recording end time. If they do not match, the process returns to step S2. When both match, the process proceeds to step S13 and the recording operation is ended. That is, the timer controller 1
3 is a TV tuner 11 and a VTR mechanical controller 14
Control to stop the reception of the program of the reserved channel and stop the recording operation of the magnetic tape. Next, in step S14, the data of the reservation number for which recording has been completed is cleared and the reservation data is sorted. After that, step S
Return to 2.

[0027]

As described above, according to the television broadcasting system of the present invention, since the program change information is broadcast by the character broadcast, the reservation state can be automatically changed from the character broadcast. It will be possible.

Further, according to the television receiver of the present invention, since the change of the reserved program is detected from the character broadcast, the reserved time of the program can be automatically changed according to the detection result. It will be possible.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a video tape recorder to which a television receiving device of the present invention is applied.

FIG. 2 is a flowchart illustrating the operation of the embodiment of FIG.

FIG. 3 is a diagram illustrating data stored in a RAM 22 in the embodiment of FIG.

FIG. 4 is a diagram showing an example of a program change message by text broadcasting.

FIG. 5 is a diagram for explaining how to change the recording start time and end time in response to the message of FIG.

FIG. 6 is a diagram showing another example of a message for changing a program by teletext.

FIG. 7 is a diagram for explaining how to change the recording start time and end time in response to the message of FIG.

[Explanation of symbols]

 1 Antenna 2 Video Tape Recorder 11 TV Tuner 12 Character Signal Decoder 13 Timer Controller 14 VTR Mechanical Controller 15 Operation Keys 16 Infrared Remote Control Receiver 17 Infrared Remote Control

Claims (2)

[Claims] 1. The broadcasting station sends out a video signal of a predetermined program and at the same time sends change information of the program by character broadcasting, and when the receiving side reserves the recording of the program, the character broadcasting is performed. A television broadcasting system characterized by receiving and controlling a recording operation of the program in accordance with change information of the program. 2. A recording means for recording a predetermined program on a predetermined channel, a reservation means for reserving the recording of the program, a receiving means for receiving a character broadcast of the channel at a predetermined cycle, and from the character broadcast. A television receiving device comprising: a detection unit that detects the change information of the program; and a control unit that controls the reservation unit corresponding to the detection result of the detection unit.