JPH0418877A - Timer picture recording device - Google Patents

Abstract

PURPOSE:To prevent the imperfect picture recording or the useless picture recording of a program by changing automatically recording reservation time set beforehand or canceling automatically a recording reservation according to a situation such as the change of the broadcasting time or the suspension, etc., of the program desired to record. CONSTITUTION:A broadcasting means broadcasts the first identification signal (a) of single frequency to show the change of the broadcasting time of the program and the second identification signal (b) of the single frequency different from the first identification signal (a) to show the suspension of the broadcasting of the program by multiplexing 12 them to a television signal (c) at a condition that the broadcasting time of the program is changed and at the condition that the broadcasting of the program is suspended. On the other hand, at a receiving side, the change of the recording reservation time set beforehand and the cancellation of a recording schedule are executed automatically according to the first and the second identification signals (a),(b). Thus, the imperfect picture recording or the useless picture recording of the program can be prevented.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Field of Industrial Application) This invention is capable of automatically changing a preset recording reservation time according to circumstances such as changing or canceling a program's broadcast time. This invention relates to a timer recording device.

(Prior Art) As is well known, for example, VTR (video tape recorder)
With image recording and playback equipment such as, you can automatically record the program you want by setting the broadcast date, start time, end time, broadcast channel, etc. of the program you want to record in advance and making a recording reservation. It is equipped with a timer recording function that can be used.

However, with the conventional timer recording function, if the program scheduled for recording is extended and its end time is later than the set time, or the program before the program scheduled for recording is extended, the broadcast of the program scheduled for recording may occur. When the start time is changed to a later time, a problem arises in that it becomes impossible to record a portion other than the preset recording reservation time. Further, even if the broadcast of a program reserved for recording is canceled, there is also the problem that unnecessary recording is performed according to the reserved contents.

(Problems to be Solved by the Invention) As described above, with conventional timer recording means, when the broadcast time of a program desired to be recorded is changed or the broadcast is cancelled, the program may be incompletely recorded or wasted. However, there is a problem in that recording is performed in a manner that is difficult to record.

Therefore, this invention was made in consideration of the above circumstances, and it automatically changes the preset recording reservation time or makes a recording reservation in accordance with the situation such as a change in the broadcast time of the program desired to be recorded or the cancellation of the broadcast. To provide an extremely good timer recording device capable of canceling a program and preventing incomplete or wasteful recording of a program.

[Structure of the Invention] (Means for Solving the Problems) A timer recording device according to the present invention includes a first identification signal of a single frequency indicating a change in the broadcast time of a program, and a first identification signal indicating a cancellation of the broadcast of a program. identification signal and a second identification signal of a different single frequency, and when the broadcasting time of a program is changed or the broadcasting of a program is cancelled, the first and second identification signals are added to the television signal. broadcasting means for frequency multiplexing and broadcasting the identification signals of , and a preset recording reservation time based on first and second reminder signals obtained by receiving the television signal broadcast by the broadcasting means; and a receiving means for automatically changing the recording reservation and canceling the recording reservation.

(Function) According to the above configuration, the first and second identification signals indicating a change in the broadcast time of the program and the cancellation of the broadcast of the program are frequency-multiplexed onto the television signal and broadcast, and the receiving side receives the first and second identification signals. The preset recording reservation time is automatically changed and the recording reservation is canceled based on the second identification signal, thereby preventing incomplete or wasteful recording of the program. I can do it.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings. First, FIG. 1(a) shows the configuration of the broadcasting station. In other words, the input terminal 11 in the figure is NTSC.
A television signal C compatible with the standard is being supplied. The television signal C supplied to this human power terminal 11 is supplied to a signal multiplexing circuit 12, and a change identification signal a1 indicating a change in broadcast time is supplied to an input terminal 13.
The cancellation identification signal indicating the cancellation of the broadcast supplied to the terminal 4 is selectively frequency multiplexed, and is taken out via the output terminal 15 and provided for broadcasting.

In this case, the change identification signal a and the cancellation identification signal
None of these are used in current television broadcasting.
For example, single frequency signals of 300 MHz and 350 MHz are used, and when there is a change in broadcasting time or a cancellation of broadcasting, they are frequency multiplexed into the television signal a and broadcast at the respective timings to be described later.

Next, FIG. 1(b) shows the configuration of the receiving side (VTR side). That is, reference numeral 16 in the figure is a human power terminal, to which the television signal a+b+c frequency-multiplexed with the change identification signal a and the cancellation identification signal are supplied. The television signal a+b+c supplied to this input terminal 16 is BP
After being supplied to F (band pass filter) 17 and removing the change identification signal a and the abort identification signal A, the output terminal 1
8 and recorded on a tape (not shown) or on a CRT.
(Cathode Ray Tube) is used for image display.

Further, the television signal a+b+c supplied to the input terminal 16 is converted into a change identification signal a by the BPFs 19 and 20.
and the abort identification signal are detected and supplied to the microcomputer 21.

The microcomputer 21 determines whether to change the broadcast time of the program or cancel the broadcast based on the input change identification signal a and cancellation identification signal A, and changes the contents of the memory 22 in which the recording reservation contents are written. , for example, change the recording reservation time, cancel the recording reservation, etc.

Here, using the example shown in FIG. 2, the operation when there is a change in broadcast time will be described. That is, in FIG. 2, for the broadcast schedule of programs A, B, and C as shown in FIG. 2(a), recording reservation 1 and recording reservation 1 for recording program A are shown in FIG. 2(b). Recording reservation 2 for recording program C
is set on the VTR, the actual broadcast time of program A is extended, and the subsequent program B is broadcast as shown in FIG.

This shows the case where the broadcast times of C are moved back.

In this case, on the broadcasting station side, as shown in Figure 2(c),
The change identification signal a is frequency-multiplexed on the television signal of the program A shortly after the extended broadcast of the program starts, and the multiplexing of the change identification signal a is interrupted at the same time as the actual broadcast of the program A ends. Also, programs B and C that follow program A are program B.

Program B begins a little before the actual broadcast start time of C.

The change identification signal a is frequency-multiplexed onto the television signal of C, and the multiplexing of the change identification signal a is interrupted at the same time as the actual broadcasting of programs B and C ends.

On the other hand, the microcomputer 21 on the VTR side executes operations based on the flowchart shown in FIG. First, when the recording start time (6 o'clock) set in recording reservation 1 arrives, the microcomputer 21 performs the following steps in step S1.
Power is turned on to the image recording mechanism and circuit section of the VTR, and the VTR is placed in a recording standby state. Next, the microcomputer 21 determines whether or not there is a cancellation identification signal in step S2. In this case, since the cancellation identification signal a is not multiplexed (absent), the microcomputer 21 determines the presence or absence of the change identification signal a in step S3. In this case as well, since the change identification signal a is not multiplexed (absent),
The microcomputer 21 starts recording in step S4, and recording of program A is started here.

Then, during recording of this program A, the microcomputer 21 determines the presence or absence of the change identification signal a in step S5. When the change identification signal a is not frequency multiplexed in the television signal of program A, the determination result in step S5 is "absent", and the microcomputer 21 again checks the presence or absence of the change identification signal a in the next step S6. to decide.

Then, a change identification signal a is added to the television signal of program A.
is not frequency multiplexed, the determination result in step S6 is "no", and the microcomputer 21
The recording of program A is continued by repeating the determination in step S6.

Here, a change identification signal a is added to the television signal of program A.
is frequency multiplexed (around 8 o'clock), the determination result in step S6 becomes "Yes", and the microcomputer 21 determines in step S7 whether or not recording is currently in progress. in this case,
Since program A is being recorded (YES), the microcomputer 21 determines the presence or absence of the change identification signal a in step S8.

Then, a change identification signal a is added to the television signal of program A.
is frequency-multiplexed, the determination result in step S8 is "Yes", and the microcomputer 21 repeats the determination in step s8 to continue recording program A.

After that, the change identification signal a is added to the television signal of program A.
When V is no longer frequency multiplexed, the determination result in step S8 becomes "no", and the microcomputer 21 stops recording in step S9, and furthermore, in step SIO, the microcomputer 21 stops recording.
The power supply to the image recording mechanism and circuit section of the TR is cut off, and the extended program A is now entirely recorded as shown in FIG. 2(d).

Next, when the recording start time (9 o'clock) set in recording reservation 2 arrives, the microcomputer 21 turns on the power to the image recording mechanism and circuit section of the VTR in step Sl, and puts the VTR into recording standby. state. Next, the microcomputer 21 determines whether or not there is a cancellation identification signal in step S2.

In this case, the abort 1 separate signal is not multiplexed (none).
Therefore, the microcomputer 21 determines the presence or absence of the change identification signal a in step S3. In this case, since the change identification signal a is multiplexed into the television signal of program B, the microcomputer 21 determines whether or not the change identification signal a is present in step S5. At this time, since the change identification signal a is frequency multiplexed (present) in the television signal of program B, the determination result in step S5 is "present", and the microcomputer 21
This determination is repeated and the recording standby state continues.

Here, when program B ends and the change identification signal a multiplexed in the television signal is no longer detected (9
(around 1:30), the determination result in step s5 is "no", and the microcomputer 21 again determines the presence or absence of the change identification signal a in the next step S6. In a state where the change identification signal a is not obtained, the determination result in step SS is "no", and the microcomputer 21 repeats the determination in step S6 to continue the recording standby state.

After that, when program C is started and the change identification signal a multiplexed on the television signal is detected, step S6
The judgment result is “Yes”, and the microcomputer 21
In step s7, it is determined whether recording is currently in progress. In this case, since it is in a recording standby state (No), the microcomputer 21 starts recording in step S11, and recording of program C is started here.

Then, during the recording of this program C, the microcomputer 21 determines the presence or absence of the change identification signal a in step S8. Then, in a state where the change identification signal a is frequency multiplexed into the television signal of program C, the determination result in step S8 becomes "yes", and the microcomputer 21 repeats the determination in step S8 to record program C. or continued.

Then, during the television signal of program C, the change identification signal a
When frequency multiplexing is no longer performed, the determination result in step S8 becomes "no", the microcomputer 21 stops recording in step S9, and furthermore, in step SlO, the microcomputer 21 stops recording.
The power supply to the image recording mechanism and circuit section of the TR is cut off, and the program C whose broadcast time has been changed is all recorded here, as shown in FIG. 2(d).

Next, using the example shown in FIG. 4, the operation when broadcasting is canceled will be explained. That is, in FIG. 4, programs A and B as shown in FIG. 4(a).

With respect to the broadcast schedule of program C, as shown in FIG. (c)
As shown in FIG. 2, the actual broadcast time of program A is extended, and the subsequent broadcast of program B is canceled. In this case, as shown in Figure 4(c), the broadcasting station frequency-multiplexes a cancellation identification signal onto the television signal of program A from a little before the scheduled start time of program B. The multiplexing of the discontinuation identification signal is discontinued at the same time as the end of the broadcast.

Then, when the recording start time (8 o'clock) set in recording reservation 1 arrives, the microcomputer 21 on the VTR side turns on the power to the image recording mechanism and circuit section of the VTR in step S1, and starts the VTR. Set to recording standby state. Next, the microcomputer 21 determines whether or not there is an abort identification signal in step S2. In this case, since the cancellation identification signal is multiplexed with the television signal of the extended program A, the microcomputer 21 cancels recording reservation 1 in step 512, and cancels the recording reservation 1 in step S10. Cut off the power supply to the mechanical part and circuit part.

After that, the recording start time (9 o'clock) set in recording reservation 2
Then, the microcomputer 21 performs step Sl.
Then, the power is turned on to the image recording mechanism and circuit section of the VTR, and then step S2. Since the judgment result in S3 is "no", recording of program C is started in step S4, and the recording of program C is started in step S5. Since the judgment result of S6 is "no",
Recording will continue until the end time of recording reservation 2.
Program C or all is recorded here.

Therefore, according to the configuration of the above embodiment, when the program time is extended, the broadcast time is changed to a later time, the broadcast is canceled, etc., the broadcasting station has to indicate the change in the broadcast time and the cancellation of the broadcast. By simply frequency-multiplexing two types of single-frequency identification signals a and b onto a television signal and broadcasting, the VTR side can automatically change reservation details and cancel reservations, and prevent incomplete programs. It is possible to prevent unnecessary recording or unnecessary recording.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and can be implemented in various other ways without departing from the scope of the invention.

[Effects of the Invention] As described in detail above, according to the present invention, the preset recording reservation time is automatically changed or recorded according to the situation such as a change in the broadcast time of a program desired to be recorded or a broadcast cancellation. It is possible to provide an extremely good timer recording device that can cancel a reservation and prevent incomplete or wasteful recording of a program.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of a timer recording device according to the present invention, FIG. FIG. 3 is a flowchart for explaining the operation of the microcomputer of the same embodiment, and FIG. 4 is a diagram showing an example when broadcasting for explaining the operation of the same embodiment is canceled. 11... Input terminal, 12... Signal multiplex circuit, 131
4...Input terminal, 15...Output terminal, 16...Input terminal, 17...BPF, 18...Output terminal, 19.
20... BPF, 21... Microcomputer, 2
2...Memory.

Claims (1)

[Claims] A first identification signal of a single frequency indicating a change in the broadcast time of the program, and a second identification signal of a single frequency different from the first identification signal indicating the cancellation of the broadcast of the program, the broadcasting of the program Broadcasting means for frequency-multiplexing and broadcasting the first and second identification signals on a television signal when the time has changed or the broadcasting of a program has been canceled; and receiving means for automatically changing the preset recording reservation time and canceling the recording reservation based on the first and second identification signals obtained by receiving the television signal. A timer recording device featuring: