JPH04284080A - Television signal video recorder - Google Patents

Abstract

PURPOSE:To provide the video recorder, which can simplify a method for reserved recording and can record programs corresponding to the change of broadcasting time, at the television signal video recorder. CONSTITUTION:A code signal corresponding for each program is superimposed to a TV signal transmitted from a TV broadcasting station. In the case of executing reserving video recording, the code signal to execute video recording is inputted from an input terminal 17. A comparator part 15 compares this code signal with the code signal transmitted from the TV broadcasting station. When the code signals are coincident as the result, a video recording circuit 18 starts video recording. Afterwards, when the code signal transmitted from the TV broadcasting station is changed, the video recording circuit 18 stops recording. When the programs to be video-recorded are overlapped, the program to be video-recorded is selected based on video recording data in the past.

Description

[Detailed description of the invention]

[Object of the invention]

0002

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television signal recording apparatus having a scheduled recording function.

0003

[Prior Art] Currently, television (hereinafter referred to as TV)
A video tape recorder (hereinafter referred to as VTR) is usually used as a device for receiving signals. Most of these VTRs have a scheduled recording function. This scheduled recording function will be explained with reference to the drawings.

FIG. 4 is a block diagram illustrating the scheduled recording function of a VTR. In this figure, information on the start and end date and time of scheduled recording and the channel are input to the input terminal 17. This information is input to the CPU 13. This CPU13
consists of a channel selection section 14, a comparison section 15, and a storage section 16. Among these, information regarding scheduled recording is stored in the storage unit 16. The comparator 15 then compares the stored date and time of scheduled recording start with the date and time set by the timer 22. When the two dates and times match, a recording start signal is sent to the control circuit 19. On the other hand, the channel selection section 14 controls the channel selection circuit 11 based on the channel information stored in the storage section 16.

TV signals of a plurality of channels received by the antenna 10 are input to the channel selection circuit 11 . The channel specified by the control signal is selected from among these channels. Then, the TV signal of this channel is sent to the recording circuit 18. On the other hand, the control circuit 19 outputs a recording start signal to the recording circuit 18. As a result, the recording circuit 18 starts scheduled recording.

Thereafter, the comparator 15 compares the recording end time with the time of the timer 22. Then, when the recording end time comes, a recording end signal is sent to the control circuit 19. Upon receiving this recording end signal, the control circuit 19 instructs the recording circuit 18 to end recording. This ends the scheduled recording performed by the recording circuit 18.

[0007] In the case of such scheduled recording, the input terminal 17
A large amount of information was required to be input. Specifically, information such as the recording date, start time and end time, channel, etc. was input using the keys on the VTR body or the remote control. However, this method was a complicated and difficult task for people who were not familiar with operating the equipment, such as children, the elderly, and women who were sensitive to equipment. For this reason, a program different from the intended program was often recorded.

[0008] Even if the recording information was input correctly, if the broadcast time was shifted, another program would have been recorded. In particular, baseball broadcasts often have extended broadcast times. For this reason, when making a reservation to record a baseball broadcast, or when making a reservation to record a program from the same broadcasting station after the baseball broadcast has ended, it is difficult to record all the desired programs.

[0009]

[Problems to be Solved by the Invention] As mentioned above, in the case of the time-specified scheduled recording method, a large amount of information needs to be input to the input terminal 17. Specifically, information such as the recording date, start time and end time, channel, etc. was input using the keys on the VTR body or the remote control. However, this method is a complicated and difficult task for people who are not familiar with input operations. For this reason, there were many cases in which the user recorded a program different from the intended program or gave up on scheduled recording.

[0010] Even if the recording information is input correctly, the broadcast time may be shifted. In particular, baseball broadcasts often have extended broadcast times. For this reason, if you want to schedule a recording of a baseball broadcast,
Alternatively, when a program of the same broadcasting station is scheduled to be recorded after a baseball broadcast has ended, it is difficult to record all the desired programs.

[0011] The television signal recording device according to the present invention eliminates these problems, reduces program entry errors during scheduled recording, and makes it possible to schedule recording of a desired program even if the broadcast time changes. The purpose is to provide a device that can do this.

[Configuration of the invention]

[0013]

[Means for Solving the Problems] The first invention provides a first method that includes a channel code and a program code for a video information signal.
input means for receiving, via an antenna, a television signal on which a code signal of , means for separating the first code signal and the video information signal from the television signal selected by the channel selection means, a recording means capable of recording the separated video information signal, and information on scheduled recording. A second code signal is input, and the storage means for storing it compares the separated first code signal and the stored second code signal, and depending on the comparison result, at least starts recording and Comparing means for generating an instruction signal to end recording; and means for controlling the channel selection means and the recording means in response to the instruction signal, and recording video information of a predetermined program with reservation contents according to the second code signal. and a priority determining means for determining which program is to be recorded with priority when the time slots of a plurality of programs designated by the second code signal overlap. To reliably record a program scheduled to be recorded from the start to the end of broadcasting.

[0014] Also, the second invention includes an input means for receiving a television signal on which a first code signal including a channel code and a program code is superimposed on a video information signal via an antenna; a channel selection means for selectively extracting a signal of a target broadcasting station from the selected television signal; and separation of the first code signal and the video information signal from the television signal selected by the channel selection means. a delay means for delaying the separated video information signal for a certain period of time and outputting the separated video information signal; a recording means capable of recording the video information signal from the delay means; and a second code signal as information for scheduled recording. is input, the storage means for storing it compares the separated first code signal and the stored second code signal, and outputs at least an instruction signal to start recording and end recording according to the comparison result. and a control means for controlling the channel selection means and the recording means in response to the instruction signal to cause the recording means to record video information of a predetermined program according to the reservation content according to the second code signal. and a priority order determining means for determining which program is to be recorded with priority when the time slots of a plurality of programs designated by the second code signal overlap. To accurately match the timing of starting recording of a television signal, and to reliably record a program scheduled to be recorded from the start to the end of broadcasting.

[0015]

[Operation] According to the first invention, a program-specific code signal is superimposed on a video signal at a TV broadcasting station, and the superimposed code signal is sent out as a TV signal. On the other hand, a code signal of a program to be reserved for recording is input to the recording device and stored therein. The recording device starts recording when it receives the TV signal superimposed with this code signal. Then, when the code signal changes, recording is stopped.

[0016] Furthermore, when recording a plurality of programs and their recording times overlap, it is automatically determined which program to record.

[0017] In the second invention, the timing at which recording of the TV signal is started becomes accurate by adding the delay time that occurs when processing the code signal in the first invention to the TV signal before starting recording.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A television signal recording apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing the configuration of a first embodiment of the present invention, and FIG. 2 is an explanatory diagram illustrating the states of signals in FIG. 1. Further, FIG. 3 is a block diagram showing the configuration of a second embodiment of the present invention.

In FIG. 1, code information of a program to be reserved for recording is input to an input terminal 17. This code information is C
It is input to PU13. This CPU 13 is made up of a channel selection section 14, a comparison section 15, and a storage section 16. Among these, the storage unit 16 stores information regarding input scheduled recording.

By the way, in TV signals transmitted from a plurality of TV broadcast stations, a code signal for each program is superimposed on the video signal. These TV signals are received by antenna 10. When scheduled recording is performed on a plurality of channels, the channel selection circuit 11 performs channel scanning to check the code signal of the channel to be recorded. This channel scan only requires the channels you want to record. Then, the TV signals of multiple channels received by the antenna 10 are
The signals are sequentially sent to the separation circuit 12.

The separation circuit 12 separates and extracts the code signal from the input TV signal. This code signal is
Sent on 13th. On the other hand, the video signal from which the code signal has been removed is sent to the recording circuit 18.

Here, the comparison section 15 in the CPU 13 compares the code signal stored in the storage section 16 with the code signal input from the separation circuit. When the two code signals match, the channel is instructed to the channel selection section 14. In response to this, the tuning section 14 stops the channel scanning of the tuning circuit 11. At the same time, specify the channel to record.

The comparator 15 also sends a recording start signal to the control circuit 19. As a result, the recording circuit 18 starts scheduled recording.

[0024] When the program ends, the code signal of the TV signal transmitted from the TV broadcasting station changes. This change is detected by the comparator 15. The comparator 15 then sends a recording end signal to the control circuit 19. As a result, the scheduled recording in the recording circuit 18 is completed.

The discrimination circuit 20 stores data of programs recorded in the past. This data is used as material for determining priorities when programs to be recorded overlap.

A specific example will be explained below. There are two programs to be reserved for recording, and the broadcast time of the first program that is being recorded first may be extended to the broadcast time of the second program that is scheduled to be recorded next. In this case, the determination circuit 20 determines which program to select from the past recorded data for the first program and the second program.

Next, the code signal will be explained with reference to FIG. In this figure, (1) shows a TV signal transmitted from a TV broadcast station. Here a is a code signal and b
is a video signal. (2) and (3) show the TV signals after being separated by the separation circuit 12. Here, (2) is only the video signal b, which is sent to the recording circuit 18. Also (3)
is only the code signal a. This code signal a is sent to the comparison section 15. The expanded code signal a is (4
). The code signal a consists of a channel number code x, a broadcast program code y, and a time code z.

FIG. 2(5) shows the state of channel switching when recording the first and second programs consecutively. Assume that the start time of the first program being broadcast on channel A is c, and the scheduled end time is d. Also, assume that the scheduled start time of the second program being broadcast on channel B is d, and the scheduled end time is f. If the broadcast time of channel A is extended and ends at time e, the discrimination circuit 20 determines which program to record, the first program or the second program, from the data of previously recorded programs. decide. This information is sent to the comparison section 15. Suppose now that the discrimination circuit selects the second program. In this case, the channel selection circuit 11 selects channel B at time d. This causes the recording circuit 18 to
Record the program.

Next, the second invention will be explained with reference to FIG. This diagram differs from FIG. 1 in that a delay circuit 21 is inserted between the separation circuit 12 and the recording circuit 18. This delay circuit 21 delays the video signal by the rise time in the CPU 13 and the control circuit 19, and sends the video signal to the recording circuit 18. This makes it possible to reliably record the program from the start.

As described above, by comparing the code signal input from the input terminal 17 with the code signal transmitted from the TV broadcasting station, scheduled recording can be easily and accurately performed, and it is also possible to change the broadcast time. It can be done in this form. Additionally, a delay circuit 21 is provided between the separation circuit 12 and the recording circuit 18.
By inserting , you can reliably record the program from the start. Additionally, the priority order of programs to be recorded is determined from past recorded data. By performing recording according to this priority order, the program that the viewer wants to watch will be recorded with a high probability.

Incidentally, the code signals inputted from the input terminal 17 may include only the channel number code x and the broadcast program code y. In this case, time code z has not been input. This allows you to select and record only programs with specific content on a specific channel. Also, storage unit 1
The channel scan performed to search for a code signal identical to the code signal stored in 6 can also be performed intermittently. This allows power consumption to be reduced. It is also possible to change the channel scan ratio between each channel by using the time code z included in the code signal.

[0032]

As described above, the code signal input from the input terminal 17 is compared with the code signal transmitted from the TV broadcasting station. Then, when the two code signals match, recording is performed. If the code signal changes during recording, recording will stop. This makes it possible to perform scheduled recording easily, accurately, and in a manner that also accommodates changes in broadcast time. Furthermore, by inserting the delay circuit 21 between the separation circuit 12 and the recording circuit 18, it becomes possible to reliably record the program from the start.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention.

FIG. 2 is an explanatory diagram illustrating the code signal of the present invention.

FIG. 3 is a block diagram showing the configuration of another embodiment of the present invention.

[Figure 4] Block diagram showing the conventional configuration

[Explanation of symbols]

10...Antenna 11...Tuning selection circuit 12...Separation circuit 13...CPU 14...Channel selection section 15...Comparison section 16...Storage section 17...Input terminal 18...Recording circuit 19...Control circuit 20...Discrimination circuit 21...Delay circuit

Claims (2)

[Claims] 1. An input means for receiving, via an antenna, a television signal in which a first code signal including a channel code and a program code is superimposed on a video information signal, and a television selected by the input means. a channel selection means for selectively extracting a signal of a target broadcasting station from the signal; and means for separating the first code signal and the video information signal from the television signal selected by the channel selection means; a recording means capable of recording the separated video information signal; a storage means for inputting and storing a second code signal as information on reserved recording; a comparison means for comparing the second code signal and generating at least an instruction signal to start and end recording according to the comparison result; and controlling the channel selection means and the recording means in response to the instruction signal; a control means that causes the recording means to record video information of a predetermined program according to the reservation content according to the second code signal; 1. A television signal recording device comprising: priority order determining means for determining whether to record a program with priority. 2. An input means for receiving, via an antenna, a television signal in which a first code signal including a channel code and a program code is superimposed on a video information signal, and a television selected by the input means. a channel selection means for selectively extracting a signal of a target broadcasting station from the signal; and means for separating the first code signal and the video information signal from the television signal selected by the channel selection means; A delay means for delaying and outputting the separated video information signal for a certain period of time, a recording means capable of recording the video information signal from the delay means, and a second code signal as information for scheduled recording are inputted, a storage means for storing it; and a comparison means for comparing the separated first code signal and the stored second code signal and generating at least an instruction signal to start recording and end recording according to the comparison result. and,
control means for controlling the channel selection means and the recording means in response to the instruction signal and causing the recording means to record video information of a predetermined program according to the reservation content according to the second code signal; 1. A television signal recording device comprising: priority determining means for determining which program is to be recorded with priority when the time slots of a plurality of programs designated by code signals overlap.