JPH05266537A - Video recording reservation information recording and detecting device for vtr - Google Patents

Abstract

PURPOSE:To reservation information code obtained by coding for the time of generating storage information and for the time of decoding the video record ing reservation information code obtained from a control pulse. CONSTITUTION:The video recording reservation information code detected by a video reservation information code detecting part 24 is given via a to a video recording reservation code storage part 236 via a line 25 and is stored there. A video recording reservation executing information signal decoded by a decoder 7 for the video recording reservation information to be capable of executing video recording reservation operation, i.e., a signal for showing various information, such as a broadcasting channel, a broadcasting date, video recording reservation starting time, a length of video recording time, etc., is outputted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording detection device for recording reservation information in a VTR.

[0002]

2. Description of the Related Art Conventionally, in a VTR, a channel on which broadcasting is performed, a broadcasting date, a recording reservation start time, a recording time length,
It is general that the contents of the broadcast program designated by the above various information can be automatically recorded on a magnetic tape by inputting various information such as the above into the recording reservation device (timer recording device). In addition, when the recording reservation is made as described above, various information indicating the contents of the recording reservation is also displayed in the replay image within a few seconds before the recording of the reserved image content. Is displayed, the various information indicating the contents of the recording reservation is converted into a video signal by a character generator and recorded on a video track.

[0003]

When the recording reservation is made as described above, various information indicating the contents of the recording reservation is also recorded.
By recording on a magnetic tape, for example, it is possible to confirm various information such as the channel that was broadcast at a later date, the broadcast date, the recording reservation start time, the recording time length, etc., and it can be effectively used for other purposes. However, when the various information indicating the contents of the recording reservation is converted into a video signal by, for example, a character generator and is recorded on a video track as described above, the contents of the recording reservation described above are preferable. Information cannot be known unless an image is reproduced from the magnetic tape, and it is impossible to perform information retrieval during high-speed transfer such as fast-forwarding or rewinding the magnetic tape. However, as for the above-mentioned problem, as disclosed in, for example, Japanese Patent Laid-Open No. 2-91875, various information indicating the contents of the recording reservation is used as a code of the VHS (registered trademark) address search system to control a magnetic tape control track. If you record it in
Solvable.

However, in the conventional general recording reservation operation at the time of recording reservation in the VTR, the recording reservation device is provided with the respective information such as the channel on which the broadcast is performed, the broadcast date, the recording reservation start time, and the recording time length. (Timer recording device)
However, the operation is complicated and the operation is often erroneous at the time of inputting each information described above. Therefore, in recent years, encoding is performed in which different specific combinations of various information such as channels on which broadcasting is performed, broadcast dates, recording reservation start times, recording time lengths, etc. are represented by different specific numbers. A recording reservation method for recording reservation using a specific recording reservation information code obtained by encoding according to the mode has been proposed by Gemster Corporation in the United States. The above-mentioned recording reservation method for recording reservation using the recording reservation information code by Gemster, Inc. of the United States is based on the Gemstar code (abbreviated as G code) in which the recording reservation information is expressed using up to 8 digits. , V
Although it is a recording reservation of TR, many V of Japan
The manufacturers of TRs are currently considering the adoption of the above-mentioned recording reservation system.

By the way, a recording reservation device (timer recording device)
In the conventional VTR configured to input predetermined recording reservation information to perform reserved recording, the recording reservation information processing system is not necessarily the same, and the recording reservation information processing system is different for each manufacturer. However, as described above, each of the specific combinations of various information such as the channel on which the broadcast is performed, the broadcast date, the recording reservation start time, the recording time length, etc. The specific recording reservation information code obtained by encoding in the encoding mode in which it is represented by different specific numbers is adopted when the recording reservation is made by adopting it in the conventional VTRs of various companies. In order to convert a specific recording reservation information code into a control signal conventionally used in each VTR, it is possible to use a decoder for each specific recording reservation information code. Also, even when various information indicating the contents of the recording reservation is recorded at the time of recording on the control track of the magnetic tape as the code of the VHS (registered trademark) address search system, the specific recording reservation information code described above is used. Recording on the control track of the magnetic tape has the advantage that the amount of recorded data can be reduced, but in this case, the specific recording reservation information code reproduced from the control track of the magnetic tape is not specified. Since it will be required to decode using the recording reservation information code decoder,
The complication of the configuration became a problem, and a solution for it was sought.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a specific combination of various information such as a channel on which broadcasting is performed, a broadcast date, a recording reservation start time, a recording time length, and the like are designated by different specific numbers. Recording reservation execution information obtained by decoding the above-mentioned recording reservation information code by a recording reservation information code decoder in a VTR in which recording reservation is made using the recording reservation information code obtained by encoding in the encoding mode A means for recording a control pulse on the control track of the magnetic tape while performing a reserved recording operation based on the signal and changing the duty cycle of the control pulse according to the recording reservation information code, and controlling the magnetic tape during the reproducing operation. Obtained from the control pulse reproduced from the track To provide a recording detector for recording reservation information in VTR comprising a means for decoding the recording reservation information code decoder of the image reservation information code described above.

[0007]

Operation: A specific combination of various kinds of information such as a channel on which broadcasting is performed, a broadcast date, a recording reservation start time, a recording time length, etc. is coded by an encoding mode in which each different specific number is represented. A recording reservation information code decoder capable of decoding the obtained recording reservation information code into a recording reservation execution information signal used in a VTR is provided with a magnetic recording device during generation of storage information required in the recording reservation device and during reproduction operation. The configuration of the recording reservation device can be simplified by using it for decoding the recording reservation information code obtained from the control pulse in which the duty cycle of the control pulse is changed by the recording reservation information code reproduced from the control track of the tape. To do.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The specific contents of the recording detection device for recording reservation information in a VTR of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a block diagram showing a schematic configuration of a recording detection device for recording reservation information in a VTR of the present invention, and FIG. 2 is an explanation of a control pulse in a state in which a duty cycle of the control pulse is changed according to a recording reservation information code. It is a waveform diagram for. V of the present invention
In FIG. 1, which shows a schematic configuration of a recording detection device for recording reservation information in a TR, 1 is a main body of a VTR (video tape recorder), and the main body 1 of the VTR is a drive mechanism, a control unit, an electric circuit of a magnetic tape. It has a well-known configuration including a unit, a recording reservation device, an operation unit, and the like. Reference numeral 2 denotes a recording reservation information input unit, and for example, a ten key is used as the recording reservation information input unit 2. A numeric keypad may also be used as the search information input unit 34 described later. The recording reservation information to be input to the recording reservation information input section 2 is a specific combination of various information such as a channel on which broadcasting is performed, a broadcast date, a recording reservation start time, and a recording time length. , A recording reservation information code obtained by encoding in a coding mode in which they are represented by different specific numbers (hereinafter, may be simply referred to as recording reservation information code).

When the VTR is set to the recording reservation operation mode by the operation of setting the operation mode of the VTR to the operation unit (not shown), the control unit (not shown) of the VTR changes the switching control signal of the changeover switch SW1. By the change control signal supplied to the supply terminal 21 and the change control signal supply terminal 22 of the change switch SW2, the movable contacts v of the change switches SW1 and SW2 are switched to the fixed contact a side, and If the operation mode of the VTR is set to the search operation mode by the setting operation of the operation mode of the VTR for the operation unit (not shown), the control unit (not shown) of the VTR controls the changeover switch SW1. Signal supply terminal 21
And the changeover control signal supplied to the changeover control signal supply terminal 22 of the changeover switch SW2 causes the movable contacts v of the changeover switches SW1 and SW2 to be switched to the fixed contact b side.

When the VTR is set to the recording reservation operation mode to make a recording reservation in the VTR and the recording reservation information code is input to the recording reservation information input section 2, the recording reservation information code input to the recording reservation information input section 2 is entered. Is stored in the recording reservation information code storage unit 4 via the line 3. The recording operation and the reading operation of the recording reservation information code storage unit 4 are controlled by the recording reservation control unit 10, and 37 indicates transmission lines of various control signals. As described above, the recording reservation information code stored in the recording reservation information code storage unit 4 is, as described above, of various information such as the channel on which the broadcast is performed, the broadcast date, the recording reservation start time, the recording time length, and the like. Since the different combinations are coded by the coding mode in which they are represented by different specific numbers, the VTR can perform a predetermined recording reservation operation with the above recording reservation information code. I can't do it.

Then, the recording reservation information code stored in the recording reservation information code storage unit 4 as described above is read from the recording reservation information code storage unit 4 and moved with the line 5 and the fixed contact a of the changeover switch SW1. It is decoded by the recording reservation information code decoder 7 supplied via the contact point v and the line 12, and VT is output from the recording reservation information code decoder 7.
A recording reservation execution information signal that enables R to execute the recording reservation operation, that is, the channel on which the broadcast is performed, the broadcast date,
A signal indicating various information such as the recording reservation start time and the recording time length is output, and the signal is stored through the line 13, the movable contact v of the changeover switch SW2, the fixed contact a and the line 14 to store the recording reservation execution information signal. It is given to the section 9 and stored. The recording operation and the reading operation of the recording reservation execution information signal storage unit 9 are controlled by the recording reservation control unit 10, and 38 indicates transmission lines of various control signals.

The above-mentioned recording reservation control section 10 always keeps the recording reservation execution information signal stored in the above-mentioned recording reservation execution information signal storage section 9, that is, the channel to be broadcast, the broadcast date, and the recording reservation start time. , The length of the recording time, etc., the contents of the program of the reserved broadcast channel is VT when the recording is reserved.
A recording control signal is supplied to the main body 1 of the VTR via the line 20 so as to be recorded on the R, whereby the main body 1 of the VTR makes a reservation for the magnetic tape mounted on the main body 1. It operates to record the contents of broadcast programs.

Further, in the recording reservation control section 10 described above,
Recording reservation start code recording control unit 11 via line 17
The control signal is supplied to the main body 1 of the VTR from the recording reservation start code recording control section 11 via the line 19 according to the recording reservation start code. The recording reservation control unit 10 supplies a control signal to the recording reservation information code storage unit 4 through the line 37 to correspond to the reserved broadcast program targeted for recording start. The recording reservation information code is read from the recording reservation information code storage unit 4 and given to the recording reservation information code recording control unit 8 via the line 6. In the recording reservation information code recording control section 8 described above, the recording reservation start code recording control section 11 supplies the recording signal according to the recording reservation start code described above, which is supplied from the recording reservation start code recording control section 11 to the main body section 1 of the VTR. At the subsequent time, a recording signal corresponding to the recording reservation information code read from the recording reservation information code storage unit 4 is supplied to the main body 1 of the VTR via the line 18.

As described above, the main unit 1 of the VTR from the recording reservation start code recording control unit 11 via the line 19.
To the main body 1 of the VTR from the recording reservation information code recording control unit 8 via the line 18 at the recording signal according to the recording reservation start code and the time position subsequent to the recording signal according to the recording reservation start code. The recording reservation information code read from the supplied recording reservation information code storage unit 4 and the corresponding recording signal are recorded in the control track of the magnetic tape as a change of the duty cycle of the control signal in the main body 1 of the VTR. .. 2A and 2B, the duty cycle value of the control signal to be recorded on the control track is shown in FIG.
When the duty cycle Ta / T is 0.6 or more as in the control pulse shown in (a) of FIG.
The duty cycle Tb / T is less than or equal to 0.3 as in the control pulse shown in Fig. 4 and the waveforms of the control pulse when assuming the predetermined logical values "0" and "1" respectively are shown. It is a thing.

As described above, a code that represents a different specific combination of various information such as a channel on which broadcasting is performed, a broadcast date, a recording reservation start time, a recording time length, etc. is represented by different specific numbers. When the recording signal corresponding to the recording reservation information code obtained by encoding according to the encoding mode is recorded on the control track of the magnetic tape as the change of the duty cycle of the control signal, it corresponds to a numerical sequence with a large number of digits. Since the information signal to be recorded by using the recording signal is recorded on the control track of the magnetic tape with a small number of digits, it is possible to record the recording reservation information on the control track in a short recording time. ..

By the recording operation in the main body 1 of the VTR, the content of the broadcast program reserved for recording is recorded on the video track of the magnetic tape, and the recording signal by the recording reservation start code and the recording reservation information are recorded. The recorded magnetic tape in which the code and the corresponding recording signal are recorded on the control track of the magnetic tape as a change in the duty cycle of the control signal is included in the control signal reproduced from the recorded magnetic tape. By decoding the information code, it is possible to retrieve various information such as the channel on which the broadcast is performed, the broadcast date, the recording reservation start time, and the recording time length. VT
The operation mode of R is V for the operation unit (not shown).
The search operation mode is set by the operation mode setting operation of the TR, and the changeover control signal supply terminal 21 of the changeover switch SW1 is supplied from the control unit (not shown) of the VTR.
And the switching control signal supplied to the switching control signal supply terminal 22 of the switching switch SW2, the VTR performs the reproducing operation in a state where the movable contact v of the switching switches SW1 and SW2 is switched to the fixed contact b side. The control signal reproduced from the control track of the magnetic tape is used for the control operation in the capstan control circuit provided in the main body 1 of the VTR, or used as information for VISS and VASS. In addition to the above, it is supplied to the recording reservation start code detecting unit 30 via the line 29 and is supplied to the recording reservation information code detecting unit 24 via the line 23. It should be noted that, even when the magnetic tape is transported at a high speed, if a magnetic tape running mechanism capable of reproducing the recorded information on the control track by the magnetic head is used, the search operation can be performed even during fast forward and rewind.

In the state where the VTR operation mode is set to the search operation mode, desired search items for the search information input unit 34, for example, a channel on which broadcasting is performed, a broadcast date, a recording reservation start time, and a recording time length. The search operation is started by inputting other information. The information on the desired search item input to the search information input unit 34 is stored in the search information storage unit 39 via the line 35. The storage operation and the read operation of the search information storage unit 39 are performed under the control of a control unit (not shown), and the information on the desired search items stored in the search information storage unit 39 is the search described later. It is read during operation and supplied to the search signal processing unit 36 via the line 40. VTR
When the search operation starts, the running system of the magnetic tape of the main body 1 of the VTR operates so as to run the magnetic tape, and the control track is changed with the duty cycle of the control pulse changed as described above. The recording signal according to the recording reservation start code and the recording signal corresponding to the recording reservation information code following the recording signal according to the recording reservation start code, which have been recorded in (1), are reproduced from the control track by the magnetic head.
The reproduction signal of the recording signal according to the recording reservation start code reproduced from the control track and the reproduction signal of the recording signal corresponding to the recording reservation information code following the recording signal according to the recording reservation start code are the main unit 1 of the VTR. It is given to the recording reservation start code detecting section 30 and the recording reservation information code detecting section 24 from the lines 29 and 23.

The above-mentioned recording reservation start code detecting section 3
The recording reservation start code detected by 0 is line 3
1 to the search signal processing unit 36. The recording reservation information code detected by the recording reservation information code detecting unit 24 is given to the recording reservation information code storage unit 26 via the line 25 and stored therein. The recording reservation information code stored in the recording reservation information code storage unit 26 is read out under the control of a control circuit (not shown), and the line 27 and the fixed contact b of the changeover switch SW1 are read.
And the movable contact v to be supplied to the recording reservation information code decoder 7 and decoded by the recording reservation information code decoder 7 so that the VTR can execute the recording reservation operation from the recording reservation information code decoder 7. A recording reservation execution information signal, that is, a signal indicating various information such as a channel on which broadcasting is performed, a broadcast date, a recording reservation start time, a recording time length, etc. is output, and the signal is the line 13 and the changeover switch S.
It is given to and stored in the search recording reservation execution information signal storage section 32 via the movable contact v of W2, the fixed contact b, and the line 28. The recording reservation execution information signal storage unit 32 for retrieval described above.
The storage operation and the read operation of are searched by a control circuit (not shown), and the search recording reservation execution information signal read from the search recording reservation execution information signal storage unit 32 is processed by the search signal processing via the line 33. Is supplied to the section 36.

In the search signal processing unit 36, as described above, the desired search items input from the search information input unit 34, such as the channel on which the broadcast is to be performed, the broadcast date, the recording reservation start time, the recording time length, The above-mentioned information content read from the search information storage unit 39 storing other information and supplied via the line 40, and supplied from the search recording reservation execution information signal storage unit 32 via the line 33. The search is executed by detecting the coincidence with the contents of the recording reservation execution information signal for search, and the recording position of the information to be searched on the magnetic tape is known by the well-known VASS method. The magnetic tape is run to the position where the information is retrieved, and the retrieved contents are displayed on a display device (not shown).

[0020]

As is apparent from the above detailed description, the recording detection device for recording reservation information in the VTR according to the present invention has a broadcasting channel, a broadcasting date, a recording reservation start time, a recording time length, etc. The recording reservation information code obtained by encoding the different specific combinations of the various types of information described above by the encoding mode in which they are represented by different specific numbers is used to input the recording reservation information at the time of recording reservation. A recording reservation information code decoder that can be decoded into the recording reservation execution information signal used in the simplified VTR is reproduced from the control track of the magnetic tape at the time of generating the storage information required by the recording reservation device and at the time of the reproducing operation. Control pulse in the state where the duty cycle of the control pulse is changed according to the recorded reservation information code It is possible to simplify the configuration of the video-recording programming apparatus by which also serves to decode the time and recording reservation information code obtained al.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a recording detection device for recording reservation information in a VTR of the present invention.

FIG. 2 is a waveform diagram for explaining a control pulse in which a duty cycle of the control pulse is changed according to a recording reservation information code.

[Explanation of symbols]

1 ... VTR (video tape recorder) main body part, 2 ... Recording reservation information input part, 4 ... Recording reservation information code storage part, 7
... Decoder for recording reservation information code, 8 ... Recording reservation information code recording control unit, 9 ... Recording reservation execution information signal storage unit, 1
0 ... Recording reservation control section, 11 ... Recording reservation start code recording control section 21, 22 ... Switching control signal supply terminal, 24 ...
Recording reservation information code detection unit, 26 ... Recording reservation information code storage unit, 30 ... Recording reservation start code detection unit, 32 ...
Search recording reservation execution information signal storage unit, 34 ... Search information input unit, 36 ... Search signal processing unit, 39 ... Search information storage unit,
SW1, SW2 ... Changeover switch,

Claims (1)

[Claims] 1. A channel on which broadcasting is performed, a broadcasting date,
Recording reservation using a recording reservation information code obtained by encoding different combinations of various kinds of information such as recording reservation start time, recording time length, etc. with different specific numbers. VT
At R, the reserved recording operation is performed based on the recording reservation execution information signal obtained by decoding the recording reservation information code by the recording reservation information code decoder, and the duty cycle of the control pulse is changed by the recording reservation information code. A means for recording the control pulse in the changed state on the control track of the magnetic tape, and a recording reservation information code decoder which obtains the recording reservation information code obtained from the control pulse reproduced from the control track of the magnetic tape during the reproducing operation. A recording detection device for recording reservation information in a VTR, comprising a decoding means.