JPH01296477A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To facilitate the confirmation of an image where a program searching signal is recorded without traveling the whole tape by providing each recording and reproducing means, storage means and comparatively discriminating means for a main signal and the program searching signal respectively. CONSTITUTION:The main signal is recorded and reproduced on the magnetic tape by the main signal recording and reproducing means 4, and the program searching signal is recorded and reproduced by the subsignal (program searching signal) recording and reproducing means 10. The main signal upon recording of the program searching signal is stored in the storage means 11, while in the discriminating means 13, the main signal upon reproducing of the program searching signal by the subsignal recording and reproducing means is compared with plural main signals in cassettes stored previously in the storage means 11, and then the relevant cassette is discriminated. Thus, when the cassette is recorded with the program searching signal, the main signal corresponding to the part of said program searching signal is stored, and the cassette recorded with the program searching signal is stored after data base processing, and then its cassette number is displayed at a display part, so that the cassette management is facilitated, and the cassette discrimination can be dealt in a short time without rewinding and fast forwarding for the discrimination at the time of ejecting the cassette.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a magnetic recording and reproducing device such as a VTR (video cassette tape recorder).

(Prior Art) A conventional VTR, for example, searches for recorded information by reading and counting control pulses recorded on a control track of a magnetic tape (hereinafter simply referred to as tape) using an internal A/C head. There are devices that record a cue signal, address code, etc. on the control track for use in other areas, or for similar purposes.

Additionally, digital processing is applied to the reproduced signal and the signal is transferred to a VTR.
There are devices that perform various image processing by storing data in an internal semiconductor memory, such as VT that records cue signals.
In R, the video signal at the location where the cue signal is recorded is played back by running the tape all the way from the beginning to the end, and the video signal at the location where the cue signal is recorded is stored in the semiconductor memory. It stores the video in a semiconductor memory, performs digital processing to divide one screen into multiple parts and display them on a display screen that can be displayed, and inserts and displays the part of the video on which the cue signal has been recorded on the split screen. Something is appearing.

(Problem to be solved by the invention) However, V
Even with TR, there was a drawback that the video at the location where the cue signal was recorded could not be confirmed unless the tape was run all the way from the beginning to the end.

SUMMARY OF THE INVENTION An object of the present invention is to provide a magnetic recording/reproducing apparatus which eliminates the above-mentioned conventional drawbacks and allows easy confirmation of an image at a location where a cue signal is recorded without running the entire tape.

(Means for Solving the Problems) The present invention has the above objects, in a magnetic recording and reproducing apparatus, to provide a main signal recording and reproducing means for recording and reproducing a main signal on a magnetic tape, and a sub recording and reproducing means for recording and reproducing a cue signal. and a storage means for storing the main signal when the sub-recording and reproducing means records the cueing signal, and a storage means for storing the main signal when the sub-recording and reproducing means also reproduces the cueing signal (including address code, etc., hereinafter the same). This is achieved by: identifying means for identifying the corresponding cassette by comparing the main signal with a plurality of main signals of the cassettes already stored in the storage means.

(Function) According to the present invention configured as described above, the main signal stored in the storage means (including other storage means that operates in conjunction, the same shall apply hereinafter) and the main signal at the cue signal recording location of the cassette are A matching cassette can be identified by comparing the cassettes, and if a cue signal is to be recorded on that cassette, the cue signal is recorded on that cassette.

Since the main signal of the signal portion is stored, the cassette in which the cue signal is recorded is stored as a database, so that the cassette can be searched quickly.

(Example) Hereinafter, the present invention will be explained in detail by way of an example using the drawings.

FIG. 1 is a plan view of an apparatus showing an embodiment in which the present invention is applied to a VTR. It shows a mechanism section 2 of a VTR main body 1 (hereinafter referred to as main body), 3 is a tape, and 4 is a main signal. A rotary head cylinder serves as a recording/reproducing means, and the tape 3 is pressed against a rotary head 1 to a cylinder 4 and a pinch roller 5, and is driven to run at a constant speed by a capstan motor 6. A winding reel 7 for the tape 3 is provided on the downstream side thereof, a supply reel 8 for the tape 3 is provided on the upstream side of the capstan motor 6, and a loading means 9 for winding the tape 3 around the rotary head cylinder 4 by a predetermined angle. Record cue signal 2 address code etc. on part of tape 3.

It has a subhead 10 for reading or erasing.

FIG. 2 is a block diagram showing the main components of one embodiment of the present invention. An identification circuit 13 that identifies the cassette by comparing the converted video signal with the video signals of a plurality of cassettes already stored in the storage means 11, and a control circuit 14 that controls their operations and basic operations as a VTR.
and a cue signal recording button 15 for recording a cue signal (or address code, hereinafter the same) on the front panel of the main body 1 as shown in the front view in FIG.
V for recording, playback, fast forward 2 rewind, search or stop etc.
It has a function operation button 16 for operating the TR function, and a display section 17 for displaying the cassette number identified by the identification circuit 13.

The present invention configured as described above operates as follows depending on the cassette used.

(1) In the case of a tape on which no video signal has been recorded: First, insert the cassette into the main body 1, move it to the specified position, and select and operate the record or playback button of the function operation button 16. 1), the loading means 9 pulls out the tape 3 from the cassette herb, winds it around the rotary head cylinder 4 by a predetermined angle, and makes contact with the sub-head 10. Form.

Thereafter, when the rotary head cylinder 4 starts recording a video, the subhead 10 first records a cue signal, and at the same time the video signal at that time is transferred to the quantization circuit 1.
2 and stored in the storage means 11.

In this way, the playback or recording operation is started, and if the cue signal recording button 15 is pressed if necessary, the cue signal is recorded on the tape 3 by the subhead 10, and the video signal at that time is quantized and stored in the storage means 11. Stored digitally.

Thereafter, the cue signal is recorded repeatedly in the same way, and the video signal corresponding to the cue signal is stored in the storage means 1 as data of the same tape under the control of the control circuit 4.

Note that when the 1st function operation button 16 is operated to stop (or - stop operation, the same applies hereinafter), the control circuit 14 causes the subhead 10 to record a cue signal on the tape 3, as in the case of ``-'', and the video at that time is recorded. After quantizing the signal, the running of the tape 3 is stopped, and the above quantized output is stored in a storage means]
1 is stored. Note that, once the cassette is ejected from the main body, the memory indicated in "-" is not stored as the video signal of that cassette.

(2) If video has already been recorded on the tape, when the cassette is loaded and the function operation button 15 is operated to search, the loading means 9 pulls out the tape 3 from the cassette herb under the control of the control circuit 14, and the fourth The tape running system shown in the figure is formed.

Thereafter, the tape 3 is run to the mounting position, and the presence or absence of recording of the cue signal of the cassette is detected.

(a) If no recording is detected at the mounting position by the above search, the cue signal is set to tape 3 to represent the mounting position.
The subhead 10 is then rewound to the position where the cue signal is read.

(b) If a cue signal is detected in the above, control circuit 1
4 first stops the running of the tape 3 at the position where the cue signal is read by the subhead] 0, and then, as shown in FIG. The rotary head cylinder 4 reproduces the recorded video signal by winding it and running it at a constant speed, and the reproduced video is quantized by the quantization circuit 12 and converted into a digital signal already stored in the storage means 11. A circuit 13 for identifying quantized video signals from a plurality of cassettes.
to search and identify the corresponding cassette.

After that, unless that set 1~ is ejected, when the cue signal is recorded, the video signal will be used as the corresponding cassette if there is a corresponding cassette, or as a new cassette if there is no corresponding cassette. The storage method of the storage means 11 is determined so as to store the video signal. Then, the main body 1 is fast-forwarded to the position where the first cue signal was recorded after the cassette was inserted, erases the record of the first cue signal recorded after the cassette is inserted, and then stops.

(3) If no cue signal is detected even after rewinding, the control circuit 14 stops the rewind operation for searching and shifts to fast forward operation, and then outputs the first cue signal after the cassette is loaded. If a record of another cue signal is searched in addition to the record of After winding at a predetermined angle, the vehicle is run at a constant speed, the video signal at the recording location of the detected cue signal is reproduced, and the quantized video signal and the plurality of video signals already stored in the storage means 11 are reproduced. By comparing the video signal of the cassette with the identification circuit 13, the corresponding cassette is searched.

identify

After that, unless that cassette is ejected once, a cue signal is recorded, and if there is a corresponding cassette, that video signal will be used as that cassette, or if there is no corresponding cassette, that video signal will be used as a new cassette. The storage method of the storage means 11 is determined so as to store the information. Then, the main body 1 fast-forwards to the position where the first cue signal is recorded after the cassette is inserted, erases the recording of the first cue signal after the cassette is inserted, and stops.

Furthermore, if the video signal when the cue signal is played back is identified as the video signal of the already stored cassette, and there are multiple corresponding cassettes, the control circuit 14 rewinds or fast-forwards the tape 3, searches for a cue signal that has a video signal that is different from the video signal for the cue signal that was played earlier, and combines the corresponding video signal with the multiple previously identified cue signals. The corresponding cassette is identified by comparing the video signal with that of the cassette. As a result, if a plurality of corresponding cassettes still exist, the above comparison is repeated to ensure identification. A control circuit 14 identifies the corresponding cassette and when a cue signal is recorded, controls the video signal to be stored in the storage means J1 as the corresponding cassette 1- unless the cassette is ejected from the main body 1.

(4) Other than the cue signal recorded when the cassette was installed,
If no cue signal has been recorded, the search is completed by fast-forwarding, the tape is rewound to the first cue signal recording position, the recording is erased and stopped by the subhead 10, and then the cue signal is recorded. In this case, the control circuit 14 controls the video signal to be stored in the storage means 11 as a new cassette, as long as the cassette is not ejected from the main body 1, as a video signal of the same cassette.

As described above, the corresponding cassette is identified, but when a cue signal is recorded using the cue signal recording button 15, it is recorded on the tape 3 by the subhead 10, and stored in the storage means 11 as a video signal of the corresponding cassette. is memorized.

Thereafter, by repeating this process, the cue signal is recorded, and the control circuit 14 controls so that the corresponding video signal is stored in the storage means 1 as data of the same tape.

Here, if you perform a stop operation using the function operation button 16,
The control circuit 14 records the cue signal, reproduces the video signal at that time, stops the tape 3, and controls the video signal to be stored in the storage means 11. Note that when the cassette is ejected, recording as a video signal of that cassette is stopped.

In this manner, the control circuit 14 assigns a number to the databased cassette, and the video signal is stored in the storage means 1 according to the number. It is displayed on the display section 17.

Although the present invention has been described in detail above, the recording of the cueing signal is not limited to the above example. For example, if the traveling system has a control head that records the control signal, the control pulse recorded by the control head can be recorded. You can record by changing the width within a compatible range instead of the standard width, record the cue signal with a head on a rotating head cylinder, or cue by superimposing it on the recording area of the video signal or audio signal. It may also be one that records signals;
Furthermore, it is clear that the video signal or identification signal when recording the one-head signal may be an audio signal. Furthermore, the recording method may be a fixed head, the storage means may be an external storage means that operates in conjunction with each other, or the storage means may be a memory such as a semiconductor, magnetic or optical element.

In the above embodiment, the cue signal recorded first after the cassette is loaded is erased, but this may not be erased, and the video signal at that time may be identified by an identification circuit and then stored as data for that cassette.

In addition, the first cue signal was recorded after the cassette was installed, but
For example, in a device that records control signals, the cassette may be returned to its original position by counting the number of control pulses.Furthermore, it is necessary for a person to determine whether or not there is a record on the cassette. Instead of having to install the tape with a tape running, it automatically makes a judgment based on whether or not the main signal is read out as the tape runs.
Alternatively, in a device that records control signals, automatic determination may be made based on whether the control head reads the control signal.

Finally, although the above explanation uses a VTR as an example, it is not limited to this, and can be applied to a DAT, a data streamer, etc. Also, the storage means may be a storage means that operates in conjunction with the main body, or a cueing signal may be used. contains the address code, records,
Reproduction may be performed using a timer.

(Effects of the Invention) As is clear from the above description, the present invention enables cassette identification to be performed using the video signal of the storage device and the recording location of the cassette cue signal, without having to run the entire tape as in the past. This is done by comparing the cue signal with the signal, and when the cue signal is recorded on the cassette, it is stored as the video signal of that cassette, and the cassette in which the cue signal is recorded is stored as a database. , the cassette number is displayed, making it easier to manage the cassettes. Further, since a cue signal is recorded when the cassette 1- is ejected, the cassette can be identified in a short time without rewinding, fast forwarding, etc., and great effects can be obtained by implementing the present invention.

[Brief explanation of the drawing]

Figure 1 is a plan view of an embodiment of the device of the present invention, Figure 2 is a block diagram, Figure 3 is a front view of the main body of the device, and Figure 4 is an explanatory diagram of the operation of an embodiment of the device of the present invention. be. 1. vTR main body (abbreviated as main body), 2. Mechanism section,
3. Magnetic tape (abbreviated as tape), 4. Rotating head cylinder (main signal recording and reproducing means), 5. Pinch roller, 6. Capstan motor, 7. Take-up reel, 8-. Supply reel. , 9... Loading means, 10. Subhead, 11... Storage means, 1
2. Quantization circuit, 13. Identification circuit, 14.. Control circuit, ]5.. Cue signal recording button, 16.. Function operation button, 17.. Display section.

Claims (1)

[Claims] In a magnetic recording and reproducing device, a main signal recording and reproducing means records and reproduces a main signal on a magnetic tape, a sub recording and reproducing means records and reproduces a cueing signal, and a main signal recording and reproducing means records and reproduces a cue signal when the sub recording and reproducing means records a cueing signal. A corresponding cassette is stored by comparing the main signal when the cueing signal is reproduced by a storage means for storing signals and a sub-recording/reproducing means with a plurality of main signals of the cassettes already stored in the storage means. What is claimed is: 1. A magnetic recording and reproducing apparatus comprising: identification means for identifying.