JPS63318882A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To automatically switch to a reproduction processing mode with the accurate timing by recording data corresponding to each reproduction process at a specific part on the extended line of each track in accordance with the video signal. CONSTITUTION:A user operates a switch 121 connected to an operation part 120 which works to switch a reproduction processor 115 while looking at the reproduced picture. A system controller 119 sends the information on the operation of the switch 121 to an ID device 127. The reproduction process switch data defined as the ID data by the device 127 is mixed with the audio PCM data as the additional data. These mixed data are recorded in the form of PCM signal. In a reproduction state, the ID data outputted from a PCM reproduction processor 125 is turned into the reproduction process switch data obtained in a recording state by an ID device 128. The system controller 119 switches the processor 115 via a switch 114 based on the input reproduction process switch data.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a magnetic recording/reproducing device capable of recording various data accompanying a video signal.

[Prior Art] In recent years, with the introduction of digital technology, magnetic recording and reproducing apparatuses (VTRs) have come to have a wide variety of reproduction processing methods.
Users can change the playback processing and video effects according to their personal preferences. The configuration of such a conventional magnetic recording and reproducing apparatus for video signals will be explained with reference to FIG.

In FIG. 5, a video signal input to a terminal 101 is converted into a signal form suitable for recording by a recording processing device 102 and becomes a recorded video signal. On the other hand, the audio signal input to the terminal 103 becomes a recording audio signal in the FM modulation processing device 104.

Then, the recording signal obtained by mixing the recorded video signal and the recorded audio signal by the adder 100 is sent to the head selector switch 10.
5, recording amplifiers 106, 107, and switch 124
The information is recorded on the magnetic tape 110 by the recording/reproducing heads 108 and 109 via the recording/reproducing heads 108 and 109. When playing, magnetic tape
The reproduction signal reproduced from O by the recording/reproduction heads 108 and 109 is sent to the switch 124 and the reproduction amplifier 111.
, 112, and head selector switch 113, and are separated into a reproduced video signal and a reproduced audio signal. The reproduced video signal is subjected to a reproduction process selected by a switch 114 (directly 115 ), and is outputted from a terminal 116 . On the other hand, the reproduced audio signal is converted into an audio signal by the FM demodulation processing device 117 and outputted from the terminal 118. The system controller 119 switches the switch 114 to the reproduction processing circuit desired by the user selected by the switch 121 of the operation unit 120. Furthermore, if it is necessary to control a mechanical section through playback processing such as a playback mode, the control is naturally performed.

[Problems to be Solved by the Invention] In the conventional magnetic recording/reproducing device as described above, various image processing is performed as stored in the field memory when reproducing the video signal recorded on the recording medium. However, in order to perform the same playback processing on the same recorded track portion, it is very troublesome and troublesome to perform the same operation every time. There was a problem that.

This invention was made in order to solve this problem.If you operate the same recording medium only once for the first time, it will automatically rotate and give the same instruction to the video signal part. It is an object of the present invention to provide a magnetic recording and reproducing device that can perform reproducing processing.

[Means for Solving the Problems] In order to achieve the above object, the magnetic recording and reproducing apparatus of the present invention performs a plurality of reproduction processes by attaching data corresponding to l to l to each track of the video signal. It has means for recording in a specific portion on the extension line, and means for detecting these accompanying data during reproduction and automatically switching the reproduction processing device.

[Function] With the above configuration, when reproducing the same recording medium, it is possible to automatically switch the reproducing process for the same recording track at the same timing every time.

[Embodiment] FIG. 1 is a block diagram of a magnetic recording and reproducing apparatus as an embodiment of the present invention. In FIG. 1, the same reference numerals as in FIG. 5 indicate the same or corresponding parts.

The audio signal inputted from the terminal 103 is inputted to the FM modulation processing device 104 and simultaneously inputted to the PCM recording processing device 123 via the switch 122 . This PCM recording processing device 123 converts the audio signal into digital data, adds an error correction code, performs time axis compression, modulation, etc.
Head changeover switch 105 and recording amplifier 106,1
07 and a switch 124, the data is recorded on the magnetic tape 110 by the recording/reproducing heads 108 and 109.

FIG. 2 shows the positional relationship of the recorded video signal and the recorded PCM signal on the magnetic tape 110. In FIG. 2, 41 is a magnetic tape, and 42 is a magnetic tape.
A portion 43 indicates a portion where one field worth of recorded video signal corresponding to a track is recorded, and 43 indicates a portion where one field worth of recorded PCM signal compressed on the time axis is recorded.

FIG. 3 shows the relationship between the tape 54 wound around the rotating drum 51 and the heads 55, 56. In FIG. 3, portions 52 and 53 are the portions 42 and 53 in FIG. 2, respectively.
．． It corresponds to 43.

As is clear from FIG. 3, when one magnetic head 56 is recording a portion 57 which is a recording portion of a recorded video signal, the other magnetic head 55 is recording a recording PCM signal on a portion 53 corresponding to a specific portion. will be recorded.

FIG. 4 shows magnetic heads 5 in these parts 57 and 53, respectively.
6.55 is a timing chart showing a recording state. Is it the video signal recording period of one magnetic head?61. PC
The M signal recording period is 63, and the similar periods of the other magnetic head are 62 and 64.

Returning the explanation to Figure 1 again. The timing change as shown in FIG. 4 is performed by controlling the system controller 119 or the switch 105. During reproduction, the magnetic head 10 for both recording and reproduction from the magnetic tape 110
The reproduction signal reproduced by 8,109 is sent to the reproduction amplifier 1.
11 and 112, a switch 113 separates the video signal and the FM audio signal into a combined signal and a PCM symbol. The explanation of the former is omitted because it is the same as the conventional example. The reproduced PCM signal is converted into an audio signal by the PCM reproduction processing device 125, and either FM audio or PCM audio is selected by the switch 126 and output from the terminal 11B.

Next, the operation when recording reproduction processing switching data will be explained. While viewing the reproduced image, the user operates a switch 121 connected to an operation unit 120 for switching the reproduction processing device 115. System controller 119 then sends this information to ID device 127. The playback processing switching data that has been converted into ID data by the ID device 127 is mixed with audio PCM data as accompanying data and recorded as a PCM signal. In this way, the operation of a VTR that records other information while playing back images is generally called "dubbing", or as mentioned above, "dubbing" is used to record data for switching playback processing. The operation when playing back the magnetic tape 110 will be explained. During playback, the ID data output from the PCM playback processing device 125 becomes playback processing switching data when recorded by the ID device 128. This data is sent to system controller 119. The system controller 119 switches the switch 11 according to the input reproduction processing switching data.
4, the reproduction processing device 115 is switched.

By configuring as described above, the user does not need to perform operations for switching playback processing each time to play back a tape. If you want to change the playback process or its timing, you can perform the above-mentioned "after-recording" operation again and rewrite the playback process switching data. Furthermore, since this data can be recorded for each track, that is, for each field of the image, control based on accurate timing is possible.

In the above embodiment, data corresponding to each reproduction process is recorded as PCM and ID data, or it is of course possible to record both data as PCM data.

[Effects of the Invention] As explained above, the magnetic recording and reproducing apparatus of the present invention records data corresponding to each reproduction process in a specific part on the extension line of each track along with a video signal, thereby achieving accurate data recording. This has the effect of automatically switching the playback process depending on the timing.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a magnetic recording/reproducing device as an embodiment of the present invention, Fig. 2 is a diagram showing the positional relationship of each recording pattern on a magnetic tape, and Fig. 3 is a diagram showing the magnetic tape wound on a rotating drum. Figure 4 is a diagram showing the relationship between the tape and the head; Figure 4 is a timing chart showing the recording state of the magnetic head in the area shown in Figure 3; Figure 5 is a schematic diagram of the main parts of a conventional magnetic recording/reproducing device. It is a block diagram. In the figure. 102: Recording processing device 104: FM modulation processing device 115: Reproduction processing device 117: FM demodulation processing circuit 119 System controller 120: Operation unit 121: Operation button 123: PCM recording and reproduction processing circuit 127.128: ID device

Claims (1)

[Claims] In a magnetic recording and reproducing apparatus that records and reproduces a plurality of tracks diagonally up and down using a recording medium that runs in the longitudinal direction and a head that rotates with respect to the running direction of the recording medium, video signals recorded on each of the tracks are Correspondingly, a magnetic recording and reproducing apparatus is characterized in that arbitrary data regarding reproduction processing is recorded in specific portions on extension lines of these tracks, and reproduction processing of each of the tracks is performed based on these data.