JPH05290445A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To prevent erroneously recording a deteriorated magnetic tape by providing a bar code on the surface of each cassette case for the purpose of discriminating it individually and reading the bar code and then displaying the number of used times of its magnetic tape. CONSTITUTION:Each magnetic tape is discriminated by a bar code detecting part 8 with a bar code 2 provided on this magnetic tape 1 inserted into a VTR and its individual number of used times and cumulative used hours are read out of a memory 13 in a microcomputer system 10, and then one is added to a value of used times by a using frequency integrator 11. Afterward, individual cumulative hours in accordance with a time required for video recording/ reproducing on the magnetic tape are added by a used cumulative hour adder 12. In the case of displaying this used times and used cumulative hours are displayed on a monitor, the used time and used cumulative hours at the present time are calculated by a control system 14, and these are overlapped with a video signal from a video signal circuit 15 to be outputted from a signal output terminal 17 by a display circuit 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic recording / reproducing apparatus using a magnetic tape housed in a cassette case.

[0002]

2. Description of the Related Art As described in, for example, page 56 of the October 1991 issue of "Audio Video" (audio / video) magazine published by Denpa Shimbun, a conventional technique is a bar on the surface of a cassette case of a magnetic tape. There was a means to display the recorded contents, recorded channel, and date by discriminating each magnetic tape, but there is a means to discriminate each magnetic tape and display the number of times of use and accumulated use time. It was not used.

[0003]

In the prior art, however, there is no means for discriminating each magnetic tape and displaying the number of times of use and the cumulative use time as described above. Therefore, there is a problem in that the progress of deterioration of the magnetic tape is not known and the quality of the recorded and reproduced signal is deteriorated.

An object of the present invention is to prevent deterioration of the quality of a signal to be recorded / reproduced by displaying and clarifying the number of times each magnetic tape has been used and the cumulative time of use.

[0005]

In order to achieve the above object, a bar code is provided on the surface of a cassette case of a magnetic tape for discriminating the individual, and the magnetic recording / reproducing apparatus reads the bar code to use the individual magnetic tape. The number of times and the cumulative number of times of use are displayed.

[0006]

By displaying the number of times the magnetic tape has been used and the cumulative time of use, there is no risk of accidentally recording on a deteriorated magnetic tape.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. 1, 2 and 3 by taking a video tape recorder (hereinafter abbreviated as video) as an example. FIG. 1 is a magnetic tape in which a bar code showing an embodiment of the present invention is provided in a cassette case, FIG. 2 is an overall configuration diagram showing an embodiment of the present invention, and FIG. 3 is a circuit configuration showing an embodiment of the present invention. It is a figure. 1 is a magnetic tape, 2 is a bar code, 3 is a television (hereinafter abbreviated as TV), 4 is video, 5 is a remote control of video (hereinafter abbreviated as remote control), 6 is a tape status display button, and 7 is a tape insertion slot. ,
8 is a bar code detector, 9 is a tape status display example, 10
Is the entire microcomputer system system, 11 is the use frequency integrator, 1
2 is a cumulative use time accumulator, 13 is a memory, 14 is a control system, 15 is a video signal circuit, 16 is a display circuit, 17
Is a signal output terminal.

First, as shown in FIG. 1, a bar code 2 for identifying each tape is provided at the end of the label of the cassette case of the magnetic tape 1.

Next, an explanation will be given based on an example of connection between the television 3 and the video 4 shown in FIG. Now, the magnetic tape 1 is inserted through the insertion slot 7 of the video 4. At this time, the bar code detecting section 8 discriminates each magnetic tape from the bar code 2, and reads out the number of times of use and cumulative use time of each from the memory in the video 4 and adds one to the number of times of use. The number of times of use is the number of times the tape is inserted. Then, a tape state display example 9 showing the number of times of use and the cumulative use time is displayed on the screen of the television 3 for 7 seconds. After that, each cumulative time is added according to the time required for recording and reproducing the tape.

By pressing the tape status display button 6 provided on the video 4 and the remote controller 5, the status of the tape can be displayed for 7 seconds at any time.

Finally, a description will be given based on the circuit configuration diagram shown in FIG. Now, in the bar code detecting section 8, the individual magnetic tapes are discriminated from the bar code 2 provided on the magnetic tape 1 inserted in the VTR, and the respective number of times of use and cumulative use time are recorded from the memory 13 in the microcomputer system system 10. The read usage count integrator 11 adds one to the usage count value. Memory 1
3 has a capacity of 200 magnetic tapes. Thereafter, the cumulative cumulative time adder 12 adds respective cumulative times according to the time required for recording and reproducing the tape. When displaying the number of times of use and the accumulated use time on the monitor, the control system 14 calculates the number of times of use and the accumulated use time at the present time, and the display circuit 16 outputs a signal by superimposing it on the video signal from the video signal circuit 15. Output from terminal 17.

[0012]

As described above, according to the present invention, it is possible to easily know the number of times the tape has been used and the cumulative use time, and it is possible to prevent erroneous recording on a deteriorated tape.

[Brief description of drawings]

FIG. 1 is a diagram showing a magnetic tape in which a barcode according to an embodiment of the present invention is provided on a cassette case.

FIG. 2 is a diagram showing an example of video connection using the present invention.

FIG. 3 is a circuit configuration diagram of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Magnetic tape, 2 ... Bar code, 3 ... Television, 4 ... Video, 5 ... Video remote control, 6 ... Tape status display button, 7 ... Tape insertion port, 8 ... Bar code detection part, 9 ... Tape status table Example: 10 ... Entire microcomputer system system, 11 ... Use frequency integrator, 12 ... Use cumulative time integrator, 13 ... Memory, 14 ... Control system, 15 ... Video signal circuit, 16 ... Display circuit, 17 ... Signal output terminal.

Claims (4)

[Claims] 1. A magnetic recording / reproducing apparatus using a magnetic tape housed in a cassette case, wherein the cassette case of the magnetic tape is provided with means for discriminating each magnetic tape, and the magnetic recording / reproducing apparatus stores the individual magnetic tape. Discriminate and add the number of times that the magnetic tape was mounted in the magnetic recording and reproducing device,
A magnetic recording / reproducing apparatus characterized by displaying the number of times. 2. A magnetic recording / reproducing apparatus using a magnetic tape housed in a cassette case, wherein the cassette case of the magnetic tape is provided with means for discriminating individual magnetic tapes, and the magnetic recording / reproducing apparatus stores the individual magnetic tapes. Judgment and display one or three of the following three types: (a) cumulative time used for recording (b) cumulative time used for playback (c) cumulative time used for recording and playback. And a magnetic recording / reproducing apparatus. 3. A magnetic recording / reproducing apparatus according to claim 1 or 2, wherein a bar code is used as the discriminating means provided in the cassette case of the magnetic tape. 4. A magnetic recording / reproducing apparatus according to claim 1, wherein the discriminating means provided in the cassette case of the magnetic tape uses a magnetic detection system.