JPH0369043A - Magnetic recording and reproducing device - Google Patents

Abstract

PURPOSE:To confirm the frequency of a tape usage and to prevent the fault of a device due to the tape deterioration by automatically recording the times reproduced in the control signal area located on a tape in the device having the function repeatedly reproducing the specific part of the tape. CONSTITUTION:The counting values of the start point and finish point of a repeated reproduction are set on a counter data memory 6 from the start/finish points, first, to make a video tape recorder in a reproducing state, then it becomes in a repeated reproducing state between the start point and finish point. The times reproduced by a control head 1 via a VASS signal recording/ detecting circuit 2 are then recorded on the repeating part located on a video tape in every repeating time and also stored on a VASS data memory 3 and displayed on a display part 4. Consequently the tape usage frequency is confirmed and the fault of the device due to the tape deterioration can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic recording and reproducing apparatus that can repeatedly reproduce data recorded on a magnetic tape.

2. Description of the Related Art A conventional magnetic recording and reproducing apparatus (for example, a VTR) having a repeat reproduction function is shown in FIG.

In Fig. 3, 6 is a counter that counts up while the video tape is running, and 6 is a counter that stores preset counter values for the start and end points of repeated playback.
end point counter data memory; 7 is a counter data comparator that compares the counter value of the counter 6 and the memory 6;
8 is a travel control circuit that controls the travel of "/TH; 9 is a regeneration control signal output circuit that outputs a regeneration command to the travel control circuit 8 based on the output of the counter data comparator 7; and 10 is the output of the counter data comparator 7. This is a rewind control signal output circuit that outputs a rewind command to the traveling control circuit 8.

Next, the operation will be briefly explained according to the figure. 1. Counter values for the start and end points of repeated reproduction are set in the start and end point counter data memory 6 from the outside. Next, when the VTR is put into playback mode from the start point, the value of the counter 5 changes sequentially as the tape runs and is input to the counter data comparator 7, and each time the data is compared with the data in the start and end point counter data memory 6. be done.

When the reproduction state continues and the data on the counter 6 matches the end point data in the start/end point counter data memory 6, the counter data comparator 7 outputs the rewind control signal output circuit 1.
A control signal is output to rewind control signal output circuit 1.
o outputs a rewind command to the travel control circuit 8, and the VTR enters the rewind state.

Next, when the rewinding state continues, the data on the counter 6 and the data at the start point of the start/end point counter data memory 6 match, so a control signal is sent from the comparator 7 to the playback control signal output circuit 9. The reproduction control signal output circuit 9 outputs a reproduction command to the travel control circuit 8, and the VTR returns to the reproduction state.

By repeating this operation, the VTR operates in a repeat playback state.

There are methods that use the cue signal of a search system (search system) and methods that use the presence or absence of a video signal.

Problems to be Solved by the Invention However, a V with an automatic repeat playback function as described above.
In most cases, TR is used by first setting the start and end points and minutes of repeated playback, then playing back unattended, and using it for in-store advertising, etc. As a result, I don't know how many times I've played it repeatedly in a day, and furthermore,
It is impossible to check the video each time it is played back. Therefore, the number of plays increases without the user's knowledge, and the tape deteriorates, resulting in problems such as head clogging and abrasion.

In view of this, it is an object of the present invention to provide a magnetic recording and reproducing apparatus that can confirm the number of reproductions during repeated reproduction and that can prevent various problems caused by tape deterioration.

Means for Solving the Problems The present invention uses a magnetic recording and reproducing apparatus having a function of repeatedly reproducing a predetermined portion of a magnetic tape, and a first . A second control signal area is set, and the first control signal area is set during repeated playback. a control signal detection stage for reading out the second control signal; a memory for incrementing and storing a numerical value when the first control signal is read by the control signal detection means; The present invention is characterized by comprising a writing means for writing the numerical value held in the memory into the control signal area when the second control signal is detected, and a display section for displaying the numerical value held in the memory.

According to the present invention having such features, during repeated playback, when the first control signal is read out from the control signal detection means, the numerical value is incremented and stored in the memory, and the numerical value is displayed on the display unit. can be displayed. And the first. The numerical value held in the memory upon detection of the second control signal can be written into the control signal area of the magnetic tape.

Embodiment FIG. 1 shows an embodiment of the present invention, in which 1 is a control head, 2 is a VHSS signal recording and detection circuit,
4 is a memory for storing VASS recorded data, and 4 is a display unit for displaying the value of VASS recorded data. And VASS signal recording
As will be described later, the detection circuit 2 constitutes a writing means for writing a numerical value held in the memory 3 into the control signal area when detecting a control signal of the magnetic tape. Now, the other parts are the same as the conventional example described above, and 6
is a counter that counts up while the videotape is running,
Reference numeral 6 denotes a start/end point counter data memory for storing preset counter values for the start point and end point of repeated reproduction; 7 a counter data comparator for comparing the counter values of the counter 6 and the memory 6; 8; 9 is a reproduction control signal output circuit that outputs a reproduction command to the traveling control circuit 7 according to the output of the counter data comparator 7; 10 is a reproduction control signal output circuit that outputs a reproduction command to the traveling control circuit 7 according to the output of the counter data comparator This is a rewind control signal output circuit that outputs a rewind command to the control circuit 7. In this figure, the same elements as in the conventional example are given the same numbers.

Next, the operation will be explained according to the diagram. First, counter values for the start and end points of repeated reproduction are set in the start/end point counter data memory 6. Then, when the VTR is brought into the playback state from the start point, the counter data comparator 7 compares the data in the counter 6 and the data in the start/end point counter data memory e, as in the conventional example, and the data in the start/end point counter data memory 6 is compared. When the counter value of the start point or the end point matches, the reproduction control signal output circuit 9 or the rewind control signal output circuit 10 outputs a signal to the traveling control circuit 8, and when the counter value matches the start point, the reproduction ends. When it matches the point counter value, a rewind command is output and the VTR
is in a state of repeated playback.

Next, to explain using Fig. 2, first, let's say that the part on the videotape that you want to repeatedly play is between Moo B, then record the VHSS signal at two successive points at arbitrary X and τ points in between.・VAS by detection circuit 2 and control head 1
When the VTR is put into the playback state from the starting point M, the control signal read from the control head 1 is input to the VHSS signal recording/detection circuit 2, and is input to the VHSS signal recording/detection circuit 2. Detect the Vmu SS signal of "oooo".Then, the value plus 1 (
Here, "oool") is input into the VASS data memory 3.

Next, as the tape advances, when the control head 1 detects the VASS data recorded at the Y position, it automatically transfers that value to the value of the VASS data memory 3 ("0001").
Rewrite it to .

The reproducing state continues, and when the end point B-i is reached, the VTR enters a rewinding operation according to the above-mentioned repeated reproducing operation, and returns to the reproducing state from the starting point B-i. control head 1 again
When the Vm58 data recorded at the X position is detected, that value is transferred to the value of the VisS data memory 3.
oool" and increment the value of VASS data memory 3 by 1 (in this case "0002"). Next, the tape advances and when the VASS data recorded at position Y is detected, the value 1 is changed to the value of VASS data memory 3. "0002"
Rewrite it to . If the playback continues further, the v
The value of iss data memory 3 is increased, and this time "0002" is placed in the X position! The position is ゛”0003
" are recorded respectively. In this way, by first detecting the VASS data at the X position and changing the data to be rewritten to that value, the VASS data at the Y position is recorded.
The S data becomes the value of the number of times the tape is repeatedly played back, and at the same time, the value in the VisS data memory 3 can be displayed on the display section 4, so that the number of times the tape can be played back can be confirmed from outside the VTR.

- Even if you repeatedly play the tape after resetting the variable power supply or playing a different tape, the VASS at position X recorded on the tape first
Since the data is detected, the value in the VSS data memory 3 is changed in accordance with the detected value, and the X and Y VASS data are rewritten, it is possible to check the number of times the tape has been repeatedly played.

As described above, according to this embodiment, the vASS signal is recorded at two arbitrary locations between the start point and the end point of the button during repeated playback, and this signal is detected by the control head during playback. Depending on the number of times detected, VAS
By changing and rewriting the S data, the number of playbacks can be recorded on the videotape using VASS data.

Although this embodiment describes a VTR, it goes without saying that the present invention can be applied to a magnetic recording/reproducing device for audio.

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, the number of plays (for example, "0100" if played 100 times) is automatically recorded in the control signal area on the tape, and the value is displayed. By displaying the tape by section, you can check the frequency of use of the tape and prevent VT due to tape deterioration.
It is possible to prevent the failure of R, and its practical effect is great.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a magnetic recording/reproducing apparatus according to an embodiment of the present invention, FIG. 2 is an explanatory diagram of the operation of the same embodiment, and FIG. 3 is a block diagram of a conventional magnetic recording/reproducing apparatus. 1...control head, 2...v
iss signal recording/detection circuit, 3...VASS data memory, 4...display section.

Claims (1)

[Claims] In a magnetic recording and reproducing device having a function of repeatedly reproducing a predetermined portion of a magnetic tape, first and second control signal areas are set for recording numerical values at arbitrary positions within the repeating portion of the magnetic tape. a control signal detection means for reading the first and second control signals; a memory for incrementing and storing a numerical value when the first control signal is read by the control signal detection means; A magnetic recording and reproducing device characterized by comprising a writing means for writing a numerical value held in the memory into a control signal area when a second control signal is detected, and a display section for displaying the numerical value held in the memory. Device.