JPS60131692A - Tape counter controller - Google Patents

Abstract

PURPOSE:To enable coincidence of tape position and number of counts by inputting record counter value to a resetting circuit or rewinding to detection of a leader tape when inputting a detection signal, and recording serial data in a tape when recording sound, etc. CONSTITUTION:When count value is detected in a reproduced signal from a head 10, a counter 6 outputs a detection signal to a controller 2 and stops running of the tape. When rewound to starting end of the tape without detecting count value, a signal is outputted from a leader tape detecting circuit 9 and the counter is made zero. When recording picture, sound, etc., output signals from a mechanism controlling circuit are inputted to a controller 2, and a switch 3 is changed to a serial conversion circuit 7 side for a fixed time, and indicated value of the counter 6 is converted to serial data and recorded. As the starting end of the tape is made zero when loading a new tape, access of the tape can be made at a fixed value at all times.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a Dave counter control I device for controlling a tape counter for displaying the tape position of an audio tape recorder or a video tape recorder.

Conventional Structures and Problems Conventionally, audio tape recorders have used tape counters to display the position where the tape hits the recording or reproducing head. 7- The counter has both supply and take-up reels,
There are methods that receive reel rotation pulses from the reel and calculate the tape feed operation in terms of time, methods that calculate the number of revolutions of the take-up reel as a count number, and in video tape recorders, control pulses on the control track are counted. There is a way to display it in hours. There are two types of counters that count the number of rotations of the take-up reel: mechanical and electronic. In the mechanical type, the rotation of the take-up reel is transmitted through a rubber belt or the like to operate the counter. With this method, the display position accuracy is low because the one-rotation transmission system slips, but with the electronic method, the rotation of the take-up reel is detected without contact, so accuracy is high.

However, in either method, unless the tape is rewound to the starting position when the tape is inserted and the tape counter is reset to a constant value, it is extremely rare for the tape position to always match the count number on the counter.

OBJECTS OF THE INVENTION The present invention has been made to overcome the above-mentioned drawbacks of the conventional art, and it is an object of the present invention to provide a tape counter control device that can always match the tape position and the count number of the tape counter.

Structure of the Invention In order to achieve the above object, the tape counter control device of the present invention includes a tape detection means for detecting the attachment of a tape to an audio tape recorder or a video tape recorder, a leader tape detection means for detecting a leader tape, and a counter. a serial converter circuit that converts the value of the data into binary serial data and supplies it to the head; and a serial converter circuit that converts the serial data reproduced by the head into a count value to be displayed on the counter and sets it on the counter, and the leader tape. a reset circuit that sets the counter to zero in response to a signal from the detection means; a first switch means that disconnects and disconnects the connection between the serial conversion circuit and the head; and a second switch that disconnects and disconnects the connection between the reset circuit and the head. switch means, and a controller for controlling tape running and operating the first and second switch means; when the controller receives a signal from the tape detecting means, the controller detects that the tape is recorded on F. The second switch means is operated and the tape is rewound until the counter value is input to the reset circuit or the leader tape detection means detects the leader tape, and the audio, video, etc. The recording feature is 8, in which the serial data from the serial conversion circuit is recorded on the tape by operating the first switch means for a predetermined period of time.

DESCRIPTION OF EMBODIMENTS A third embodiment of the present invention will be described below with reference to the drawings.

The drawing is a circuit block diagram of a tape counter control device according to an embodiment of the present invention, in which 1 is a tape sensor that outputs a signal when tape A is loaded, 2 is a tape sensor that outputs a signal when tape '4A' is loaded.
At the time of arrival, when the leader table is detected, and when the counter reset is detected, press the first and second changeover switches 3.4,
controller 5 outputs signals to a mechanism control circuit (not shown) to rewind the tape and stop tape running; when it detects the count value of the counter 6 on the tape, it sets the counter 6 to that value. 7 is a serial conversion circuit that converts the count value displayed on the counter 6 into binary serial data, and 8 is a serial conversion circuit that sets the counter 6 to zero □ when the leader tape is detected. A leader tape detection sensor that detects a leader tape, 9 is a leader tape detection circuit, 1o
1 is a head, 11 is a recording circuit, and 12 is a reproduction amplifier.

The first selector switch 3 switches the serial converter circuit 7 to the head for a certain period of time in response to signals from the controllers 1 to 2 when recording a program, and the second selector switch 4 switches the serial converter circuit 7 to the head for a certain period of time when recording a program. During the return run, the head output signal is switched to the reset circuit 5 side. Note that the counter 6 is a normal electronic counter.

When tape 8 is installed, controllers 1 to 0-ra 2 are attached to tape A.
A signal for rewinding the tape A is output to the mechanism control circuit (V in the figure), and the tape A starts rewinding. The controller 2 outputs a signal for switching the second changeover switch 4 to the reset circuit 5 side so that the signal on the tape A is output to the reset circuit 5. When the count value of the counter 6 is detected in the reproduction signal from the head 10, the counter 6 is set to that value, a signal indicating that the count value has been detected is output to the controller 2, and tape running is stopped. Then, the second changeover switch 14 is switched to the regenerative amplifier 12 side. When the tape is rewound to the beginning without a count value being detected, the leader tape detection sensor 8 is activated, a signal is output from the leader tape detection circuit 9, and the reset circuit 5 is activated to set the counter 6 to zero. The controller 2 receiving the same signal sends a stop signal to the mechanism control circuit and switches the second changeover switch 4 to the regenerative amplifier 6 side.

On the other hand, when recording video, audio, etc., the signal output from the mechanism control circuit is sent to the controller 2.
is input, and the controller 2 switches the first changeover switch 3 to the serial conversion circuit 10 side for a certain period of time. The value displayed on the counter 6 is the value displayed on the serial conversion circuit 10.
The data is converted into binary serial data and recorded on the tape A by the head 10. After a certain period of time has elapsed, the controller 2 again switches the first changeover switch 3 to the recording circuit 11.
switch to the side and perform normal recording.

In this way, when a new tape is loaded into an audio tape recorder or video tape recorder, the counter 6 is automatically set so that the beginning of the tape always reaches zero. Access to the position can be performed by referring to the count value displayed on the counter 6, which is always a constant value.

As described in the detailed description of the invention, if the present invention is used, the tape position where the head is hitting and the value of the tape counter can always be automatically determined without having to manually return to the beginning of the tape and reset the counter to zero. Can be matched. Therefore, for example, by storing the count value at the beginning of a program, it is possible to easily locate the beginning of the program, and to access any position on the tape.

[Brief explanation of the drawing]

The drawing shows tape counter control v in one embodiment of the present invention.
FIG. 3 is a circuit block diagram of the device. 1...Tape sensor, 2...Controller, 3.
...First changeover switch, 4...Second changeover switch, 5...Reset circuit, 6...Counter, 7...
Serial conversion circuit, 8... Leader tape detection sensor, 9... Leader tape detection circuit, 10... Head, 11... Recording circuit, 12... Reproduction amplifier, A.
...Tape agent Yoshihiro Morimoto

Claims (1)

[Claims] 1.7f-tape detecting means for detecting tape attachment to a dio tape recorder or a dio tape recorder;
a leader tape detecting means for detecting a leader tape;
a serial conversion circuit that converts a counter value into binary serial data and supplies it to the head; and a serial conversion circuit that converts the serial data reproduced by the head into a count value to be displayed on the counter 95 and sets it in the counter and the leader tape. A reset circuit that sets the counter to zero based on a signal from the detection means, a first switch means that connects and disconnects the serial conversion circuit to the head, and a first switch that connects the reset circuit and the head. The controller includes a second switching means that is turned on and off, and a controller that controls tape running and operates the first and second switching means; When the counter value recorded on the tape is input to the reset circuit, the second switch means is operated and the tape is wound until the counter value recorded on the tape is input to the reset circuit or until the leader tape detection means detects the leader tape. A tape counter control configured to run the serial data from the serial conversion circuit on the tape by operating the first switch means for a predetermined time when recording audio, video, etc. Device.