JPS6292294A - Tape editing device - Google Patents

Abstract

PURPOSE:To attain a reproduction and a recording only at an optional time by performing the mode control of a mechanism with a timer output. CONSTITUTION:When a requested recording time is set at a timer circuit 2 and the requested time is arrived, a signal is outputted from the circuit 2 and the signal is transferred from a mechanism control part 3 to a mechanism driving part 4, to rotate a head through a motor 5 and a cam 6, and a reproducing output by the first mechanism is recorded by the second mechanism. By setting the time of the circuit 2 optionally, the reproducing/recording time of the first mechanism can be set and only in the optional time, the reproduction and the recording are performed, a tape editing being performed easily and exactly.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a tape editing device equipped with two mechanisms.

Conventional technology In recent years, magnetic recording and reproducing devices equipped with two mechanisms have become mainstream, and they are also capable of reciprocating recording by switching between forward and reverse directions.
Magnetic tape editing is becoming more common.

FIG. 3 shows a conventional tape editing device. 3 is a mechanism control circuit, 4 is a mechanism drive section, 6 is a motor, e is a cam, 7 is a head rotation section, and 8 is a magnetic tape end detection circuit.

The operation of the tape editing apparatus configured as described above will be explained below.

First, when the end of the magnetic tape is reached while the magnetic tape is being reproduced by the first mechanism, the magnetic tape end detection circuit 8 operates via the mechanism drive section 4 and sends a signal to the mechanism control circuit 3. Then, a signal is sent from the mechanism control circuit 3 to the mechanism drive unit 4, and the motor 6
, rotates the head via the cam 6. FIG. 4 is a timing chart at that time. First, as shown in Figure 4A, the first mechanism plays back side A of the magnetic tape for a playing time
1, the end of the magnetic tape is reached, and the head rotates to reproduce the playback time t2 of side B. At that time,
As shown in FIG. 4, the information recorded on the magnetic tape of the first mechanism is recorded on the magnetic tape by the second mechanism, and a recording time of 11.12 is recorded.

Problems to be Solved by the Invention However, in the configuration described above, since the control for switching between the forward and reverse directions is performed by the end detection circuit of the magnetic tape, it is possible to record side A only for a desired time and then record side B. The problem was that it was impossible to record.

The present invention solves these conventional problems and provides a tape editing device that has a simple configuration and is capable of mode control such as switching between normal and reverse directions at arbitrarily set times.

Means for Solving the Problems In order to solve the above problems, the tape editing device of the present invention controls modes such as switching the tape playback mechanism between forward and reverse directions using a timer output obtained by arbitrarily setting a timer one hour. It is configured to do the following.

Function: With the above-described configuration, the present invention can record on a desired side of a magnetic tape only for a predetermined period of time.

Embodiments Hereinafter, tape editing apparatuses according to embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows a block diagram of a tape editing device in one embodiment of the present invention. In FIG. 1, the circuit is constructed by connecting a timer circuit to a conventional circuit.

First, a desired recording time provided in the first mechanism is set in the timer circuit 2. Then, when the desired time is reached, a signal is output from the timer circuit 2 and sent to the mechanism control circuit 3. Next, the mechanism control circuit 3 that receives the signal transmits the signal to the mechanism drive unit 4. Then, the mechanism drive unit 4 rotates the head via the motor 6 and cam 6. By arbitrarily selecting the setting time of the timer, the direct/reverse time of the first mechanism can be set.

FIG. 2 is a timing chart of the present invention.

As shown in FIG. 2A, side A of the magnetic tape of the first mechanism is reproduced for a reproduction time t1, and then the head is rotated to reproduce it for a time t3. At this time, as shown in the second drawing, 11. is reproduced on the magnetic tape by the second mechanism.
13 Record the hours continuously.

Also, as shown at the beginning of Figure 2, side A is reproduced for a reproduction time t1. Next, it is fast-forwarded by time t2, and at the end, the head is reversed to play back side B at time t3. Further, as shown in FIG. 2C, side A of the magnetic tape is reproduced for only 11 hours, the head is reversed, and time t4 of side B is fast-forwarded and only time t3 is reproduced. When fast forwarding like this, the recording mechanism is temporarily stopped.

As described above, according to this embodiment, by providing a timer for switching the mode of the mechanism, the extra playback time t2. t4 can be omitted.

Effects of the Invention As described above, the present invention controls the mode of the mechanism using the timer output, so that playback can be performed only for an arbitrary set time.
It can be recorded.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the tape editing device of the present invention, FIG. 2 is a timing chart thereof, FIG. 3 is a block diagram of a conventional tape editing device, and FIG. 4 is a timing chart thereof. 2... Timer circuit, 3... Mechanism control circuit, 4... Mechanism drive unit, 8... Magnetic tape end detection circuit. Name of agent: Patent attorney Toshio Nakao and 1 other person”
゛ Side B←−1−−−−←Aflies rJ Figure 3 Figure 4

Claims (1)

[Claims] It has a tape playback mechanism that drives the magnetic tape in both forward and reverse directions, a tape recording mechanism that records the playback signal from this tape playback mechanism, and a timer that can set an arbitrary time. A tape editing device characterized in that modes such as reverse direction switching are temporally controlled by the output of the timer.