JPH0654559B2 - Tape recorder - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auto-reverse type tape recorder having a timer recording function.

2. Description of the Related Art In recent years, tape recorders have been recorded over a long period of time due to feathering and air checking of FM broadcasts, and the popularization of automatic reverse logic tape recorders that automatically switch from normal recording to reverse recording of tapes. There are some remarkable things to turn.

FIG. 3 shows a conventional tape recorder. In the case of normal rotation recording, the head 7 and the tape 5 are moved by moving the head substrate 6 of the mechanism unit 1 in accordance with the normal rotation recording command from the running control unit 2. And the tape 5 is run in the forward direction. In the case of reverse recording, the head substrate 6 of the mechanism unit 1 is moved by the reverse recording command from the running control unit 2 to bring the head 7 into contact with the tape 5, and the tape 5 is run in the reverse direction. At the time of absence recording, the power is turned on from the timer at a predetermined time and the timer recording switch 3
In response to the ON command, the running control unit 2 gives a normal rotation recording command to the mechanism unit 1 to start normal recording and when the tape reaches the end, an inversion command is input from the mechanism unit 1 to the running control unit 2 and The traveling control unit 2 gives a reverse recording command to the mechanism 1 to start reverse recording. When the timer recording switch 3 is off, the forward recording command is not issued from the traveling control unit 2 to the mechanism unit 1 even if the power is turned on.

Problems to be Solved by the Invention However, in such a conventional auto-reverse logic control configuration, since there is no detection circuit for the forward rotation direction and the reverse rotation direction, it is necessary to start timer recording from the forward rotation direction when the power is turned on. is there. Therefore, if the timer recording is turned off and the power is turned off during the reverse recording, and the second timer recording is turned on and the power is turned on while the timer recording switch 3 is still on, the traveling control unit 2 issues a forward recording command. It has a problem that it erases the information that was recorded in the previous normal direction.

The present invention has been made in view of the above circumstances, and provides an auto-reverse logic control tape recorder which can prevent a second timer recording with a simple structure and can safely record an absence message for a user. Has an aim.

Means for Solving the Problems In order to solve the above problems, the present invention maintains a tape running state when the power is turned off from the tape running state, and a command of a tape running mode switch for detecting the running state, The logic of the timer recording switch prevents the traveling control unit from issuing a recording traveling command to the mechanism unit.

Operation With the above-described configuration, the present invention reliably accepts the second timer recording even if the timer recording power is turned off during the reverse recording while the reverse recording is running and the power is turned on for the second timer recording. It is configured so that it can be recorded safely even by people using a multi-timer (a timer that can be turned on and off multiple times).

Embodiment FIG. 1 shows an embodiment of the tape recorder of the present invention.

The mechanism unit 1, the traveling control unit 2, the timer recording switch 3, the tape 5, the head substrate 6, and the head 7 are the same as the operations described in the conventional example.

The traveling mode switch 4 is interlocked with the head substrate 6, and is arranged so that the traveling mode switch is brought into contact with the side a in the normal rotation and reverse recording states, and is brought into contact with the side b in the stopped state. Further, the logic of the command of the traveling mode switch 4 and the command of the timer recording switch 3 is performed in the traveling control unit 2.

When recording an absence while the traveling mode switch 4 is on the b side (stopped state), the power is turned on by a timer for a predetermined time, and the logical operation of the b side command of the traveling mode switch 4 and the ON command of the timer recording switch 3 is performed. Then, the traveling control unit 2
A normal recording command is given to mechanism 1 as in the conventional example. When the timer recording is turned off from the recording state and the power is turned off, the traveling control unit 2 does not issue any command, and the mechanism unit 1 is maintained in the recording traveling state even after the power is turned off. Therefore, the traveling mode switch 4 is in contact with the side a. Then the second timer recording is O in that state.
When the power is turned on due to N, the running mode switch 4a
Since the traveling control unit 2 is configured not to give the normal recording command to the mechanism by the logic of the side command and the ON command of the timer recording switch 3, it cannot accept the second timer recording.

FIG. 2 shows another embodiment of the present invention, in which the switch circuit logic is configured to block the ON command of the timer recording switch 3 by the running mode switch 4.

Also, the logic control mechanism controlled by a microcomputer controls the running mode and the time from the stopped state to the recording running state. Therefore, the running mode switch 4 is always attached and should be used. Thus, the configuration of this embodiment can be easily realized without increasing the cost.

Effects of the Invention As described above, according to the present invention, when a tape recorder using an auto reverse logic control mechanism is used for long-term absence recording, timer recording is turned off during reverse recording and the power is turned off. This is a very useful practical tape recorder that can be provided at a low cost and never loses the important recording information in the forward direction by mistake when the timer recording is performed for the second time.

[Brief description of drawings]

FIG. 1 is a block diagram showing a tape recorder according to an embodiment of the present invention, FIG. 2 is a block diagram showing another embodiment of the present invention, and FIG. 3 is a block diagram showing a conventional tape recorder. 1 ... Mechanism part, 2 ... Running control part, 3 ... Timer recording switch, 4 ... Running mode switch.

Claims (1)

[Claims] 1. A mechanism section having a head substrate, a running mode switch for detecting a tape running state of the mechanism section, and a running control section for issuing a timer recording command including a forward running state of the tape to the mechanism section. A timer recording switch that is turned on when the set time of the timer arrives and turns on the power, the mechanism section maintains the tape running state when the power is turned off in the tape running state, and the running control section outputs the running mode switch. Is a tape recorder in which the timer recording command is issued by the timer recording switch when the tape is not running and the timer recording command is controlled so that the output of the running mode switch is not issued by the timer recording switch when the tape is running.