JPH0271447A - Recording and reproducing device - Google Patents

Abstract

PURPOSE:To prevent the erroneous cancellation of recording and recording stand-by operations by accident by inhibiting the selection of a mechanism equipped with a reproducing function while the other mechanism equipped with recording and reproducing functions is in the recording and recording stand-by operations. CONSTITUTION:The title device is equipped with a first mechanism 1 equipped with the reproducing function, a second mechanism 2 equipped with both recording and reproducing functions, selecting switches 4 and 5 to select one of the first and second mechanisms 1 and 2, and a set of control switches 8-12 of reproducing, fast forwarding, rewinding, recording and stop. As long as the second mechanism 2 is in a recording condition or a recording stand-by condition, the selection of the first mechanism 1 is inhibited. Thus, the danger of stopping an important recording by operating the control switches 8-12 by accident can be avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a magnetic recording and reproducing apparatus such as a compact cassette tape recorder and a digital audio tape recorder equipped with two mechanisms.

Prior Art FIG. 6 shows a diagram of a conventional two-mechanism control system. In FIG. 6, 1 is the first mechanism, 2 is the second mechanism, and 3 is the first mechanism. A control circuit composed of a microcomputer, a gate circuit, etc. that controls the second mechanism; 4 and 5 are selection switches for operating the first and second mechanisms, respectively;
Reference numeral 6 indicates a first display means such as a light emitting diode indicating that the operation of the first mechanism has been selected by the selection switch 4, and 7 indicates that the operation of the second mechanism has been selected by the selection switch 5. This is the second display means. 8, 9, 10, 11, and 12 are operation switches for playback, fast forward, two rewinds, recording, and stop, respectively. When a cassette tape is attached to the first mechanism 1 and it is operating, the selection display means 6 lights up, and the operation switches 8 to 1
When 2 is operated, the first mechanism 1 operates. To load the cassette tape into the second mechanism 2 and start the operation, operate the selection switch 5 to light the selection display means 7, and then operate the operation switches 8 to 12 to operate the second mechanism. I was letting it happen.

In addition, as a second conventional example, when one mechanism causes the other mechanism to perform track interval detection operation during fast forwarding or rewinding, the former mechanism detects the end of the tape; The problem is that it cannot be operated, or as a countermeasure, complicated interrupt control is required.

Problems to be Solved by the Invention As explained above, in the method in which the selection switch is used to switch the selection of the mechanism, and then the operation switch is used to switch the operation, for example, when the second mechanism is in the recording state or recording standby state, If the design was designed so that the first mechanism could be selected and operated, there was a risk of accidentally operating a stop switch or other operation switch before switching to the first mechanism, thereby interrupting important recording.

Moreover, in the second conventional example; +I! + If the open circuit is a microcomputer, it is extremely [Q miscellaneous interrupt; 1□ control, gate array circuit, etc., it is impossible to control two systems at the same time.However, with the control means, while one mechanism is being controlled, the other mechanism cannot be detected I had the disadvantage of not working.

The present invention addresses the above-mentioned problems, and firstly prevents the selection switch from selecting the first mechanism only when the second mechanism is in the recording state or in the recording standby state, thereby preventing erroneous operation. This is the purpose.

However, the second method is to fast-forward or rewind one mechanism from the playback state, or press the rewind operation button to perform the song interval detection operation, and at the same time automatically stop the other mechanism to ensure the former song interval detection operation. The purpose is to

Means for Solving the Problems In order to solve the above problems, the present invention has a double mechanism and a set of operating switches, which operate a selected one of the double mechanisms and then switch the selection to the other one. Although the other mechanism is operated at the same time, it is provided with a control means that prohibits the selection from being switched to the r mechanism during recording operation and recording standby operation.

Further, while both mechanisms are in operation, if one mechanism is switched to the song interval detection operation, the other mechanism is automatically stopped.

Effect The present invention has the above-described configuration, and in the first means,
During the recording and recording standby operations, selection of the other mechanism is prohibited to prevent erroneous release of the recording and recording standby operations, and in the second means, one mechanism is switched to the inter-song detection operation. At the same time, the other mechanism is always stopped.

Embodiment FIG. 1 shows an embodiment of the recording/reproducing apparatus of the present invention. Note that the same numbers are used for the same parts as in the conventional example.

In Figure 1, 1 is a first mechanism equipped with a playback function, 2 is a second mechanism equipped with a recording and playback function,
3 is a control circuit composed of a microcomputer, a gate circuit, etc.; 4 is a switch for selecting the first mechanism; 5 is a switch for selecting the second mechanism; 6
7 is a display means of WS1 indicating that the selection switch 4 has selected the first mechanism, and 7 is a second display means indicating that the selection switch 5 has selected the second mechanism. 8, 9, 10, 11.

Reference numerals 12 are operation switches for playback, fast forward, two rewinds, recording, and stop, respectively. Further, 13 is a playback head provided on the first mechanism 1, 14 is a recording and playback head that is connected to the second mechanism, and 15 is an analog switch for selecting one of the head outputs of 13 and 14. and
It is controlled by the output of the control circuit 3. 16 is a regenerative amplifier, which amplifies the output of 13 or 14 selected by 15; Reference numeral 17 denotes a song interval detection circuit, which is composed of a trigger circuit and a time constant circuit, and generates a pulse when a signal of a certain level is not input for a certain period of time, and inputs it to the control circuit 3. That is, when the fast forward or rewind button is operated from the playback state, the tape is fed at high speed with the head 13 or 14 still in light contact, and the tape moves from a state where a signal is recorded to a no-signal section, that is, between songs. When this continues for a certain period of time, the output of the detection circuit 17 is inverted, and in response to this signal, the control circuit 3 controls the corresponding mechanism 1 or 2 to enter the regeneration state.

FIG. 2 is a flowchart showing the first function of mechanism control according to the present invention. When the switch 6 for selecting the second mechanism is operated, NO in step 18,
If YES in step 19, proceed to step 2o, and
a second display means 7 indicating that the mechanism has been selected;
lights up. Next, in step 21, flag 1 indicating that the first mechanism has been selected is reset. In this state, if you operate any of the playback operation switch 8, fast forward operation switch 9, or rewind operation switch 1o, step 2
Proceed to YES in Step 5, and in Step 26, proceed to Step 21 first.
Since flag 1 is reset in step 28, the second mechanism is operated in step 28. When the recording operation switch 11 is operated with the second mechanism selected, the result is NO in step 25, YES in step 29, and N in step 30.

Step 31 sets a recording flag, and step 32 causes the second mechanism to perform a recording operation. If the first mechanism selection switch 4 is operated while the second mechanism is recording with the above series of operations, the process will proceed to YES in step 18, and in step 22, the recording flag will be set in step 31, so YES will be selected. , and the operation of the first mechanism is prohibited from being accepted. When the stop operation switch 12 is operated, the process proceeds to steps 35 and 36 with YES in step 33 and NO in step 34, where the recording flag is reset and the second mechanism is stopped.

When the second mechanism is in playback operation, for example, the first
When the mechanism selection switch 4 is operated, step 18
YES1 Step 22 N.

Then, in steps 23 and 24, the first mechanism selection display means is turned on and flag 1 is set. Subsequently, when the fast forward operation switch 9 is operated, the process proceeds to step 25 (YES), step 26 (YES), and in step 27 the first mechanism is operated in fast forward mode.

FIG. 3 is a flowchart illustrating the second function of mechanism control according to the present invention. Steps 37 and 38 are inter-track detection operations of the first mechanism and -tS2 mechanism, respectively, and mean operating the fast forward or rewind operation switch during the playback operation. When the second mechanism is operated to detect a song interval, the process advances to step 38 (YES), and in the inter-track detection operation, the playback head 13 or the recording/playback head 14 is brought into contact with the tape to speed up the tape. The output of 13 and 14 is passed through the analog switch 15 to pass the signal of whichever is operating.
A blank portion of the signal recorded on the tape, that is, a song interval is detected by the song interval detection circuit 17. Step 45 is to judge the output of the song interval detection circuit 17. If a song interval is detected, the answer is YES and the process proceeds to step 46. If the song interval detection operation is the first mechanism, flag 1 is set, so the switch 46 If the answer is YES, the process proceeds to step 48, where the first mechanism is operated for regeneration. If the song interval is not detected in step 45, the answer is No, and then in step 49, the operation of the operation switches 8, 9, 10, and 12 is checked. In other words, even if the tape is running during track interval detection, if a playback, fast forward, rewind, or stop operation is performed, the process immediately proceeds to step 60 with a YES response, and if the first mechanism is in the track interval detection operation, the process immediately proceeds to step 60. If step 60 is YES, step 61
The first mechanism is moved to the operating switch 8,9°10.
12. Operation switch 8, 9,
10. If there is no interruption due to 12, steps 45 and 49
The program waits until a gap between songs is detected.

Effects of the Invention According to the present invention, two mechanisms are operated by switching between them with a set of operation switches (1
1, the risk of interrupting recording is avoided by prohibiting the selection of the other mechanism when one mechanism is in a mixed sound standby state.

In addition, in the second invention, when two mechanisms are operating at the same time and one mechanism is operated to detect between songs, input processing of the control circuit becomes complicated, and processing in the gate array becomes particularly difficult. On the other hand, stopping the other mechanism has the effect of facilitating control.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the recording/reproducing device of the present invention, FIGS. 2a and 2b are flowcharts showing the processing procedure during operation of the first invention, and FIG. FIG. 4b is a flowchart showing the processing procedure during operation of the second invention, and FIG. 4 is a block diagram showing a conventional recording/reproducing apparatus. 1...First mechanism, 2...Second
mechanism, 3... control means, 4...
- First mechanism selection switch, 5...Second mechanism selection switch, e...First mechanism selection display means, 7...Second mechanism selection switch, 2 Mechanism selection display means, 8... Playback operation switch, 9... Fast forward operation switch, 10...
... Rewind operation switch, 11 ... Recording operation switch, 12 ... Stop operation switch, 13 ...
...First mechanism playback head, 14...
・Second mechanism recording/playback head, 15...
・・Analog Nuisochi, 16・・・・Regenerative amplifier,
17... Song 111 detection circuit. Name of agent: Patent attorney Shigetaka Awano and 1 other person1-
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Claims (2)

[Claims] (1) A first mechanism with a playback function, a second mechanism with both recording and playback functions, a selection switch for selecting either the first or second mechanism, and playback and fast forwarding. , a set of operating switches for rewinding, recording, and stopping, and after selecting the first or second mechanism with the selection switch, operating the operating switch to cause one of the mechanisms to perform a desired operation; Said second
1. A recording/reproducing apparatus comprising: a control means for selecting a first mechanism and prohibiting selection of the first mechanism in a recording state or a recording standby state even if the selection switch is operated. (2) a first mechanism with a playback function, a second mechanism with both recording and playback functions, a selection switch for selecting either the first or second mechanism, and playback and fast forwarding; , a set of operating switches for rewinding, recording, and stopping, and after selecting the first or second mechanism with the selection switch, operating the operating switch to cause one of the mechanisms to perform a desired operation; One mechanism is set to fast forward or rewind, and when the other mechanism is switched from the playback state to the inter-track detection state by operating the fast forward or rewind operation switch, the mechanism in the fast forward or rewind state is automatically stopped. What is claimed is: 1. A recording and reproducing apparatus characterized by comprising a control means for controlling.