JP2520593Y2 - Recording and playback device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A Field of Industrial Application The present invention relates to a recording / reproducing apparatus, and is particularly suitable for application when controlling the power supply of the recording / reproducing apparatus in response to a stop control operation input.

B Outline of the Invention The present invention is directed to a case where no new operation input other than the stop control is made in the recording / reproducing apparatus until a predetermined time elapses from the timing when the recording / reproducing apparatus is stop-controlled by the operation input. In this case, the power supply to the recording / reproducing device is turned off, and conversely, when a new operation input other than the stop control is made, the power supply to the recording / reproducing device is not turned off to stop the recording / reproducing device. Immediately thereafter, when a new operation input other than the stop control is made, the recording / reproducing apparatus can be continuously supplied with power to control the operation state according to the new operation input.

In addition to this, when a new operation input other than the stop control is made within a predetermined time after the stop control of the recording / reproduction apparatus, the power supply to the recording / reproduction apparatus is not turned off. By reducing the number of times data is saved to the storage means by controlling the above-mentioned control, the number of storage updates of the storage means is reduced, the durability of the storage means is improved, and the reliability of the entire recording / reproducing apparatus is improved. Can be significantly improved.

C Conventional Technology Conventionally, in a small tape recorder or the like as a recording / reproducing apparatus, for example, since it is driven by a 1.5 [V] dry battery, there is no power switch, and a reproduction key, a fast forward key, a rewind key,
Each time the recording key or the like is operated, power is supplied to the tape recorder and the operation corresponding to each operation key is executed.

Further, when the tape recorder is operated for reproduction, fast-forwarding, rewinding, recording, etc., the power supply is stopped immediately when the stop key is operated, whereby unnecessary power consumption can be prevented.

D Problems to be solved by the invention By the way, in such a small tape recorder, for example, in the case of a rotary head type digital audio tape recorder (DAT), since the recording / reproducing signal is handled as digital data, In order to obtain an internal power source of 3 to 5 [V] from a power source of a dry battery of 1.5 [V], the so-called DC-DC converter is used. ing.

However, in order for the DC-DC converter to actually operate, a rise time of several 100 [ms] is required, and when the stop key is operated as described above, the power supply to the tape recorder is immediately stopped. For example, in the case of repeatedly executing the playback operation and the stop operation and the recording operation and the stop operation, the rising time cannot be ignored, and the reproduction and the recording cannot be performed during this rising time, which is convenient for the user. I had a bad problem.

Immediately after the stop key is operated in the DAT with such a configuration, the minimum necessary data such as the operating state is stored in NVRAM (non v
Some are designed to save data in olatile random access memory), but in this case, if the save operation is repeated in NVRAM every time the stop key is operated, the number of NVRAM writes that is compensated for about 10,000 times is easy. Has reached N,
In some cases, there was a problem with durability itself such as the destruction of VRAM cells.

The present invention has been made in consideration of the above points, and is intended to propose a recording / reproducing apparatus capable of optimally controlling the power supply with a simple configuration and improving the reliability of the entire apparatus. .

E Means for Solving the Problems In order to solve the problems, in the present invention, in the recording / reproducing apparatus in which the power supply is controlled according to the operation input 9F of the stop control, the power _Vcc is supplied to the recording / reproducing apparatus. Detection signal for detecting that a predetermined time has elapsed from the timing at which the recording / reproducing apparatus was stopped and controlled by the power supply means 5 for controlling the power supply means 5, the switch means 4 for controlling the power supply means 5 on and off, and the operation input 9F for stop control. a timer means 6 outputs a S _CR, a storage unit for holding at least saving the operating state data of the stop control previous recording and reproducing apparatus when turning off the power supply means 5 in accordance with the stop control, the timer means 6 when the Yotsute predetermined time has elapsed a new operation input 9A~9E non stop control has failed made up is detected, the power supply after a predetermined time has elapsed in accordance with the detection signal S _CR When the switch means 4 is controlled so that the means 5 is turned off, and new operation inputs 9A to 9E other than the stop control are made before the timer means 6 detects that the predetermined time has elapsed. By resetting the timer means 6, the power supply means 5 is controlled so as not to be turned off, thereby reducing the number of times data is saved to the storage means.
And 10 are provided.

If new operation inputs 9A to 9E other than the stop control are not made within a predetermined time from the timing at which the recording / reproducing apparatus is stop-controlled by the F-action operation input 9F,
When the power supply _Vcc supplied to the recording / playback device is turned off and conversely new operation inputs 9A to 9E other than the stop control are made, the power supply _Vcc supplied to the recording / playback device is not turned off. After the recording / playback device is stopped by the 9F, if a new operation input 9A to 9E is immediately made, the power supply _Vcc is continuously supplied to the recording / playback device, and the new operation input 9A to 9E is supplied.
The operating state can be controlled according to E.

In addition to this, when a new operation input 9A to 9E other than the stop control is made within a predetermined time from the timing when the recording / reproduction apparatus is stop-controlled, the power supply to the recording / reproduction apparatus is supplied. By controlling not to turn off _Vcc , the number of times data is saved to the storage means is reduced, the number of storage updates of the storage means is reduced, and the durability of the storage means is improved. The reliability as a whole can be significantly improved.

G Embodiment Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

In the figure, reference numeral 1 denotes a power supply device for supplying power to the DTA as a whole, which supplies a power supply voltage + B obtained from a 1.5 [V] dry battery 2 to an input control circuit 3 and a DC-DC converter 5 through a switch circuit 4. Supply.

This DC-DC converter 5 has a power supply voltage of 1.5 [V] + B
The have been made to convert the internal power supply V _cc made by voltage of, for example, 5 V, the internal power supply V _cc timer circuit 6
And the DAT signal processing unit 7 and the DAT mechanical drive processing unit 8.

In the case of this power supply device 1, the input control circuit 3 uses the reproduction key 9
A, a fast forward key 9B, a rewind key 9C, a pause key 9D and a recording key 9E are provided, and the DAT signal processing unit 7 and the DAT mechanical drive processing are performed while any of the operation keys 9A to 9E is operated. An operation mode signal S _MOD corresponding to the operation keys 9A to 9E is sent to the section 8.

In addition to this, in the input control circuit 3, an operation state signal S _OPR having a logical “H” level is input to the timer circuit 6 while any of the operation keys 9A to 9E is operated. It is sent to the OR circuit 10.

The operation keys 9A to 9E are mechanically controlled stop keys.
When 9F is operated, the rugged state is released no matter which one is operated.

Here, the timer circuit 6 has, for example, a counter structure, and the operation state signal S _OPR is input to the reset input terminal of the counter.

Actually, the counter of the timer circuit 6 performs a count-up operation according to the clock CK input to the clock input terminal during the period in which the operation state signal _SOPR has the logic "L" level, and as a result, the counter overflows. Correspondingly, a carry signal S _CR which falls from the logic "H" level to the logic "L" level after a lapse of a predetermined time is supplied to the OR circuit 10.

The OR circuit 10 controls the switch circuit 4 to be in the ON state during the period in which either the operation state signal S _OPR or the carry signal S _CR has the logic “H” level, and the operation state signal S _OPR and the carry signal S _CR are controlled. A switch control signal for controlling the switch circuit 4 to be off during a period in which both _CRs have a logic "L" level.
_Send S _CNT .

In the above configuration, first, when the DTA is in the stopped state, the switch circuit 4 of the power supply device 1 is controlled to be in the off state.

When any of the operation keys 9A to 9E is input in this state, the operation state signal S _OPR sent from the input control circuit 3 rises to the logic “H” level, and as a result, the switch control signal S _CNT changes to the logic “H” level. The switch circuit 4 is controlled to the ON state by rising to the "H" level.

As a result, the DC-DC converter 5 subsequently rises,
An internal power supply _Vcc of 5 [V] is supplied to the DAT signal processing unit 7 and the DAT mechanical drive processing unit 8, and thus the entire DAT is operated by the operation key 9
Start operation according to A-9E.

At this time, the internal power supply V _cc is also supplied to the timer circuit 6, but since the operation state signal S _OPR input to the timer circuit 6 has a logic “H” level, the timer circuit 6 operates to count. Have stopped.

If the stop key 9F is operated while the entire DAT is operating in accordance with the operation keys 9A to 9E, the ON state of the operation keys 9A to 9E is released and the operation control circuit 3 sends the operation keys 9A to 9E. The operating state signal S _OPR is turned to the logic "H" level.

At this time, the carry signal S _CR having the logic “H” level is sent from the timer circuit 6, and the switch control signal S _CNT is kept at the logic “H” level, whereby the switch circuit 4 is turned on. Held in a state.

At this time, the operating state signal S _OPR falls to the logic "L" level, the reset state of the counter of the timer circuit 6 is released, and as a result, the counting operation is started.

As a result, the count value of the counter overflows after a predetermined time has elapsed, and when the carry signal S _CR falls from the "H" level to the logic "L" level, the switch control signal S _CNT sent from the OR circuit 10 The logic "H" level falls to the logic "L" level, and as a result, the switch circuit 4
Is controlled to the off state, and the entire DAT is controlled to the off state.

Note that before the timer circuit 6 is the count value when counting operation is overflow, when any one of the operation keys 9A~9E is operated input, operation status signal S _OPR is logic "L" logic level to "H" When the level is raised, the timer circuit 6 is reset, so that the DAT does not control the switch circuit 4 to be in the off state, and the new operation key 9A
Actions depending on ~ 9E can be started immediately.

With the above configuration, the DAT can be activated by pressing the stop key 9F.
When the operation input of new operation keys 9A to 9E other than the stop key 9F is not made within a predetermined time from the timing when the stop control is performed, the power supply + B supplied to the DAT is turned off, and conversely for a predetermined time. New operation keys 9A to 9E other than the stop key 9F
When is input, the power supply + B supplied to the DAT is not shut off, so that even if a new operation is input immediately after the DAT is stop-controlled with a simple configuration, DA
It is possible to realize the power supply device 1 that can immediately control T to the operating state in which the operation is input, and thus the usability for the user can be significantly improved.

Further, according to the above configuration, it is possible to prevent the state in which the power supply of the DAT is unnecessarily turned off, thereby reducing the number of saves to the NVRAM each time the stop key is operated. It is possible to realize a DAT that has improved durability and significantly improved reliability of the entire device.

In the above embodiment, the case where the timer circuit 6 is composed of a counter has been described, but the present invention is not limited to this and the time data in the DAT is referred to to measure the elapse of a predetermined time from the timing when the DAT is stop-controlled. It may be done.

Further, in the above-described embodiment, the case where the operation state of the other operation keys 9A to 9E is canceled by the operation of the stop key 9F mechanically controlled has been described. Not limited to this, the same effect as that of the above-described embodiment can be realized even if the operation state of the operation keys 9A to 9E is released by another means such as an analog switch or a combination of logic circuits.

Further, in the above-mentioned embodiments, the case where the present invention is applied to the DAT is described, but the present invention is not limited to this, and is widely applied to recording / reproducing devices such as audio tape recorder devices, compact disc devices and video tape recorder devices. It is suitable for application.

H Effect of the Invention As described above, according to the present invention, no new operation input other than the stop control is made before the predetermined time elapses from the timing when the recording / reproducing apparatus is stop-controlled by the operation input. In this case, the power supply to the recording / reproducing apparatus is turned off, and conversely, when a new operation input other than the stop control is made, the power supply to the recording / reproducing apparatus is not turned off and the data to the storage means is not turned off. By reducing the number of evacuation, the recording / playback device is stopped, and if a new operation input other than the stop control is immediately made, power is continuously supplied to the recording / playback device to operate according to the new operation input. The state of the storage means can be controlled and the durability of the storage means can be improved.
As a result, it is possible to realize a recording / reproducing apparatus that can optimally control the power supply with a simple structure and improve the reliability of the entire apparatus.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a power supply device according to the present invention. 1 ... Power supply device, 2 ... Power supply, 3 ... Input control circuit, 4
...... Switch circuit, 5 ... DC-DC converter, 6 ... Timer circuit, 7 ... DAT signal processing unit, 8 ... DAT mechanical drive processing unit, 9A to 9E ... Operation key, 9F ... Stop key, 10 ... OR circuit.

Claims (1)

(57) [Scope of utility model registration request] 1. A recording / reproducing apparatus in which power supply is controlled in accordance with a stop control operation input, and power supply means for supplying power to the recording / reproducing apparatus, and switch means for controlling on / off of the power supply means. Timer means for outputting a detection signal detecting that a predetermined time has elapsed from the timing at which the recording / reproducing apparatus is stop-controlled by an operation input of stop control, and the power supply means is turned off in response to the stop control. At this time, a storage means for at least saving and holding the operation state data of the recording / reproducing apparatus before the stop control, and a new means other than the stop control until the predetermined time has been detected by the timer means. The switch means for turning off the power supply means after the lapse of the predetermined time in response to the detection signal when no operation input is made. When a new operation input other than the stop control is made by the time the control is performed and the timer means detects that the predetermined time has elapsed, the power supply means is reset by resetting the timer means. Is controlled so as not to turn off, and a control means for reducing the number of times data is saved to the storage means according to the control.