JPH0110651Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an interface circuit for a sequential access type auxiliary storage device such as an audio cassette tape recorder in a computer device.

[Purpose of invention]

An object of the present invention is to provide a program for a computer device when one sequential access type auxiliary storage device is used as a peripheral device of a computer device and when two sequential access type auxiliary storage devices are used. An object of the present invention is to provide an interface circuit for a sequential access type auxiliary storage device in a computer device that can be realized without requiring any modification.

[Summary of the idea]

The present invention provides first and second switching circuits for individually remotely controlling the driving and stopping of two sequential access type auxiliary storage devices based on the output of a computer device, and a switching circuit for remotely controlling the auxiliary storage devices. a first remote control jack having a switch element that opens when plugged in and connected directly to the first switching circuit and to the second switching circuit via the switch element; , and the first
The present invention is characterized in that a second remote control jack is provided which is connected to the switching circuit via the switching element and directly connected to the second switching circuit. In other words, as a result of this configuration, when the respective remote control plugs of the two sequential access type auxiliary storage devices are inserted into the first and second remote control jacks, the first switching between the circuit and the first remote control jack;
The switching circuit and the second remote control jack are connected independently, and the remote control plug of one sequential access type auxiliary storage device is connected to the second remote control jack. In this state, the first and second switching circuits and the second remote control jack are connected to each other.

[Example of idea]

Hereinafter, a first embodiment of the present invention will be described with reference to FIG.

1 is a personal computer which is a computer device; 2 is an interface circuit for connecting the personal computer 1 and an audio cassette tape recorder (hereinafter simply referred to as tape recorder) which is a sequential access type auxiliary storage device; This will be discussed below. That is, 3 is an input jack, and 4 is an output jack, into which a plug led out from the earphone terminal of the tape recorder and a plug led out from the microphone terminal are respectively inserted. Further, 5 is a load interface for shaping the input signal from the input jack 3 and inputting it to the personal computer 1, and 6 is a save interface for giving the output signal from the personal computer 1 to the output jack 4. It is. 7 and 8 are remote control jacks;
A plug led out from the remote control terminal of the tape recorder is inserted into these. The remote control terminals mentioned above have a well-known configuration for controlling the drive and stop of the tape recorder, and each remote control jack 7 and 8 has a terminal 7 connected to the plug when the plug is inserted.
a, 7b and 8a, 8b are connected, respectively, and the terminals 7c and 8c are opened according to the movement of the movable tongues 7d and 8d, which are switch elements, respectively, and when the plug is unplugged, the movable tongues 7d and 8 are connected.
between terminals 7b and 7c and 8 according to the return movement of d.
The configuration is such that b and 8c are connected to each other. 9 is a transistor that is turned on by the personal computer 1 when the load interface 5 is activated; 10 is a relay having an excitation coil 10a that is energized from the plug power terminal 11 when the transistor 9 is turned on; Terminals a and b of normally open relay switch 10b are connected to terminals 7a and 7b of remote control jack 7, respectively. 12 is a transistor that is turned on by the personal computer 1 when the save interface 6 is activated, and 13 is a relay that has an excitation coil 13a that is energized from the positive power terminal 11 when the transistor 12 is turned on, and its switching circuit is Terminals a and b of normally open relay switch 13b are connected to terminals 8a and 8b of remote control jack 8, respectively. Terminals 7a and 8a of remote control jacks 7 and 8 are connected to each other, and terminals 7c and 8b are also connected to each other. As a result, the remote control jack 7 is directly connected to the relay switch 10b and connected to the relay switch 13b via the switch element 7d. Further, the remote control jack 8 is connected to the relay switch 10b via the switch element 7d, and is also directly connected to the relay switch 13b. Therefore, when the plug is inserted only into the remote control jack 8, the relay switches 10b and 13b are connected in parallel to the plug.

Next, the operation of this embodiment having the above configuration will be explained. Now, two tape recorders are used, data stored in one tape recorder (hereinafter referred to as the loading tape recorder) is read by the personal computer 1, and data stored in the other tape recorder (hereinafter referred to as the loading tape recorder) is read. When storing new data in a road tape recorder (referred to as a road tape recorder), insert the plug led out from the earphone terminal of the load tape recorder into the input jack 3, and also insert the plug led out from the load tape recorder's remote control terminal. into the remote control jack 7, then insert the plug led out from the microphone terminal of the save tape recorder into the output jack 4, and insert the plug led out from the remote control terminal of the save tape recorder into the remote control jack 8. Insert it into the In this state, the terminal 7c of the remote control jack 7 is opened, so that the remote control terminals of the load tape recorder and the save tape recorder are individually controlled by the relay switches 10b and 13b, respectively. Become. Therefore, when the transistor 9 is turned on by the personal computer 1 and the excitation coil 10a of the relay 10 is energized, the relay switch 10b is accordingly turned on.
The loading tape recorder is driven in response to turning on, and the stored data is transferred to the loading interface 5.
The data is read into the personal computer 1 via the . Further, when the transistor 12 is turned on by the personal computer 1 and the excitation coil 13a of the relay 13 is energized, the save tape recorder is driven in response to the turning on of the relay switch 13b, and the personal computer 1 data is written to the save tape recorder via the save interface 6. Then, when the transistors 9 and 12 are turned off, the load tape recorder and the save tape recorder are stopped in accordance with the turned off. As described above, the driving and stopping of the two tape recorders are individually controlled remotely, and data can be written to the save tape recorder while reading data from the load tape recorder.

On the other hand, when only one tape recorder is used as an auxiliary storage device, each plug led out from the earphone terminal and microphone terminal of the tape recorder is inserted into the input jack 3 and the output jack 4, respectively, and the tape The plug led out from the remote control terminal of the recorder is inserted into the remote control jack 8. Then, when the plug is inserted only into the remote control jack 8 like this, the terminal 7 of the remote control jack 7
Since b and 7c remain connected,
Relay switches 10b and 13b are connected in parallel to the plug (in other words, the tape recorder). Therefore, when the load interface 5 is activated in connection with reading data from the tape recorder and the transistor 9 is turned on, and when the save interface 6 is activated in connection with writing data to the tape recorder, the transistor 9 is turned on. 12 is turned on, the tape recorder is driven. Therefore, data reading and writing operations using only one tape recorder can be remotely controlled in the same way as in the past.

According to the interface circuit 2 having the above-described configuration, it is possible to use one tape recorder to read data and write data through the tape recorder in the same manner as before, and it is also possible to use two tape recorders. The functionality of the personal computer 1 can be increased by using each tape recorder exclusively for data reading and data writing, and in this case there is no need to change the program of the personal computer 1, making it extremely convenient for the user. .

If the terminal 7b of the remote control jack 7 and the terminal 8c of the remote control jack 8 are also connected as in the second embodiment of the present invention shown in FIG. When a plug is inserted into either one of 7 and 8, relay switches 10b and 13 are activated for that plug.
b are connected in parallel, so when only one tape recorder is used to read and write data, either remote control jack 7 or 8 can be used; It is possible to suppress the occurrence of mistakes.

[Effect of idea]

According to the present invention, as is clear from the above description, there are cases in which one sequential access type auxiliary storage device is used as a peripheral device of a computer device, and two sequential access type auxiliary storage devices are used as a peripheral device of a computer device. It is possible to increase the functionality of the computer device by using it in different cases, and furthermore, such an effect can be achieved without changing the program of the computer device.

[Brief explanation of the drawing]

FIG. 1 is an electrical circuit diagram showing an embodiment of the present invention;
FIG. 2 is an electrical circuit diagram showing another embodiment of the present invention. In the figure, 1 is a personal computer (computer device), 2 is an interface circuit, 7, 8
is a remote control jack, 7d is a movable tongue piece (switch element), 10 and 13 are relays, 10b and 1
3b is a relay switch (switching circuit).

Claims (1)

[Scope of utility model registration request] a first and a second sequential access type auxiliary storage device for individually remotely controlling driving and stopping of the two sequential access type auxiliary storage devices based on the output of the computer device;
a switching circuit, and a switching element that is opened when the remote control plug of the auxiliary storage device is inserted, the switching circuit being directly connected to the first switching circuit and having the switching element connected to the second switching circuit. a first remote control jack connected to the first switching circuit via the switch element and a second remote control jack connected to the first switching circuit via the switch element and directly connected to the second switching circuit; 1. An interface circuit for a sequential access type auxiliary storage device in a computer device, characterized by comprising: