JPS5916326B2 - switch operation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a switch operating device used to switch the recording characteristics of a tape recorder depending on the type of magnetic tape.

Magnetic tapes used in tape recorders have different hysteresis characteristics depending on the purpose of use.

These eight tape recorders are provided with means for switching the recording characteristics, and the recording circuit is switched depending on the type of tape. For example, magnetic tapes on the general market include normal tape, hi-fi tape, ferrichrome tape, and chrome tape.

These magnetic tapes have different magnetic powder densities and materials, and also have different hysteresis characteristics. Therefore, each of the tapes and the like requires different recording characteristics when recording. For this reason, tape recorders are provided with recording bias circuits and equalizer circuits for setting recording characteristics, and these circuits are switched depending on the type of tape. However, when five switches are used as the switching means for the circuit, it is required to be easy to operate and to prevent erroneous operation.

The present invention was made in view of the above circumstances, and is applicable to circuits where both are used at the same time, such as bias circuits and equalizer circuits in tape recorders, where either one of them is used at the same time, or where only one of them is used. It is an object of the present invention to provide a switch operating device which can switch a plurality of circuits with a single touch part to control the switch, and which provides ease of operation and safety.

25, embodiments of the present invention will be described in detail with reference to the drawings.

First, the present invention provides a method for obtaining predetermined recording characteristics in a tape recorder when replacing tapes with different characteristics.
The recording characteristics are configured to be switched with a single touch, and the human body 30 (finger, etc.) can drive two switches at the same time. In Figure 1a,
11 is an insulating substrate made of glass material, for example.

A plurality of touch electrodes 12 and 1335 made of a conductive film are arranged side by side on one surface of this insulating substrate 11. Of course, both electrodes are insulated. Furthermore, a ground electrode 14 is provided along these electrodes. The touch electrode 12
, 13 are connected to the input end of a control circuit 15, which is also provided on the surface of the insulating substrate 11, through a linear conductive film. This control circuit 15 is composed of, for example, a large-scale integrated circuit LSL, and its output terminal penetrates through the insulating substrate 11 and is led out to the other surface side. Thus, the touch electrodes 12, 13
First to third touch portions 16, 17, and 18 are set so as to straddle the earth electrode 14. These first to third touch sections 16, 17, and 18 correspond to first to third touch windows 21, 22, and 23 of the cabinet 19 in the operating section, as shown in FIG. Therefore,
If the output end of the control circuit 15 is connected as a control switch to the bias circuit 24 and equalizer circuit 25 as shown in FIG. can be done.

On the other hand, when the third touch section 18 is touched with a finger, only the equalizer circuit 25 can be made conductive. Furthermore, when the second touch section 17 is touched with a finger, both the bias circuit and the equalizer circuit can be made conductive. The switch operating device is provided in a recording characteristic setting circuit of a tape recorder as shown in FIG. 3, and controls switch sections 26 and 27.

That is, in the recording characteristic setting circuit, 28 is a recording magnetic head, and the output terminals of the equalizer circuit 25 and the bias circuit 24 are connected to the input terminal of the recording magnetic head 28 via switch sections 26 and 27, respectively.

The switch section 26 is configured to directly introduce the output of the recording amplifier 29 into the magnetic head when the output of the equalizer circuit 25 is not introduced into the magnetic head 28. The output terminal of the amplifier 29 is also connected to the input terminal of the equalizer circuit 25, and the output terminal of the amplifier 29 is also connected to the input terminal of the equalizer circuit 25.
However, when switching to the equalizer circuit side, the output of the amplifier 29 is introduced to the recording magnetic head 28 via the equalizer circuit 25. On the other hand, the switch section 27 is configured to introduce the output of the oscillator 30 into the magnetic head via the adjustment resistor 31 when the output of the bias circuit 24 is not introduced into the magnetic head 28. The output terminal of the oscillator 30 is also connected to the input terminal of the bias circuit 24, and when the switch section 27 is switched to this bias circuit side, the output of the oscillator 30 is connected to the input terminal of the bias circuit 24. It is introduced into the recording magnetic head 28. The above-mentioned recording characteristic setting circuit is configured to perform optimal recording for normal tape when the outputs of the equalizer circuit 25 and bias circuit 24 are cut off, and when the switch sections 26 and 27 are in the state shown in the figure. It is set to be a characteristic.

That is, as shown in the table of FIG. 4, in the case of normal tape, settings are made so that bias circuits, equalizer circuits, etc. are not required. It is known that adding an equalizer circuit to the recording characteristics for normal tape will result in recording characteristics suitable for high-fidelity tape, and adding a bias circuit will result in recording characteristics suitable for Ferrichrome tape. ing. It is also known that adding both a bias circuit and an equalizer circuit can provide recording characteristics suitable for chrome tape. The switch operation device according to the present invention can provide extremely effective effects to the recording characteristic setting circuit as described above.

That is, in the explanatory diagram shown in FIG. 2, the first touch part 16 is used as a recording characteristic setting switch for Ferri chrome tape, the second touch part 17 is used as a recording characteristic setting switch for chrome tape, and The third touch section 18 can be operated as a high-fidelity tape recording characteristic setting switch. In particular, by providing the second touch part 17, it is possible to operate multiple switches at the same time with one touch, and in this case, the first and third touch parts 16
, 18 need not be touched.

Therefore, recording characteristics can be reliably set with a single touch, and operability is improved. According to the apparatus of the present invention in the above embodiment, a touch window is formed on the cabinet, and as shown in FIG.
The touch sections 16 to 18 may be set on the same surface.

In this case, in order to identify the first to third touch parts, an insulating frame 32 as shown in FIG. 2B may be attached to the upper surface of the touch parts. In this way, there is no need to make thin cuts in the cabinet, and it is possible to create a richly colored touch part that takes advantage of the transparency of the frame. Further, each touch portion may have a different color, or may have a different pattern. Furthermore, when a frame is not provided, a color may be applied to distinguish the touch portions. Furthermore, the apparatus of the present invention may be provided with means for displaying that the recording characteristics of the tape recorder are suitable for normal tape.

That is, as shown in FIG. 6, a display section 33 for displaying normal tape characteristics is provided on the same surface as the frame 32. This display section may be made of a light-transmitting material to add color and write characters. A light emitting element 34 is embedded in the lower insulating substrate 11, and the light emitting element is set to light up when the bias circuit 24 and equalizer circuit 25 described above are not switched. Improves operability and makes it easier to handle. Furthermore, it is also possible to use a plurality of light emitting elements corresponding to each touch portion so that different display locations are lit for different tapes. As stated above, the present invention can be applied to, for example, a tape recorder that enables one-button recording operation, by reducing the number of operations of the tape recorder. It is possible to provide a switch operating device that can perform switching with a touch part at one location, improves operability, and provides easy identification of the touch part.

[Brief explanation of the drawing]

FIG. 1a is a perspective view showing essential parts of an embodiment of the switch operating device of the present invention, FIG. 1b is a sectional view showing an embodiment of the device of the present invention, and FIG. 2 is a circuit system of the device of the present invention. FIG. 3 is a recording characteristic setting circuit diagram showing an example of the circuit used in the device of the present invention, FIG. 4 is an explanatory diagram showing an example of how the circuit in FIG. 3 is used, and FIG. A and b are a sectional view and a plan view of parts showing another embodiment of the device of the present invention, and FIG. 6 is a plan view of parts according to another embodiment. 11...Insulated substrate, 12, 13...Touch electrode, 14...Earth electrode, 15...
... Control circuit, 16, 17, 18... Touch section, 19... Cabinet, 21, 22, 23...
...Touch window, 24...Bias circuit,
25... Equalizer circuit, 26, 27...
...Switch part, 32...Frame body, 33...
...Display section.

Claims (1)

[Claims] 1. A plurality of touch electrodes are arranged side by side on the same surface of an insulating substrate, and bias circuits for different purposes, A switch operation device characterized in that touch electrodes for switching between first and second functional circuits such as an equalizer circuit are arranged close together, and a plurality of switch functions corresponding to the touch electrodes are operated at one time. . 2. The switch operation device according to item 1 above, wherein the upper surface of the plurality of touch electrodes is provided with a color or pattern that identifies the touch portion. 3. The switch operating device according to item 1 above, wherein the touch portion is provided with an insulating frame.