JPH0559985U - Signal output system - Google Patents

Abstract

(57) [Abstract] [Purpose] The output signals from a plurality of signal source output devices 1, 2 and 3 are supplied to the source input device 4 via one signal line 5 to reduce the assembly wiring man-hours and the cost. It is to do down. [Configuration] Output switching devices 1a, 2a, 3a provided in a plurality of signal source output devices 1, 2, 3 and switching operation of these output switching devices 1a, 2a, 3a are controlled by a control signal from the source input device 4. And a control means for controlling the source output device.
1, 2, 3 and the source input device 4 are connected by one signal line 5.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a signal output system for outputting an output signal from a signal source output device, and more particularly to a signal output system suitable for simplifying control and wiring between a signal source output device and a source input device.

[0002]

[Prior art]

 Conventionally, as a signal output system of, for example, an audio signal, many of the block diagrams shown in FIG. 3 have been provided. In the figure, 10 is one A source output device among a plurality of signal source output devices, 11 is also a B source output device, and 12 is also an N source output device. For example, the A source output device is AM. / FM tuner, B source cassette tape recorder, CD player, etc. 13 is a source input device, for example, a main amplifier that amplifies an audio source signal, and this source input device 13 has an input selector 13a inside, and the input signal switched by this input selector 13a. Is processed by the source input device 13 and output as audio.

Reference numeral 14 is an A signal line for supplying an output signal from the A source output device 10, 15 is also a B signal line, 16 is also an N signal line, and 17 is a plurality of A signals from the source input device 13. This is a control line for controlling the B to N source output devices 10, 11 and 12.

The signal output system configured as described above operates the mode operator (not shown) of the source input device 13 to output the output signals from the plurality of A, B to N source output devices 10, 11, 12. Audio can be output with selective control.

When the control signal from the source input device 13 is taken out via the control line 17, for example, when the output signal from the A source output device 10 is taken out, the output of the A source output device 10 is set to the ON state, The output signal of the A source output device 10 is supplied to the source input device 13 via the A signal line 14, and the outputs of the other plurality of B to N source output devices 11, 12 are cut off.

Further, the input switch 13a inside the source input device 13 is connected and controlled to the terminal of the A source output device 10 and can take in the output signal from the A source output device 10.

In this way, by operating the operating device of the source input device 13, it is possible to select and set the output signals from arbitrary plural A, B to N source output devices 10, 11 and 12 for audio output. It

[0008]

[Problems to be solved by the device]

 However, the above-described conventional signal output system supplies the output signals from the plurality of A, B to N source output devices 10, 11, 12 to the source input device 13, so that the A signal line 14, the B signal line 15, and the B signal line 15, respectively. It is necessary to connect and wire the signal lines as many as the plurality of source output devices of the N signal line 16, which is a drawback that the wiring becomes complicated.

In particular, in the case of in-vehicle electronic devices and the like, the wiring space between the devices is narrow, so that the wiring work is difficult, and when the number of wirings increases, the number of work steps increases significantly and the cost increases. There were drawbacks such as the risk of incorrect wiring distribution.

Further, since the source input device 13 has the input switch 13a for switching the multi-contact, the source input device 13 has a drawback that the cost is increased.

The present invention has been made in view of the above points, and an object thereof is to solve the drawbacks of the conventional example, to provide an output switching device for a plurality of signal source output devices, and It is about to provide a signal output system in which the wiring is composed of one signal line.

[0012]

A signal output system according to the present invention is a signal output system in which output signals of a plurality of signal source output devices are selectively controlled and supplied to a source input device to output a signal. An output selector provided in the equipment and a control means for controlling the switching operation of the output selector by a control signal from the source input equipment are provided, and one source output equipment and one source input equipment are provided. It is configured by connecting with the signal line of.

A controller for controlling the switching operation of the output selector may be provided, and the controller may control the signal source output device and the source input device.

[0014]

[Action]

 According to this invention, an output switcher for switching and controlling the output signals of a plurality of signal source output devices is provided, and the output signal is supplied to the source input device by the ON control of the output switcher. The switching operation of the output switching device of the source output device is switched and controlled by the control signal from the source input device, and the OFF controlled source output device is set to high impedance with respect to the source input device.

That is, a plurality of source output devices are connected to the source input device by a common single signal line, and the output signals of the plurality of source output devices are selectively controlled and the source input is performed by the signal line. Since it can be supplied to devices, the connection between devices can be simplified and the cost can be reduced.

Further, in a device having a controller such as a microcomputer inside the electronic device, the switching operation of the output selector of the source output device can be controlled by this controller, and a selection can be made from a plurality of source output devices. The controlled output signal can be supplied to the source input device for audio output.

As described above, the output switching device is provided in the source output device, the source output device is selected by the source input device or the controller, and at the same time, the output switching device is ON-controlled to supply the output signal to the source input device. As a result, the signal line can be configured with one signal line, and the number of wiring steps can be reduced.

[0018]

【Example】

 An embodiment of the signal output system according to the present invention will be described with reference to FIGS. 1 and 2. 1 is a block diagram showing an embodiment, and FIG. 2 is a block diagram showing a signal output system of an electronic device using a controller. The same parts as those of the conventional example are designated by the same reference numerals and the description thereof will be omitted.

In FIG. 1, 1 is one A source output device among a plurality of signal source output devices, and this A source output device 1 has an output switch 1a inside. Reference numeral 2 is a B source output device similarly having an output switch 2a, and 3 is an N source output device similarly having an output switch 3a. For example, a source output device in an audio system is a tuner or a cassette as in the conventional example. Examples include tape recorders and CD players. 4 is a source input device, for example, the source input device 4 in an audio system is a main amplifier, etc., and the output from a plurality of A, B to N source output devices 1,2,3 is provided to this source input device 4. A signal is input via the signal line 5, and the source output signal supplied to the source input device 4 is subjected to signal processing and output as audio.

On the other hand, 6 controls the operation of a plurality of A, B to N source output devices 1,2,3 from the source input device 4 and simultaneously switches the output of the A, B to N source output devices 1,2,3. This is a control line for switching control of the devices 1a, 2a, 3a.

In the signal output system configured as described above, when a mode operation device (not shown) of the source input device 4 is operated, a control signal for this mode operation is transmitted via the control line 6 to a plurality of A, B ... It is supplied to the N source output devices 1,2,3 and can control the operation of A, B to N source output devices 1,2,3. For example, when the A source output device 1 is controlled to the operating state, the output switching device 1a of the A source output device 1 can be controlled to be ON at the same time so that the output signal from the A source output device 1 can be taken into the source input device 4. It The audio output signal of the A source output device 1 which is selectively controlled is signal-processed by the source input device 4 and output as audio.

On the other hand, the other B to N source output devices 2 and 3 are deactivated, the output selectors 2a and 3a of these B to N source output devices 2 and 3 are controlled to OFF, and the source input device 4 On the other hand, it is possible to operate so as to eliminate unnecessary interference with the output signal (connected with low impedance) from the A source output device 1 by being short-circuited with high impedance.

In this way, the mode operation device of the source input device 4 can be operated to selectively set the output signals from any of the plurality of A, B to N source output devices 1, 2, and 3 for audio output. it can.

In another embodiment shown in FIG. 2, the controller 7 provided inside the equipment controls the A, B to N source output equipments 1,2,3 and the source input equipment 4. The controller 7 is composed of, for example, a microcomputer (not shown) and the like. The microcomputer sets the A, B to N source output devices 1, 2 according to a predetermined program by the mode setting operation from the operation keys 8. , 3 and source input device 4 operation can be controlled.

That is, the controller 7 takes in the selection-controlled audio output signals from the A, B to N source output devices 1, 2, and 3 to the source input device 4 as described above, performs signal processing, and outputs the audio. be able to. Reference numeral 9 is a display connected to the controller 7, and can display the operating state and setting state of the controller 7.

As described above, the audio signals are output from the single signal line 5 by the operation of the A, B to N source output devices 1, 2, 3 controlled by the controller 7 and the switching operation of the output switchers 1a, 2a, 3a. The source output signal can be provided to the source input device 4 as before.

The signal output system for outputting an audio signal has been described above. The signal output system of the present invention has a video signal output system for controlling the signal output of a video signal, other data information, character information, etc. It can also be applied to signal output systems.

[0028]

[Effect of the device]

 As described above, the signal output system according to the present invention selectively controls any desired signal source from a plurality of A, B to N source output devices 1,2,3 to control the source input device with one signal line. Since it can be supplied to the equipment, the wiring between devices can be simplified, the wiring work man-hours can be significantly reduced, and the production cost can be significantly reduced.

In particular, for an on-vehicle electronic device with a small wiring space, for example, a car audio device, wiring with a single signal line is sufficient, so that incorrect distribution can be prevented and the cost of assembling work can be significantly reduced. There is an effect that can be done.

Moreover, it has excellent features such as a simple structure and easy implementation because it can be constructed at low cost.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a signal output system according to the present invention.

FIG. 2 is a block diagram showing another embodiment.

FIG. 3 is a block diagram showing a conventional example.

[Explanation of symbols]

 1 A source output device 1a Output switch provided on A source output device 2 B source output device 3 N source output device 4 source input device 5 signal line 6 control line 7 controller 8 operation key 9 indicator

Claims (2)

[Scope of utility model registration request] 1. A signal output system for selectively controlling output signals of a plurality of signal source output devices and supplying the signal to a source input device to output a signal, wherein an output switch provided in the signal source output device and the output switch. And a control means for controlling the switching operation of the equipment by a control signal from the source input device, and the plurality of source output devices and the source input device are connected by one signal line. And signal output system. 2. The signal output according to claim 1, wherein a controller for controlling a switching operation of the output switch is provided, and the controller controls the signal source output device and the source input device. system.