JPH0366089A - Wrong wiring warning apparatus of multiinput a/v - Google Patents

Abstract

PURPOSE: To simply identify an erroneous wiring state in an external electronic apparatus by displaying an alarm sound and picture using a voice synthesizing part and letter generator at the time of erroneous wiring of external signal. CONSTITUTION: When an external audio (A)/video (V) signal is not matched or applied due to erroneous connection wiring, the state of a video and audio signal outputted from an A/V switching part 1 are detected with a signal detecting part 7 controlled with the output P2 from an A/N control logic 6, and an erroneous wiring signal is outputted and applied to the terminal P1 of an audio switching part 4. The erroneous wiring detecting signal is also applied to the output P1 of a remote control regulating part 8, the output P3 of the regulating part 8 is applied to the terminal P2 of the audio switching part 4 through the voice synthesizing part 9, thereafter the output P3 is applied to a speaker SP through a voice signal processing part 5 and amplifier AMP to generate an alarm sound. Also, a CRT drive 3 is controlled with the output P2 of the regulating part 8 through a letter generator 10, and the letter 'erroneous wiring' is generated on the screen of the CRT.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a multi-input A/V (A: audio, V: video) which is designed to detect incorrect wiring to the multi-input A/V (A: audio, V: video).
The present invention relates to a miswiring warning device.

Prior Art and Problems TV video signals and “V audio signals output from inside the device are processed by a video tape recorder (V audio signal) which is connected to the outside.
A multiplexer that outputs the video signal and audio signal of the TR) and the video signal and audio signal of the externally connected microcomputer! With the gradual demand for Riroku-style televisions, there has been a need for a means by which users can immediately identify the presence or absence of faulty wiring in electronic products, etc. connected from the outside. However, in the past, there was no means to detect the miswiring condition of another multi-input A/V, so when a miswiring condition occurs, there is a drawback that an erroneous signal is output from the cathode ray tube and speaker. However, there is a drawback that it is troublesome to find a miswired state.

Means for Solving the Problems An object of the present invention is to use a voice alarm unit and a character generator to generate an alarm sound and an alarm screen when the wiring of a multi-input A/V is incorrect, thereby preventing errors in external electronic equipment. To provide a miswiring warning device that can immediately identify wiring conditions.

Another object of the present invention is to provide a miswiring warning device that can easily process an alarm sound and an alarm screen display by using the circuit of an existing Arepi receiver having an on-screen function as is.

The feature of the present invention is that it is configured between an A/V control logic element, a CRT drive element, and an audio switching element, and when there is a miswiring, the output video signal and audio signal are detected by the output of the A/V control logic element. Miswiring detection means outputs a wiring detection signal, and the output of the miswiring detection means is connected to a remote control adjustment element, a character generator,
The mis-wiring warning VL includes a mis-wiring sensing means configured to detect a mis-wiring state by turning the CRT drive element and audio switching element through the audio synthesis element.

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

The figure is an implementation circuit diagram of the present invention, and shows the A/V switching sound 1.
The internal video signal and audio signal of the input terminals 1+-14 and the external video signal and audio signal applied to the input terminals 1+-14 are connected to the external input selection A/V control logic (A/V con
trol togic) 5, and the video signal processing unit 2. CRT drive 3. Audio switching section 4, audio signal processing section 5.1'!
In the circuit that drives the cathode ray tube CRT and the speaker SP through the amplifier AMP, the A/V control logic 6
The signal 8 detection section 7, which is composed of the CRT drive 3 and the audio switching section 4, is the A/V control theory 3! ! ! Controlled by the output Pz of 6, the A/V switching switching sound 1 power P+
, Pz, which is configured to detect the miswiring state between the video signal and the audio signal, and output a miswiring detection signal, and then the respective remote control adjustment section 8, audio synthesis section 9 and Tj
The CRT drive 3 and audio switching unit 4 are set to υ1111 through the character generator 10 so that a warning screen and sound are output to the cathode ray tube CRT and speaker SP.
It was something.

Here, external video and audio signals are sent to multiple VTRs.
The internal video signal is a TV double signal. A/V
The switching unit (1) is an in-shell analog switching integrated device and uses a TC4053B P device. Furthermore, in the drawings, logic refers to H level and L level state signals.

The effects of the present invention configured as described above will be explained as follows.

In the overall configuration diagram of the present invention, A/V control 6
The I)IXI signal generated from the output P+ side of the input terminal 1+- causes the A/V switching sound 11ltll.
After the internal video and audio signals and the external video and audio signals applied from f< are selected, each video signal processing unit 2. CRT drive 3. Audio switching section 4
．． By driving the cathode ray tube CRT and the speaker SP through the audio signal processing section 5° amplifier AMP, the user can reproduce the desired screen and sound. If the connection wiring is done in time and the external 116A/V signal does not match or is not applied, the signal detection unit 7, which is turned υ1 by the output Pz of the A/V control logic 6, switches the A/V. ! ! The state of the video signal and audio signal outputted from 11 is detected and a miswiring detection signal is output, which is applied to the terminal Pl of the audio switching section 4 and also applied to the terminal Pl of the remote control adjustment section 8. After the output P3 of the adjustment section 8 passes through the audio signal processing section 9 and is applied to the terminal Pz of the audio switching section 4, it is applied to the audio signal processing section 5 and the amplifier A.
By applying the signal to the speaker SP through the MP, an alarm sound for incorrect wiring can be generated. Here, the signal detection unit 7 performs a detection operation after being delayed for a certain period of time, so that the audio and video signals can be detected after being sufficiently switched.

Then, the output P2 of the remote control adjustment section 8 is output to the character generator 10.
CRT drive 3 through υ+w and cathode ray tube CR
By driving T, a message indicating incorrect wiring appears on the on-screen display, allowing the user to detect the incorrect wiring condition. ! ! It can also be used in a circuit to check for excessive radiation emission from the circuit and abnormality in lightning #i voltage.

Effects of the Invention As described above, the present invention is configured so that when an external signal is incorrectly wired, it is detected through the speaker and the cathode ray tube. An A/V miswiring warning device can be provided.

[Brief explanation of drawings]

The figure is a circuit diagram for implementing the present invention. 1... A/Vt7F conversion unit, 2... Video signal processing unit,
3...CRr drive, 4...Audio switching section,
5... Audio signal processing section, 6... A/V control logic, 7... Signal detection section, 8... Remote control adjustment section.

Claims (1)

[Claims] (1) The control signal output from the A/V control logic element controls the A/V switching element, and the video and audio signals applied from inside and outside pass through each video signal processing element and CRT drive element. In a TV/VTR system comprising a screen and audio reproduction means that drive a cathode ray tube and drive a speaker through an audio switching element, an audio signal processing element, and an amplifier element, the A/V control includes: A when the wiring is incorrect between the logic element, CRT drive element, and audio switching element.
a miswiring detection means configured to output a miswiring detection signal by detecting an output video signal and an audio signal using the output of the /V control logic element; a multi-input A/V, comprising: a miswiring detection means configured to control the CRT drive element and audio switching element through the audio synthesizer and the audio synthesis element to detect a miswiring state; Miswiring warning device.