JPS6399357U - - Google Patents

Description

[Brief explanation of the drawing]

The drawing is an electrical block diagram showing an embodiment of the present invention. In the figure, 1 is a first switch circuit, 2 is a second switch circuit, 3 is a manual switch, 4 and 4' are communication terminals, 5 is a communication interface circuit, 6 is a third switch circuit, 7 is a communication control circuit, 8 is the first communication circuit, 8' is the second communication circuit, 8'' is the third communication circuit, 9 is the ROM, and 10 is the first communication circuit.
Relay circuit, 10' is a second relay circuit, 10'' is a third relay circuit, 11 is a semiconductor switch, 12 is an alarm reset switch, 13 is a playback display LE
D, 14 indicates an abnormality display LED, and 15 indicates a 1-chip microcomputer.

Claims (1)

[Scope of utility model registration request] At least three laser disc player devices (hereinafter referred to as LD devices) can be connected, and at least three LD devices can be operated independently and repeatedly, two can be operated alternately, and at least three more can be connected. An automatic switching operation device that selects sequential switching operation and operation mode and performs continuous operation, has a 1-chip microcomputer that centrally controls the device, and has an address (
A circuit for storing operation control processing of the corresponding device and a communication processing program between the device, the LD device, and the external timer device is connected to a ROM connected to the address (address) and the data input/output terminal, and the address and data input/output terminal of the microcomputer. and a communication control circuit that performs serial data communication with the LD device, and the data transmission/reception terminal and the microcomputer output terminal, supports at least three LD devices, and controls the sequential connection of communication lines. a first switch input circuit which is connected to the circuit and the input terminal of the microcomputer, and which permits operation of the at least three LD devices and designates an operation mode such as independent operation, alternate switching operation, or sequential switching operation; The output terminal of the microcomputer is connected to a second switch input circuit which is effective during alternate switching operation and sequential switching operation and specifies the same title, and the reproduction LD
The relay circuit that outputs the video and audio signals of the device performs polling data communication with the relay circuit that corresponds to the above-mentioned at least three LD devices, and the attached external timer device, and sends L to the device address signal.
A device built in the microcomputer that receives operation information including operation start and end time signals of the D device and transmits operation information that includes LD device regeneration and abnormal operation and operation mode signals added to the device address signal. An automatic switching operation device for a laser disc player device, comprising a communication interface circuit connected to a communication control circuit, and a third switch input circuit that is input to the macrochronograph computer and responds to a device address signal of operation information.