US 5,351,096 AGranted

Remote control circuit for video cassette tape recorder

AssigneeGoldstar Co., Ltd.

InventorChung S. Park

Life of this patent

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Abstract

A remote control circuit for a system wherein several terminal units are operatively connected to a single main unit, enabling the main unit to be controlled by the terminal units. The remote control circuit includes a remote control receiving unit equipped in a TV system and adapted to receive and process a remote control signal from a remote control transmitter, and a TV control microprocessor adapted to analyze the remote control receiving unit so as to output a VCR remote control signal and TV control signal based on code information of the remote control signal. The VCR control signal is transmitted to a VCR system by a VCR control signal transmitter, via a radio frequency cable. The VCR control signal includes a control signal converter and a pulse width modulator. In the VCR system, original VCR control signal is recovered, by a band-pass filter and a rectifier. The VCR control signal is converted into code information, by an A/D converter, which code information is applied to a VCR control microprocessor, so as to control the VCR system.

Claims2

Dependent claims

A remote control circuit comprising:

a TV system including,
remote control receiving means for receiving and processing a remote control signal from a remote control transmitter,
TV control microprocessor means for analyzing the remote control signal from the remote control receiving means so as to control said TV system and separate a VCR remote control signal from the remote control signal,
VCR remote control signal transmitting means for modulating the pulse width of the VCR remote control signal separated by said TV control microprocessor means and transmitting the modulated VCR remote control signal to a VCR system, via a radio frequency cable;
a VCR system including,
remote control signal processing means for receiving and processing the VCR remote control signal from said TV control microprocessor means, and
VCR control microprocessor means for controlling the VCR system based on the VCR remote control signal from said remote control signal processing means and a control signal input from a remote control signal receiver from the VCR system,
said remote control signal processing unit including,
a band-pass filter for filtering the VCR remote control signal input from the TV system via the radio frequency cable,
a rectifier for rectifying an output signal from the band-pass filter, and
an A/D converter for converting an output signal from the rectifier into a digital signal.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/857,829Filed 26 Mar 1992
Priority: KR 4811/199127 Mar 1991
Granted: 27 Sep 1994
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H03J 1/0025
Using a central processing unit, e.g. a microprocessor: in a remote control unit
H04B 1/202
For coupling gramophone pick-up, recorder output, or microphone to receiver: by remote control
H04N 5/765
Television signal recording: interface circuits between an apparatus for recording and another apparatus
H04N 5/775
Interface circuits between an apparatus for recording and another apparatus: between a recording apparatus and a television receiver

Family

No related US applications are recorded in the indexed filing history.

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