Black and white monitoring system for use in a remote controller

• US 5,003,396 A
• Filed: 07/31/1989
• Issued: 03/26/1991
• Est. Priority Date: 07/30/1988
• Status: Expired due to Term

• Current Assignee: Goldstar Jewellery LLC
• Original Assignee: Goldstar Jewellery LLC
• Inventors: Kang, Cheol H.
• Primary Examiner(s): Groody, James J.
• Assistant Examiner(s): Juo, James
• Application Number:
  US07/386,709
• Time in Patent Office: 603 Days
• Field of Search: 358/194.1, 358/192.1, 455/151, 455/352, 455/353, 455/603, 455/618
• US Class Current: 348/734
• CPC Class Codes: H03J 1/0025 in a remote control unit remote control tuning in general H03J9/00
• CPC Class Codes: H03J 2200/24 Remote control device with display showing program content
• CPC Class Codes: H04N 5/44 Receiver circuitry for the reception of television signals according to analogue transmission standards H04N5/14 takes precedence

Abstract

A black and white monitoring system apparatus for use in a remote controller having a light receiver, an analog multiplexer, a signal level controller, an analog switching member, A/D converters, latches, parallel/serial converters, a control signal generator, a first oscillator, an OR gate, and a light transmitter disposed in the television set. The remote controller has a remote control signal generator, a control signal light transmitter, a remote control signal separator, a vertical driving circuit, a horizontal driving circuit, a liquid crystal monitor, a control signal generator, and second oscillator. In this system, a broadcast television picture is reproduced on a liquid crystal monitor in black and white so that the television picture can be seen on the remote controller by freely selecting a channel.

Claims

1. A black and white monitoring system for use with a remote controller which comprises:

receiving means for receiving a broadcast television signal;

said receiving means including,

a control signal receiver for receiving a remote control signal from a remote controller,

an analog multiplexer for outputting one of a plurality of luminance signals selected by a selecting signal generated by said control signal receiver,

signal level control means for controlling an output signal level of said analog multiplexer,

analog switching means for sampling an output signal of said signal level control means during a predetermined period and outputting alternatively from two output terminals,

A/D converters for converting an output signal of said analog switching means to a four bit parallel digital signal,

first latch means for latching said four bit digital signal from said A/D converters,

parallel/serial converters for converting the four bit parallel digital signal of said first latch means to a four bit serial signal,

a first control signal generator for receiving a combined synchronizing signal and generating various control signals including a starting pulse, horizontal and vertical synchronizing signals, and an oscillation control signal so as to control driving of said analog switching means, A/D converters, first latch means, and parallel/serial converters,

a first oscillator for generating an oscillation signal from said oscillating control signal of said control signal generator and applying said oscillation signal to said control signal generator,

an OR gate for summing logically output signals from said parallel/serial converters, said starting pulse from said control signal generator, and said vertical and horizontal synchronizing signals, and

a light transmitter for transmitting an output signal from said OR gate with an infrared ray light; and

transmitting means for transmitting, built in said remote controller, a remote control signal;

said transmitting means including,

a remote control signal generator for generating said remote control signal,

a control signal light transmitter for transmitting said remote control signal from said remote control signal generator with the infrared ray light,

a light receiver for receiving said output signal of said OR gate from said light transmitter,

a remote control signal separator for separating alternatively said four bit serial digital signal from the output signal of said light receiver,

serial/parallel converters for converting the output signal of said remote control signal separator to a four bit parallel signal,

second latch means for latching the output signal of said serial/parallel converters,

a multiplexer for outputting one output signal selected from a plurality of output signals from said second latch means,

vertical driving means for outputting a vertical driving signal according to the output signal of said multiplexer,

a liquid crystal monitor for displaying the picture according to an output signal from said vertical driving means and an output signal from a horizontal driving circuit,

a second control signal generator for separating the said horizontal and vertical synchronizing signals from the output signal of said light receiver and generating various control signals and a oscillation control signal so as to control said remote control signal separator,

serial/parallel converters, second latch means, multiplexer, vertical driving means and horizontal driving circuit, and

a second oscillator for generating an oscillation signal from the oscillation control signal of said control signal generator and applying to said control signal generator, thereby enabling the television picture to be seen on said remote controller by freely selecting a channel.