Remote control transmitter/receiver system

• US 5,528,230 A
• Filed: 01/06/1993
• Issued: 06/18/1996
• Est. Priority Date: 01/06/1992
• Status: Expired due to Fees

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Ji-Hyun
• Primary Examiner(s): Bowler, Alyssa H.
• Assistant Examiner(s): Rinehart, Mark H.
• Application Number:
  US08/001,737
• Time in Patent Office: 1,259 Days
• Field of Search: 340/825.31, 340/825.4, 395/80, 395/82, 380/43, 380/24, 380/23, 380/21, 380/17, 341/176, 379/95, 455/31.1, 455/32.1, 455/33.1, 455/38.1, 455/38.2, 455/68
• US Class Current: 340/5.3
• CPC Class Codes: G08C 19/28 using pulse code

Abstract

A remote control transmitter/receiver system in which a transmitter transmits a signal incorporating a secret code and a command function. The receiver receives the signal from the transmitter, discriminates the secret code and command function and performs a user'"'"'s command only if the secret code in the received signal coincides with a secret code set in the receiver. This remote control transmitter/receiver system includes a transmitter for converting a secret code and function signal into an encoded pulse signal and modulating the pulse signal to transmit the modulated signal. The remote control receiver receives the signal transmitted from the transmitter and demodulates the signal to output a function signal only when the secret code in the demodulated signal coincides with a secret code stored therein to thereby perform the user'"'"'s command.

Claims

1. A remote control transmitter system comprising:

first secret code input means for freely inputting secret codes;

function key input means for inputting command functions;

an encoder for encoding a secret code and a command function into a signal having a group of pulses with a predetermined pattern based on the secret code and the command function entered from the first secret code input means and function key input means, respectively; and

signal modulating means for modulating the group of pulses encoded by the encoder into a high frequency carrier wave signal and transmitting the modulated group of pulses, for use in a robot system, wherein said function key input means includes;

a first function push-switch which controls a disarming function of said robot system such that when said first function push-switch is pressed once, a security sensing operation of the robot system is stopped, and when said first function push-switch is pressed twice, the security sensing operation of the robot system is started,

a second function push-switch which commands the robot system to generate a loud alarm signal and to generate a signal for auto-dialing a central monitor unit, and

a third function push-switch which commands said robot system to produce a beeping signal to indicate a position of the robot system.

2. A remote control transmitter system according to claim 1, wherein said first secret code input means includes a plurality of user-operable selection switches having one end connected to input terminals of the encoder and a second end selectively connected to one of first and second terminals, said first terminal being connected to a voltage source and said second terminal being connected to ground, said plurality of selection switches permitting input of the secret code.

3. A remote control transmitter system according to claim 1, wherein said function key input means includes first, second and third function push-switches, each of which is connected at one end to a corresponding input terminal of the encoder and is connected at another end to ground.

4. A remote control transmitter system according to claim 1, further comprising:

a pulse generator for generating a basic frequency pulse,

wherein said pulse generator includes resistors connected in parallel with a capacitor.

5. A remote control transmitter system according to claim 1, wherein said signal modulating means further comprises:

a slidable power switch for turning said transmitter system ON and OFF,

a bias resistor for receiving the encoded group of pulses when said slidable power switch is turned ON,

a transistor, acting as an output amplifier, for amplifying pulses input to said signal modulating means, and

means for modulating the amplified signal together with a d.c. voltage into a high frequency carrier wave, said d.c. voltage being supplied from a d.c. voltage source through a parallel circuit including an inductor and a variable capacitor.

6. A remote control transmitter system according to claim 4, wherein said predetermined pattern used by said encoder to produce said group of pulses is based on said basic frequency pulse generated by said pulse generator.

7. A remote control transmitter/receiver system for use with a robot system, comprising a remote control transmitter for converting a secret code and a function signal into an encoded pulse signal and modulating an encoded pulse signal to transmit a modulated encoded pulse signal and a remote control receiver for receiving and demodulating the modulated encoded pulse signal to output a function signal only when the secret code in the demodulated pulse signal coincides with a stored secret code in the remote control receiver, said transmitter comprising:

first secret code input means for freely inputting secret codes;

function key input means for inputting command functions;

a pulse generator for generating a basic frequency pulse;

an encoder for encoding a secret code and a command function into a pulse signal group having a predetermined pattern based on a pulse signal of the pulse generator when the secret code and the command function are entered from the first secret code input means and function key input means; and

signal modulating means for modulating the pulse signal group encoded by the encoder into a high frequency carrier wave signal and for transmitting the modulated pulse signal group; and

,

said remote control receiver system comprising;

second secret code input means for freely inputting secret codes;

oscillating means for generating an oscillating clock pulse having a predetermined frequency;

signal demodulating means for receiving and demodulating the transmitted modulated pulse signal group into a demodulated pulse signal group;

an inverter for inverting the demodulated pulse signal group including the secret code and the command function outputted from the signal demodulating means to produce an inverted signal group; and

,

a microcomputer responsive to said inverted signal group outputting function signals for moving the robot system only if the secret code in the demodulated pulse signal group from the signal demodulating means coincides with a secret code set by the second secret code input means, wherein said function key input means comprises;

a first function push-switch which controls disarming function of the robot system, when said first function push-switch is pressed once a security sensing operation of the robot system is stopped, and when said first function push-switch is pressed twice, the security sensing operation of the robot system is started,

a second function push-switch which commands to robot system to generate a loud alarm signal and to generate a signal for auto-dialing a central monitor unit, and

a third function push-switch which produces a beep signal to indicate a position of the robot system.

8. A remote control transmitter/receiver system according to claim 7, wherein said first secret code input means includes a plurality of user-operable selection switches, first ends of which are connected to input terminals of the encoder and second ends of which are selectively connected to one of a voltage source and a ground, said selection input switches inputting the secret code.

9. A remote control transmitter/receiver system according to claim 7, wherein said function key input means includes first, second and third function push-switches, each of which is connected at one end to input terminals of the encoder and at an opposite end to ground.

10. A remote control transmitter/receiver system according to claim 7, wherein said signal modulating means further comprises:

a slidable power switch,

a bias resistor for receiving the encoded group of pulses when said slidable power switch is turned ON,

a transistor, acting as an output amplifier, for amplifying pulses input to said signal modulating means, and

means for modulating the amplified signal together with a d.c. voltage into a high frequency carrier wave, said d.c. voltage being supplied from a voltage source through a parallel circuit including an inductor and a variable capacitor.

11. A remote control transmitter/receiver system according to claim 7, further comprising a synchronous receiving circuit including an inductor and a capacitor connected in parallel.

12. A remote control transmitter/receiver system according to claim 7, wherein said inverter includes a transistor and bias resistors connected to a base of the transistor.

13. A remote control transmitter system for use in a robot system, comprising:

first secret code input means for inputting secret codes;

function key input means for inputting command functions;

an encoder for encoding a secret code and a command function into a signal having a group of pulses with a predetermined pattern based on the secret code and the command function entered from the first secret code input means and function key input means; and

signal modulating means for modulating the group of pulses encoded by the encoder into a high frequency carrier wave signal and transmitting the modulated group of pulses,

wherein said function key input means includes first, second and third function push-switches, each of which is connected at one end to a corresponding input terminal of the encoder and is connected at another end to ground, and

wherein said function key input means further includes;

a first function push-switch which controls a disarming function of said robot system such that when said first function push-switch is pressed once, a security sensing operation of the robot system is stopped, when said first function push-switch is pressed twice, the security sensing operation of the robot system is started,

a second function push-switch which commands the robot system to generate a loud alarm signal and to generate a signal for auto-dialing a central monitor unit, and

a third function push-switch which commands said robot system to produce a beeping signal to indicate a position of the robot system.