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Class Information
Number: 340/825.76
Name: Communications: electrical > Selective > Frequency responsive actuation > Plural frequencies > Corresponding to distinct functions
Description: Subject matter wherein each of the different control signal frequencies causes a different operation of the controlled device.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7210656 |
Control, sound, and operating system for model trains |
May. 1, 2007 |
| 7155213 |
Remote control system |
Dec. 26, 2006 |
| 7068169 |
Use of a subcarrier in an organic semiconductor radio frequency identification system |
Jun. 27, 2006 |
| 7005972 |
Portable transmitter for remotely controlling vehicular devices |
Feb. 28, 2006 |
| 6664889 |
Vehicle remote-control system with disarming device for an anti-theft unit thereof |
Dec. 16, 2003 |
| 6567012 |
Remote control device |
May. 20, 2003 |
| 6005490 |
Bidirectional remote control apparatus |
Dec. 21, 1999 |
| 5933074 |
Remote control transmitter broadcasting RF signals conveying plural information components |
Aug. 3, 1999 |
| 5870017 |
Accessory channel expander for vehicle alarm system |
Feb. 9, 1999 |
| 5815077 |
Electronic collar for locating and training animals |
Sep. 29, 1998 |
| 5606314 |
Information processing system connected by radio communication |
Feb. 25, 1997 |
| 5521443 |
Battery residual capacity display and operating device for an electric vehicle |
May. 28, 1996 |
| 5323203 |
Wireless remote control apparatus for camera |
Jun. 21, 1994 |
| 5270821 |
Video display adjustment and on-screen menu system |
Dec. 14, 1993 |
| 5254897 |
Activation circuit for battery-operated security alarm detection system |
Oct. 19, 1993 |
| 5007069 |
Decoding of signals using cophase and differentiating signal detection |
Apr. 9, 1991 |
| 4987406 |
Security system for electrical appliances and other items with electrical circuitry |
Jan. 22, 1991 |
| 4914431 |
Electronic control system for model railroads |
Apr. 3, 1990 |
| 4905279 |
Learning-functionalized remote control receiver |
Feb. 27, 1990 |
| 4889179 |
Two wire adaptive system for interconnecting a four wire thermostat and a four wire, heating/cooling system |
Dec. 26, 1989 |
| 4887078 |
DTMF-Code controlled lock device |
Dec. 12, 1989 |
| 4882681 |
Remote language translating device |
Nov. 21, 1989 |
| 4845483 |
Malfunction communicating device for optical unit of laser printer |
Jul. 4, 1989 |
| 4791409 |
Security system for electrical appliances and other items with electrical circuitry |
Dec. 13, 1988 |
| 4779265 |
Multiple access communication system |
Oct. 18, 1988 |
| 4779266 |
Encoding and decoding for code division multiple access communication systems |
Oct. 18, 1988 |
| 4654881 |
Remote control system having symmetrical tone, send/receive signaling circuits for radio communications |
Mar. 31, 1987 |
| 4654659 |
Single channel remote controlled toy having multiple outputs |
Mar. 31, 1987 |
| 4642633 |
Individual simulcast station control system |
Feb. 10, 1987 |
| 4626847 |
Remote control transmitter system |
Dec. 2, 1986 |
| 4583217 |
Method of access control in a communication system using orthogonal functions |
Apr. 15, 1986 |
| 4554542 |
Guard tone capture method |
Nov. 19, 1985 |
| 4500881 |
Inductively-coupled signalling system |
Feb. 19, 1985 |
| 4482947 |
Multi-function, multi-unit remote control system and method therefor |
Nov. 13, 1984 |
| 4463341 |
Single conductor multi-frequency electric wiring system for vehicles |
Jul. 31, 1984 |
| 4410789 |
Remote control for welding machine amperage |
Oct. 18, 1983 |
| 4405924 |
Remote control switch apparatus for automobiles |
Sep. 20, 1983 |
| 4398193 |
Control apparatus |
Aug. 9, 1983 |
| 4390877 |
Remote control systems for toy vehicles, and the like |
Jun. 28, 1983 |
| 4390863 |
System for the transmission of binary signals between the components of an alarm system |
Jun. 28, 1983 |
| 4360808 |
Radio control apparatus with voice transmission capability |
Nov. 23, 1982 |
| 4352202 |
Combined remote control for wireless communication equipment and associated antenna |
Sep. 28, 1982 |
| 4231019 |
Remote control arrangement for a medical appliance |
Oct. 28, 1980 |
| 4211998 |
Method of and remote control apparatus for remotely controlling a medical appliance |
Jul. 8, 1980 |
| 4177453 |
Digital remote control system with improved noise immunity |
Dec. 4, 1979 |
| 4127852 |
Power use alarm |
Nov. 28, 1978 |
| 4121053 |
Telephone command apparatus |
Oct. 17, 1978 |
| 4104592 |
Remote control of a mobile underground machine, particularly in a mine |
Aug. 1, 1978 |
| 4074234 |
Control system for an aerial device |
Feb. 14, 1978 |
| 4064367 |
Dual tone selector with answerback signalling |
Dec. 20, 1977 |
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