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US Patent 5227762 - Power line carrier controlled lighting system
US Patent Issued on July 13, 1993
Estimated Patent Expiration Date:
October 26, 2010Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
October 26, 2010Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractA power line carrier controlled lighting system connected to an AC power line. The system has: at least one motion detector for detecting at least one predetermined parameter in a detection zone of the motion detector, the motion detector outputting at least one detect signal in response to the predetermined parameter; at least one transmitter for transmitting during a first predetermined time period a power line carrier signal on the AC power line indicative of the detect signal; at least one receiver receiving the power line carrier signal on the AC power line and outputting at least one control signal indicative of the power line carrier signal during a second predetermined time period, the receiver having an AGC circuit for providing substantial noise immunity so that the receiver reliably recognizes the power line carrier signal; and at least one light in a predetermined area and having at least two different light intensity levels, the light having a switching circuit for switching between the light intensity levels, the switching circuit being activated by the control signal. The power line carrier signal is a digital signal and the AGC circuit determines a logical one/zero reference level relative to noise on the power line. | InventorsAssigneeApplicationNo. 604568 filed on 10/26/1990US Classes:340/538Combined with power lineField of Search340/288, Combined (e.g., alarm circuit over power line)340/286.11, Annunciator340/286.02, Network signaling340/538, Combined with power line362/233, Remote adjustment or positioning means307/116, Condition responsive307/110, Parallel-charge, series-discharge (e.g., voltage doublers)315/295Regulator selectively connectable to plural circuitsExaminersPrimary: Ng, Jin F.Assistant: Swarthout, Brent A. Attorney, Agent or FirmUS Patent References2595993, 3122721, 3459961, 3670167, 3689886, 3736445, 3790848, 3818466, 3831059, 3861792, 3875554, 3878431, 3886352, 3893000, 3898383, 3901813, 3903996, 4009387, Automatic energy control lighting system with automatically variable dc sourceIssued on: 02/22/1977 Inventor: Nuver4016453, Proximity pad with controlled illumination Issued on: 04/05/1977 Inventor: Moennig4031408, Proximity switching system Issued on: 06/21/1977 Inventor: Holz4032777, Photomeric monitoring device Issued on: 06/28/1977 Inventor: McCaleb4047076, Emergency lighting system for gaseous discharge lamps Issued on: 09/06/1977 Inventor: McNamara, Jr.4071805, Interior lighting delay circuit Issued on: 01/31/1978 Inventor: Brock4095139, Light control system Issued on: 06/13/1978 Inventor: Symonds, et al.4144478, Lamp system take control dimming circuit Issued on: 03/13/1979 Inventor: Nuver4170747, Fixed frequency, variable duty cycle, square wave dimmer for high intensity gaseous discharge lamp Issued on: 10/09/1979 Inventor: Holmes4181873, High frequency dimmer circuit for high intensity, gaseous discharge lamp Issued on: 01/01/1980 Inventor: Nuver4197485, Optocoupler dimmer circuit for high intensity, gaseous discharge lamp Issued on: 04/08/1980 Inventor: Nuver4225808, Selective illumination Issued on: 09/30/1980 Inventor: Saraceni4300126, Method and apparatus, for power line communications using zero crossing load interruption Issued on: 11/10/1981 Inventor: Gajjar4367455, Powersaving room security system Issued on: 01/04/1983 Inventor: Fried4418333, Appliance control system Issued on: 11/29/1983 Inventor: Schwarzbach , et al.4450351, Motion discontinuance detection system and method Issued on: 05/22/1984 Inventor: Fraden4461977, Single zone lighting controller Issued on: 07/24/1984 Inventor: Pierpoint , et al.4477748, Solid state ballast Issued on: 10/16/1984 Inventor: Grubbs4482844, Lamp dimmer Issued on: 11/13/1984 Inventor: Schweer , et al.4523128, Remote control of dimmable electronic gas discharge lamp ballasts Issued on: 06/11/1985 Inventor: Stamm , et al.4523131, Dimmable electronic gas discharge lamp ballast Issued on: 06/11/1985 Inventor: Zansky4575684, Differential phase shift keying receiver Issued on: 03/11/1986 Inventor: Stamm4658241, Surveillance system including transmitter and receiver synchronized by power line zero crossings Issued on: 04/14/1987 Inventor: Torre4661720, Occupancy sensor Issued on: 04/28/1987 Inventor: Cameron, Jr. , et al.4675579, Coupling of carrier signal from power line Issued on: 06/23/1987 Inventor: Hardy , et al.4691341, Method of transferring digital information and street lighting control system Issued on: 09/01/1987 Inventor: Knoble , et al.4716343, Constant illumination, remotely dimmable electronic ballast Issued on: 12/29/1987 Inventor: Lindquist4744093, Method of detecting phase pulse signals from an AC distribution line Issued on: 05/10/1988 Inventor: Arai , et al.4746809, AC power line signaling system Issued on: 05/24/1988 Inventor: Coleman , et al.4755792, Security control system Issued on: 07/05/1988 Inventor: Pezzolo , et al.4757213, Non-contact operating proximity switch Issued on: 07/12/1988 Inventor: Tigges , et al.4864296, System for synchronizing signals on a two-wire line Issued on: 09/05/1989 Inventor: Trett , et al.4868539, Bi-directional multi-frequency ripple control system Issued on: 09/19/1989 Inventor: Foord4897774, Integrated dual charge pump power supply and RS-232 transmitter/receiver Issued on: 01/30/1990 Inventor: Bingham, et al.4928038, Power control circuit for discharge lamp and method of operating same Issued on: 05/22/1990 Inventor: Nerone4931701, Bi-level ballast circuit for operating HID lamps Issued on: 06/05/1990 Inventor: Carl5031082Remotely controlled security lighting Issued on: 07/09/1991 Inventor: Bierend International ClassH04M 011/04 |
