| |
 |
|
Class Information
Number: 250/206
Name: Radiant energy > Photocells; circuits and apparatus > Photocell controlled circuit
Description: Subject matter in which the photocell controls an electrical or electro-mechanical system circuit, and systems circuits under subclass 200 for supplying electric current and/or potential to a photocell.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5677526 |
Rear light detection device for an automatic antiglare mirror |
Oct. 14, 1997 |
| 5670846 |
Full power light control |
Sep. 23, 1997 |
| 5623284 |
Input device controller |
Apr. 22, 1997 |
| 5600126 |
Method and apparatus for controlling the power output of multiple laser diodes |
Feb. 4, 1997 |
| 5598000 |
Dual-mode automatic window covering system responsive to AC-induced flicker in ambient illumination |
Jan. 28, 1997 |
| 5572074 |
Compact photosensor circuit having automatic intensity range control |
Nov. 5, 1996 |
| 5552676 |
Control device for an appliance consuming electric power |
Sep. 3, 1996 |
| 5530240 |
Display for automatic rearview mirror |
Jun. 25, 1996 |
| 5517151 |
Intensity controlling circuit having fuses and EPROMs for LED-array head |
May. 14, 1996 |
| 5499168 |
Device for regulating light width of headlights of motor vehicles |
Mar. 12, 1996 |
| 5481409 |
Mirror assembly |
Jan. 2, 1996 |
| 5434475 |
Light relay with adjustable core and contact gap |
Jul. 18, 1995 |
| 5408113 |
High sensitivity improved photoelectric imaging device with a high signal to noise ratio |
Apr. 18, 1995 |
| 5406414 |
Electrochromic rearview mirror for vehicles with constant light transmitting area |
Apr. 11, 1995 |
| 5291112 |
Positioning apparatus and movement sensor |
Mar. 1, 1994 |
| 5253109 |
Electro-optic device with constant light transmitting area |
Oct. 12, 1993 |
| 5229649 |
Light-energized electronics energy management system |
Jul. 20, 1993 |
| 5204778 |
Control system for automatic rearview mirrors |
Apr. 20, 1993 |
| 5193029 |
Single sensor adaptive drive circuit for rearview mirror system |
Mar. 9, 1993 |
| 5132596 |
Outdoor lighting controls |
Jul. 21, 1992 |
| 5055840 |
Infrared touch input device and light emitted activation circuit |
Oct. 8, 1991 |
| 5047749 |
Passive remote photoelectric surveillance alarm with telescopic optics |
Sep. 10, 1991 |
| 5033827 |
Coded optical oscillator modulator |
Jul. 23, 1991 |
| 4924262 |
Shutter calibration and document size detection |
May. 8, 1990 |
| 4896030 |
Light-reflectivity controller for use with automotive rearview mirror using electrochromic element |
Jan. 23, 1990 |
| 4888477 |
Range measurement for active optical recognition devices |
Dec. 19, 1989 |
| 4886960 |
Control circuit for an automatic rearview mirror |
Dec. 12, 1989 |
| 4883348 |
Wide field optical system |
Nov. 28, 1989 |
| 4876445 |
Intrusion detection device with extended field of view |
Oct. 24, 1989 |
| 4841164 |
Light-sensitive switch structure and method with inverse off/on ratio |
Jun. 20, 1989 |
| 4833697 |
Writing instrument for electronic counting and gravity switch reset |
May. 23, 1989 |
| 4804858 |
Power supply circuit for a diode adapted to emit light in dependence of the prevailing surrounding light |
Feb. 14, 1989 |
| 4802548 |
Automatic guided vehicle safety system |
Feb. 7, 1989 |
| 4771186 |
Light-sensitive switch structure and method with inverse off/on ratio |
Sep. 13, 1988 |
| 4767934 |
Active ranging system |
Aug. 30, 1988 |
| 4755665 |
Light detector and signal processing circuit |
Jul. 5, 1988 |
| 4733103 |
Light sensitive switching circuit |
Mar. 22, 1988 |
| 4727290 |
Automatic vehicle headlamp dimming control |
Feb. 23, 1988 |
| 4726044 |
Writing instrument with solar-powered electronic counting and liquid cyrstal display |
Feb. 16, 1988 |
| 4719340 |
Method and apparatus for the observation of luminous phenomena |
Jan. 12, 1988 |
| 4694152 |
Method and apparatus for acoustic supervision of adjustment operations at optical devices |
Sep. 15, 1987 |
| 4675519 |
Toy having optically actuated sound generator |
Jun. 23, 1987 |
| 4659919 |
Optical sensing circuit for audio activation of toys |
Apr. 21, 1987 |
| 4629941 |
Differential illumination sensitive switching circuit |
Dec. 16, 1986 |
| 4612438 |
Light intensity sensor providing a variable output current |
Sep. 16, 1986 |
| 4598198 |
Automatic power control for modulated LED photoelectric devices |
Jul. 1, 1986 |
| 4567527 |
Image reading apparatus |
Jan. 28, 1986 |
| 4564756 |
Proximity sensor with a light-emitting diode which simultaneously emits and detects light |
Jan. 14, 1986 |
| 4556789 |
Measuring circuit for photo-receiving intensity of photosensor |
Dec. 3, 1985 |
| 4555624 |
High rate seed sensor |
Nov. 26, 1985 |
|
|
|
