Automatic rearview mirror system using a photosensor array

Optical: systems and elements – Glare or unwanted light reduction – With mirror

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

359601, G02B 508

Patent

active

057609624

ABSTRACT:
A system apparatus, structure and method for controlling a plurality of variable reflectance mirrors (or mirror segments), including a rearview mirror and side view mirrors, which change their reflectance level in response to a plurality of drive voltages applied thereto, for an automotive vehicle. The system includes a light sensing device and a control circuit formed as a single VLSI CMOS circuit. The light sensing device comprises a photosensor array having a field of view encompassing a rear window area and at least a portion of at least one side window area of the vehicle. The logic and control circuit determines a background light signal from photosensor element signals generated by the photosensor elements in the photosensor array indicative of light levels incident on the photosensor elements. The circuit also determines a peak light signal in three different zones or sub-arrays of the photosensor array. The zones or sub-arrays may correspond to three mirrors or mirror segments. The peak light signals in each of the zones and a common background light signal are used to determine independent and separate control signals, which are then output to separate mirror drive circuits for independently controlling the reflectance level of the rearview mirror and the left and right side view mirrors, or alternatively the segments of a mirror.

REFERENCES:
patent: 3601614 (1971-08-01), Platzer, Jr.
patent: 3612666 (1971-10-01), Rabinow
patent: 3665224 (1972-05-01), Kelsey
patent: 3680951 (1972-08-01), Jordan et al.
patent: 3746430 (1973-07-01), Brean et al.
patent: 3807832 (1974-04-01), Castellion
patent: 3811046 (1974-05-01), Levick
patent: 3813540 (1974-05-01), Albrecht
patent: 3862798 (1975-01-01), Hopkins
patent: 3962600 (1976-06-01), Pittman
patent: 3986022 (1976-10-01), Hyatt
patent: 4161653 (1979-07-01), Bedini et al.
patent: 4200361 (1980-04-01), Malvano et al.
patent: 4249160 (1981-02-01), Chilvers
patent: 4266856 (1981-05-01), Wainwright
patent: 4281898 (1981-08-01), Ochiai et al.
patent: 4443057 (1984-04-01), Bauer et al.
patent: 4512637 (1985-04-01), Ballmer
patent: 4529275 (1985-07-01), Ballmer
patent: 4529873 (1985-07-01), Ballmer et al.
patent: 4572619 (1986-02-01), Reininger et al.
patent: 4580875 (1986-04-01), Bechtel et al.
patent: 4603946 (1986-08-01), Kato et al.
patent: 4614415 (1986-09-01), Hyatt
patent: 4623222 (1986-11-01), Itoh et al.
patent: 4629941 (1986-12-01), Ellis et al.
patent: 4632509 (1986-12-01), Ohmi et al.
patent: 4669825 (1987-06-01), Itoh et al.
patent: 4669826 (1987-06-01), Itoh et al.
patent: 4671615 (1987-06-01), Fukada et al.
patent: 4672457 (1987-06-01), Hyatt
patent: 4676601 (1987-06-01), Itoh et al.
patent: 4690508 (1987-09-01), Jacob
patent: 4697883 (1987-10-01), Suzuki et al.
patent: 4701022 (1987-10-01), Jacob
patent: 4727290 (1988-02-01), Smith et al.
patent: 4741603 (1988-05-01), Miyagi et al.
patent: 4793690 (1988-12-01), Gahan et al.
patent: 4820933 (1989-04-01), Hong et al.
patent: 4838650 (1989-06-01), Stewart et al.
patent: 4886960 (1989-12-01), Molyneux et al.
patent: 4896030 (1990-01-01), Miyaji
patent: 4916374 (1990-04-01), Schierbeek et al.
patent: 4917477 (1990-04-01), Bechtel et al.
patent: 4956591 (1990-09-01), Schierbeek et al.
patent: 4991054 (1991-02-01), Walters
patent: 5148014 (1992-09-01), Lynam et al.
patent: 5168378 (1992-12-01), Black et al.
patent: 5193029 (1993-03-01), Schofield et al.
patent: 5204778 (1993-04-01), Bechtel
patent: 5469296 (1995-11-01), Ohno et al.
patent: 5510609 (1996-04-01), Ackerman
patent: 5550677 (1996-08-01), Schofield et al.
patent: 5581406 (1996-12-01), Kobayashi et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Automatic rearview mirror system using a photosensor array does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Automatic rearview mirror system using a photosensor array, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic rearview mirror system using a photosensor array will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1467279

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.