Television – Video display – Projection device
Patent
1996-09-26
1999-05-11
Lee, Michael
Television
Video display
Projection device
348770, 348742, 345 84, 345148, H04N5/74;9/12
Patent
active
059033231
ABSTRACT:
A system and technique for directing intensity modulated electromagnetic energy. The inventive system (10) includes an intensity modulated source of electromagnetic energy (12). Individual elements (22) in an array of energy directing elements (15) are activated in sync with the modulation of energy source (12). In a particular implementation, the source (12) is a laser. The intensity of the laser is reduced during each successive field per frame. The energy directing elements (15), in this case--light directing elements, are implemented with an array of digital micromirrors. The light source (12) is modulated in intensity in accordance with a fixed modulation scheme. The mirrors (22) are selectively activated relative to the light source modulation scheme. Hence, the invention provides a gray scale output while allowing the time between mirror flips to be constant. This allows the system clocks to run synchronously and greatly simplifies the writing of data into the display as the time available for writing each bit is constant.
REFERENCES:
patent: 4611889 (1986-09-01), Buzak
patent: 4683420 (1987-07-01), Goutzoulis
patent: 4786146 (1988-11-01), Ledebuhr
patent: 4843381 (1989-06-01), Baron
patent: 5214420 (1993-05-01), Thompson et al.
patent: 5327229 (1994-07-01), Konno et al.
patent: 5428366 (1995-06-01), Eichenlaub
patent: 5448314 (1995-09-01), Heimbach et al.
patent: 5668611 (1997-09-01), Ernstoff et al.
Claude Tew, "Electronic Control of a Digital Micromirror Device for Projection Displays", 1994, pp. 130-131.
Ernstoff Michael N.
Shields Steven E.
Valley George C.
Alkov Leonard A.
Lee Michael
Lenzen, Jr. Glenn H.
Raytheon Company
Schubert William C.
LandOfFree
Full color sequential image projection system incorporating time does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Full color sequential image projection system incorporating time, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Full color sequential image projection system incorporating time will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-249140