Title (en)

APPARATUS AND METHOD FOR DIGITIZED VIDEO SYSTEM

Publication

EP 0385706 A3 19910731 (EN)

Application

EP 90302049 A 19900227

Priority

• US 31566189 A 19890227
• US 31574589 A 19890227
• US 31593989 A 19890227

Abstract (en)

[origin: EP0385706A2] A digitized video system with an increased viewing angle having a light projector and a display screen. The light projector generating a plurality of narrow light beams to impinge on the display screen at a plurality of associated points. The display screen has a transducer generating surface acoustic waves which traverse the associated points. This results in reduced laser speckle.

IPC 1-7

G09F 9/37; G02B 6/08

IPC 8 full level

G02B 26/08 (2006.01); G09F 9/00 (2006.01); G09F 19/18 (2006.01); G09G 3/02 (2006.01); G09G 3/20 (2006.01); G09G 3/34 (2006.01); H04N 13/04 (2006.01)

CPC (source: EP)

G09F 19/18 (2013.01)

Citation (search report)

• [A] EP 0139991 A2 19850508 - TEXAS INSTRUMENTS INC [US]
• [Y] PATENT ABSTRACTS OF JAPAN, vol. 4, no. 107 (P-21)[589], 31st July 1980; & JP-A-55 065 940 (MATSUSHITA DENKI SANGYO K.K.) 17-05-1980
• [Y] PATENT ABSTRACTS OF JAPAN, vol. 6, no. 151 (E-124)[1029], 11th August 1982; & JP-A-57 72 392 (MITSUBISHI DENKI K.K.) 06-05-1982
• [AD] IEEE TRANSACTIONS ON SONICS AND ULTRASONICS, vol. SU-23, no. 1, January 1976, pages 2-22; IC. CHANG: "I. Acoustooptic devices and applications"

Designated contracting state (EPC)

DE FR GB IT NL

DOCDB simple family (publication)

EP 0385706 A2 19900905; EP 0385706 A3 19910731; EP 0385706 B1 19950503; DE 69019043 D1 19950608; DE 69019043 T2 19950831; JP H0340694 A 19910221

DOCDB simple family (application)

EP 90302049 A 19900227; DE 69019043 T 19900227; JP 4711290 A 19900227