Color television camera system having solid-state opto-electric transducers for luminance and chrominance signals

US4246598A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Gerd Bock · Seeheim-Jugenheim, DE
• Gerd Brand · Didderse, DE

Key dates

• Filing date: Nov 16, 1979
• Grant date: Jan 20, 1981
• Expiry date: Nov 16, 1999

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04N25/447
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

To simplify television cameras, particularly of the type previously disclosed in U.S. Pat. No. 4,163,247, Bock et al, the green (or white) content of an image and the red/blue content of an image are transduced by two-dimensional semiconductor sensors which include read-out and storage sections, the read-out being controlled by shift registers which, in turn, operate under control of a clock generator. The luminance of the signal is derived by reading out the luminance portion during the line scanning interval and the thus read out signal is immediately re-stored in the storage portion of the luminance transducer; the chrominance signal is read out from the chrominance sensor during the line blanking interval; during this interval, the re-stored luminance portion is likewise read out and combined with the chrominance portion to form a difference signal. The overall output then will be a time multiplexed luminance signal, at the line scanning rate, and a compressed chrominance signal, read out during the line blanking interval. Additional synchronization signals may be combined with this signal if the read-out rate during the line blanking interval is suitably selected to allocate t…