Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2005-11-18
2010-11-23
Dang, Duy M (Department: 2624)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C382S232000
Reexamination Certificate
active
07839932
ABSTRACT:
In high-end professional video cameras, a triax system transfers various signals back and forth over a single coaxial cable between the camera and a base unit using frequency multiplexing. Current low-cost camera systems transfer several signals as analogue signals over separate wires or cables. However, a standard serial SDI signal from the camera to a base unit replaces the analogue camera CVBS video output signal achieving a maximum data rate of 270 Mbit/s. To improve efficiency, a single SDI or HDSDI connection transmits a digital playback video signal as well as a digital teleprompter video signal from the base unit to the camera. A one-dimensional adaptive dynamic range compression reduces the data word length of the two video signals transmitted via the SDI/HDSDI connection. A smaller data word length is assigned to one of the two video signals than to the data word length of the other one.
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European Search Report for EP04292882, dated Apr. 19, 2005.
Kuppens Chris
Rotte Jeroen
van Rooy Jan
Dang Duy M
Levy Robert B.
Shedd Robert D.
Thomson Licensing
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