Resources Contact Us Home
Color imaging apparatus with closed-loop control means for producing color signal frequency and phase control signals from a reference color signal and two reference index signals stored in a

Image Number 14 for United States Patent #4736243.

In a color imaging apparatus, an optical image is focused on a photoelectrical conversion target of a color image pickup tube through a color stripe filter and converted to an electrostatic image, the latter being scanned line-by-line in rectangular raster form by an electron beam to generate a color multiplexed video signal. First and second index stripe electrodes are located adjacent to edges of the raster area to be scanned at the beginning of each field and at the beginning of each line. A memory is provided to store field and line index signals generated by the index electrodes as well as a reference video signal generated by the target illuminated with light of a predetermined color. During normal viewing operations, the stored signals are retrieved from the memory for frequency and phase comparison with signals generated by the index electrodes and the target to control the phase relationship between the retrieved reference video signal with the color-multiplexed video signal to effect synchronous detection therebetween at proper timing to produce primary color signals. The retrieved index signals prevent the loss of proper timing when the target is dimly illuminated.

  Recently Added Patents
IR(voltage) drop analysis in integrated circuit timing
Pulsed plasma with low wafer temperature for ultra thin layer etches
Asynchronous line interface rate adaptation to the physical layer with synchronous lines at the connection layer
Methods, systems, and computer program product for virtually modifying surface region curvature to detect protrusions
Method and system for utilizing native ethernet as a virtual memory interconnect
System and method for providing program recommendations through multimedia searching based on established viewer preferences
End to end email monitor
  Randomly Featured Patents
Fuel grain for spherical boost-sustain rocket motor
Computer telephony system
Combined grate and water heater insert for wood burning fireplace
Star shaped container
Apparatus for expanding tubular members
Benzazepine derivatives for the treatment of neurological disorders
Food wrapper package
Optical waveguide and thermally-assisted magnetic recording head therewith
Image forming apparatus and an image forming method
Benzodiazepine derivatives