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 2 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
Video surveillance system employing video primitives
Semiconductor device and method for fabricating the same
System and method for deriving cell global identity information
Cooking brush
Dynamically reconfigurable systolic array accelorators
Prodrugs of [4 [4-(5-Aminomethyl-2-fluoro-phenyl)-piperidin-1-yl]-(1H-pyrrolo-pyridin-yl- )-methanones and synthesis thereof
Method and system for detecting center pivot collision
  Randomly Featured Patents
Distributed direct memory access provision within a data processing system
Swinging bob toy
Rock screen with particle trap
Storage medium storing relation management control program, device, and system
Radio-opaque bioactive glass materials
Communication apparatus and control method thereof
Dianthus plant named `Faith`
Alkaline primary cell with cathode of potassium permanganate with lithium hydroxide
Method for controlling a device by means of pulse duration modulation and control system
IP base LSI designing system and designing method