Title:
VIDEO SIGNAL PROCESSING CIRCUIT
Document Type and Number:
Japanese Patent JP2513557
Kind Code:
B2
Abstract:
PURPOSE: To facilitate a double line frequency non-interlace scanning processing for a primary color signal from an external signal source by doubling a line scanning frequency after generating the primary color signal, in the case that a video signal with a standard line frequency is converted into a non-interlace scanning signal.
CONSTITUTION: A video signal Vin with a standard line frequency is given to a comb-line filter 20, in which the signal is separated into a luminance signal Ycm and a chrominance signal (c), each color difference signal is generated via a color demodulator 33 and a matrix 34, an adder stage 36 synthesizes the luminance signal Y and the color difference signal to obtain primary color signals R, G, B. Primary color signals Re, Ge, Be with a standard line frequency are supplied from an external signal source 38. A changeover switch 40a selects one of the R, G, B or the Re, Ge, Be, and the selected signals are fed to a high-speed processing circuit 37, from which the primary color signals with a double line frequency are obtained.
Inventors:
DENISU PIITA DOOSHII
UORUTA EDOGA SETSUPU
DARUTON HARORUDO PURICHAADO
UORUTA EDOGA SETSUPU
DARUTON HARORUDO PURICHAADO
Application Number:
JP9385492A
Publication Date:
July 03, 1996
Filing Date:
March 19, 1992
Export Citation:
Assignee:
AARU SHII EE TOMUSON RAISENSHINGU CORP
International Classes:
H04N11/20; H04N5/44; H04N9/64; (IPC1-7): H04N11/20; H04N9/64
Attorney, Agent or Firm:
Hiroshi Tanaka (1 outside)