Patent ID: 6563534
Filing Date: 2003-05-13
Classification: H04N

Abstract:
A high definition television camera apparatus, comprising:a high definition television image pickup apparatus including a high definition television image pickup element for outputting a high definition television video signal, and a high definition television video signal correction circuit, coupled to said high definition television image pickup element, for correcting a gamma value of said high definition television video signal supplied from said image pickup element so as to have a first predetermined characteristic value being suitable for high definition television system; a transmission path for transmitting said corrected high definition television video signal supplied from said high definition television image pickup apparatus; and a camera control apparatus including a television signal conversion circuit, coupled to said transmission path, for converting said corrected high definition television video signal transmitted via said transmission path into a first standard television video signal, a standard television video signal correction circuit, coupled to said television signal conversion circuit, for correcting a gamma value of said first standard television video signal supplied from said television signal conversion circuit so that said first standard television video signal is corrected to have a second predetermined characteristic value being suitable for standard television system, said corrected first standard television signal being supplied as a second standard television video signal, a standard television video signal output terminal coupled with said standard television video signal correction circuit, and a high definition television video signal output terminal coupled with said transmission path, wherein said high definition television video signal correction circuit further corrects at least one of detail, black balance and masking values of said high definition television video signal supplied from said image pickup element so as to have a proper value for said high definition television video signal and output the high definition television video signal having said first predetermined characteristic value, and wherein said standard television video signal correction circuit further corrects at least one of detail, black balance and masking values of said standard television video signal supplied from said television signal conversion circuit so as to have a proper value for said standard television video signal and outputs said standard television video signal having said second predetermined characteristic value.