Patent ID: 6927792

Claim:
A television camera which adjusts levels of R, G, and B signals obtained through a three-color separation optical system to maintain white balance, said television camera comprising: an iris section for performing an opening/closing operation of a diaphragm of a taking lens, and outputting a diaphragm signal indicating an opening condition of the diaphragm; a microcomputer for inputting the diaphragm signal from the iris section, and setting level adjusting values of the R, G, and B signals; and white balance correcting means for adjusting levels of the R, G, and B signals according to the level adjusting values, wherein said white balance correcting means has three analog multipliers for multiplying individually the R, G, and B signals before being white balance corrected with multiplying coefficients thereto, and outputting individually the individually multiplied values as the R, G, and B signals after being white balance corrected, wherein said microcomputer stores the multiplying coefficients as said level adjusting values by bringing the multiplying coefficients into correspondence with a whole of diaphragm regions of the taking lens, wherein in a condition in which the diaphragm of the taking lens is not opened near to an opening end, said microcomputer outputs said stored multiplying coefficients to said analog multipliers, wherein in a condition in which the diaphragm of the taking lens is opened near to the opening end, said microcomputer sets individually said multiplying coefficients in such a manner that a level of at least one arbitrary signal of the R, G, and B signals is made substantially even to that of at least one of other R, G, and B signals, and outputs said individually set multiplying coefficients to said analog multipliers, wherein setting level adjusting values of the R, G, and B signals and level adjusting according to said setting are performed in response to a change in the diaphragm condition of said taking lens, and wherein said at least one arbitrary signal is the signal G.