公开(公告)号：CA930464A

公开(公告)日：1973-07-17

申请号：CA82136

申请日：1970-05-07

Applicant: MOTOROLA INC

Inventor： SLAVIK W ,  IVAS T ,  HANSEN R

IPC: H04N9/64

Abstract: A color television receiver providing for the direct demodulation of the red, blue and green color representative signals includes an additional pair of hue control demodulators for demodulating color difference signals on opposite sides of the I-axis by equal amounts. The outputs of the hue control demodulators are inverted with respect to one another and are supplied to an adder, which provides a DC control voltage indicative of the relative difference in the amplitudes of the signals obtained from the hue control demodulators. This control voltage then is supplied to a DC controlled variable hue control circuit which shifts the relative phase between the color sync oscillator output and the subcarrier to the demodulators by an amount sufficient to maintain the average outputs of the two hue control demodulators equal in amplitude.

公开(公告)号：CA930016A

公开(公告)日：1973-07-10

申请号：CA109224

申请日：1971-03-31

Applicant: MOTOROLA INC

Inventor： HANSEN R ,  SLAVIK W

IPC: H04N9/29

Abstract: A degaussing circuit used in a color television receiver includes a positive temperature coefficient resistor connected in series with the degassing coil, and in addition includes a circuit coupled with the filament winding of the receiver for applying a current through the coil in phase opposition to the current through the positive temperature coefficient resistor. The opposition current is of a magnitude equal to the residual current through the positive temperature coefficient resistor to reduce the current in the degaussing coil to zero after the degaussing operation is complete.

公开(公告)号：BR7017850D0

公开(公告)日：1973-01-11

申请号：BR21785070

申请日：1970-03-30

Applicant: MOTOROLA INC

Inventor： HANSEN R ,  SLAVIK W ,  SEYMOUR A

IPC: H04N9/68