H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/59
H04N 9/73 (2006.01) H04N 3/24 (2006.01)
Patent
CA 1257691
ABSTRACT OF THE DISCLOSURE A color picture tube for displaying a color picture which has a signal supply that includes a plurality of primary color signal channels for supplying a plurality of primary color signals to the color picture tube and current detecting means connected to the signal supply so as to detect currents flowing through the color picture tube and an automatic white balance circuit for controlling the signal supply in response to the detected currents detected by the current detecting means including a power responsive circuit for generating a control signal when a power switch for the television receiver is turned on and a blanking circuit connected to the signal supply to inhibit the supply of primary color signals to the picture display means and first circuit means connected to the power responsive circuit to actuate the blanking circuit when the power switch is turned on and second circuit means connected to the current detecting means for deactuating the blanking circuit after the current which flows through the display tube exceeds a predetermined value.
500812
Sengoku Yoshinari
Tamura Takahiko
Gowling Lafleur Henderson Llp
Sony Corporation
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