公开(公告)号：KR840002200Y1

公开(公告)日：1984-10-23

申请号：KR840008693

申请日：1984-09-03

Applicant: RCA CORP

Inventor： FITZGERALD WILLIAM V

IPC: H04N3/16 ,  H04N17/04

公开(公告)号：CA1156319A

公开(公告)日：1983-11-01

申请号：CA370073

申请日：1981-02-04

Applicant: RCA CORP

Inventor： FITZGERALD WILLIAM V

IPC: H04N3/16 ,  H04N17/04 ,  H04N9/62

Abstract: RCA 75,108 In a television receiver having a vertical oscillator for providing a source of vertical deflection signals to a vertical deflection circuit, a service switch having normal and service positions is coupled to the vertical oscillator through an interference isolating diode. In the normal position, the diode is reverse biased, allowing the oscillator to function normally while eliminating the introduction of signal interference into the oscillator. While in the service position, the switch causes the diode to become forward biased, thereby disabling the oscillator and collapsing the vertical scan.

公开(公告)号：CA1245350A

公开(公告)日：1988-11-22

申请号：CA533155

申请日：1987-03-27

Applicant: RCA CORP

Inventor： FITZGERALD WILLIAM V ,  FERNSLER RONALD E ,  NORTRUP KEVIN E

IPC: H02M3/28 ,  H02M3/335 ,  H04N3/18 ,  H04N5/63

Abstract: An input signal for controlling a television power supply has "power-on" and "power-off" signal states. When the input signal is in the "power-on" state, it couples a clock signal to a primary winding of a transformer causing an alternating current voltage that is conductively isolated from the input signal to be developed across a secondary winding of the transformer. When the input signal is in the "power-off" state, it decouples the clock signal from the primary winding so that no alternating current voltage is developed across the secondary winding. The signal across the secondary winding is demodulated in a demodulator that produces a control signal that is conductively isolated from the input signal. The control signal is coupled to a regulator of the power supply. A power-on state of the control signal occurs when the alternating current voltage is developed at the secondary winding terminal. A power-off state of the control signal occurs when the alternating current voltage is absent.

公开(公告)号：CA1213366A

公开(公告)日：1986-10-28

申请号：CA443835

申请日：1983-12-20

Applicant: RCA CORP

Inventor： FITZGERALD WILLIAM V

IPC: H02M3/335 ,  H04N5/63

Abstract: The raster scanned by a television receiver deflection circuit (36) is subject to an increase in size resulting from a decrease in high voltage level caused by increasing electron beam current. The receiver comprises a switched mode power supply (16) producing a voltage that is used to power the deflection circuit (36) and generate the high voltage. The voltage supply level incorporates an ac ripple component caused by loading on the supply due to increasing beam current. A peak detector (69) senses the peak level of the voltage supply and applies it to a regulator control circuit (52) which maintains the peak level of the supply voltage constant. Increasing beam current loads the supply, decreasing the average dc voltage level applied to the deflection circuit (36), thereby decreasing the electron beam scan to compensate for a reduction in high voltage level.