公开(公告)号：US3686575A

公开(公告)日：1972-08-22

申请号：US3686575D

申请日：1970-02-26

Applicant: ADMIRAL CORP

Inventor： CHAMBERLAIN RICHARD TRAVERS

IPC: H03J5/24 ,  H04B1/06

CPC classification number: H03J5/244

Abstract: A television tuner control circuit which provides equal presentation of all channels on the VHF and UHF bands is disclosed. The tuner used in combination with the circuit of this invention is capable of receiving both VHF and UHF channels, and includes a plurality of tuned resonant circuits including voltage controlled impedance and switching elements. The control circuit includes a sequential switch for selecting between VHF and UHF bands of broadcast channels and a variable voltage supply device for controlling the impedance and switching elements and thus selecting the channel of interest within the chosen band of frequencies. Utilizing the control circuit of this invention, a single control on the television receiver''s control panel may be used to select any station on the VHF and UHF bands.

Abstract translation: 公开了一种在VHF和UHF频带上提供所有信道的相等呈现的电视调谐器控制电路。 与本发明的电路组合使用的调谐器能够接收VHF和UHF信道，并且包括多个调谐谐振电路，包括电压控制的阻抗和开关元件。 控制电路包括用于在广播频道的VHF和UHF频带之间进行选择的顺序开关和用于控制阻抗和开关元件的可变电压供应装置，从而选择所选择的频带内的感兴趣的频道。 利用本发明的控制电路，可以使用电视接收机控制面板上的单个控制来选择VHF和UHF频带上的任何站。

公开(公告)号：US3896330A

公开(公告)日：1975-07-22

申请号：US7602270

申请日：1970-09-28

Applicant: ADMIRAL CORP

Inventor： CHAMBERLAIN RICHARD TRAVERS

IPC: H04N9/29 ,  H01J31/20 ,  H01F13/00 ,  H01J29/98

CPC classification number: H04N9/29

Abstract: A degaussing circuit for a television receiver is disclosed including means to provide manually controlled or automatic degaussing of a color cathode ray tube and means for visually displaying on the television screen the effect of the degaussing action. In normal operation, automatic degaussing is accomplished each time the receiver is turned on, without an accompanying visual display. When a manual switch is closed to initiate degaussing during receiver operation, a boost voltage is removed from green and blue screen controls of the color tube contemporaneously with the energizing of the degaussing means. A predominantly red field remains on the face of the picture tube. Because a single color predominates, the degaussing action is clearly visible; when the degaussing is complete a pure red field appears on the tube face, indicating the completion of degaussing action and the purity condition of the tube.