公开(公告)号：US3924191A

公开(公告)日：1975-12-02

申请号：US45702174

申请日：1974-04-01

Applicant: ZENITH RADIO CORP

Inventor： COLLINS JOHNNY ,  HENDRICKSON MELVIN C

IPC: H03J5/02 ,  H04B1/16

CPC classification number: H03J5/0227 ,  H03J5/0236

Abstract: A varactor tuner television receiver touch-tuning system includes a clock pulse-driven counter supplying a binary to decimal converter, which is coupled to an analog switch for sequentially transferring control of the tuner among a plurality of tuning positions. A tuning potentiometer, a position indicator and a position switch are located at each tuning position. Upon closure of any position switch, a transistor switch is enabled to start the counter. The transistor switch is disabled to stop the counter when the selected tuning position is reached.

Abstract translation: 变容二极管调谐器电视接收机触摸调谐系统包括提供二进制到十进制转换器的时钟脉冲驱动计数器，其耦合到用于在多个调谐位置之间依次传送调谐器的控制的模拟开关。 调谐电位器，位置指示器和位置开关位于每个调谐位置。 在任何位置开关闭合时，晶体管开关启动计数器。 当达到所选调谐位置时，晶体管开关被禁止停止计数器。