发明名称 |
SEARCH TYPE TUNING SYSTEM WITH DIRECT ADDRESS CHANNEL SELECTION APPARATUS |
摘要 |
<p>RCA 73,852 A signal seeking tuning system includes provisions for allowing the direct selection of channels. It includes a memory for storing lower and upper boundaries of a tuning control voltage range for each channel which may be selected. When a channel is selected, a microcomputer causes the memory location corresponding to one of the boundaries associated with the selected channel to be addressed and causes a tuning voltage generator to change the magnitude of the tuning control voltage in the direction of the boundary. A comparator determines when the tuning control voltage reaches the boundary. Thereafter, the microcomputer controls a signal seeking operation between the boundaries to tune the RF carrier associated with the selected channel.</p> |
申请公布号 |
CA1154098(A) |
申请公布日期 |
1983.09.20 |
申请号 |
CA19800360501 |
申请日期 |
1980.09.18 |
申请人 |
RCA CORPORATION |
发明人 |
HENDERSON, JOHN G. N.;MATURO, ROBERT J. |
分类号 |
H03J7/00;H03J1/00;H03J5/02;H03J5/24;H03J7/18;H03J7/22;H03J7/28;(IPC1-7):H03J7/22 |
主分类号 |
H03J7/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|