| 发明名称 |
Video signal mixer apparatus and method |
| 摘要 |
A method and apparatus for simultaneously delivering an external source of program material and the program material normally received by a television antenna to the antenna input terminals of a television set.
|
| 申请公布号 |
US4335404(A) |
申请公布日期 |
1982.06.15 |
| 申请号 |
US19800195797 |
申请日期 |
1980.10.10 |
| 申请人 |
MARTINSON, JR., JOHN R. |
发明人 |
MARTINSON, JR., JOHN R. |
| 分类号 |
H03J5/24;H04N7/16;(IPC1-7):H04N5/44 |
主分类号 |
H03J5/24 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
