发明名称 |
Circuit for including a copy-inhibit signal with a video signal |
摘要 |
A spurious signal SSP whose frequency spectrum is located at frequencies [(N+(1/2))xfh] is multiplexed with a luminance signal Y so as to keep an interleaved relation between the spurious signal SSP and the luminance signal Y and the resultant signal is transmitted. When the spurious signal SSP is detected, the recording operation is inhibited. The spurious signal SSP is multiplexed with the luminance signal Y at a level such as not to exert an influence on the picture quality when the video signal is reproduced and seen by a monitor screen.
|
申请公布号 |
US5537216(A) |
申请公布日期 |
1996.07.16 |
申请号 |
US19950433588 |
申请日期 |
1995.05.03 |
申请人 |
SONY CORPORATION |
发明人 |
YAMASHITA, KEITARO;KAWANO, MASATOSHI |
分类号 |
G11B20/02;G01B15/04;G11B19/02;G11B20/00;H04N5/913;H04N7/16;(IPC1-7):H04N5/76;H04N7/167 |
主分类号 |
G11B20/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|