发明名称 |
Rotary recording medium having track turns recorded with digital signal and track turns recorded with analog signal |
摘要 |
A rotary recording medium has information signals recorded on a spiral or concentric tracks formed thereon as variations in geometrical configuration. The tracks comprise a mixture of digital recorded tracks which are recorded with a first modulated signal and analog recorded tracks which are recorded with a second modulated signal. The first modulated signal is a digital signal which has been time-sequentially multiplexed in terms of blocks at a transmission frequency of 44.1 kHz or a frequency extremely close to 44.1 kHz and has then been subjected to a modulation, where each of the blocks are constituted by a synchronizing signal, error correcting codes, and an error detecting code, which are added to a plurality of channels of digital data which are digitally modulated information signals. The second modulated signal is an analog modulated analog information signal at least including a composite video signal. A number of blocks recorded in one track turn of the digital recorded tracks is approximately equal to a product of the transmission frequency and a duration of one revolution of the rotary recording medium.
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申请公布号 |
US4660099(A) |
申请公布日期 |
1987.04.21 |
申请号 |
US19840609193 |
申请日期 |
1984.05.11 |
申请人 |
VICTOR COMPANY OF JAPAN, LTD. |
发明人 |
SUGIYAMA, HIROYUKI;TAKAHASHI, NOBUAKI;SHIBAMOTO, TAKESHI;NISHIKAWA, KAZUNORI;UENO, SHOJI;KOMURA, MAKOTO;SHICHIJO, SHUNICHI |
分类号 |
G11B20/02;G11B20/10;(IPC1-7):H04N5/76 |
主分类号 |
G11B20/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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