发明名称 |
Apparatus for receiving digital signal. |
摘要 |
The apparatus for receiving a digital signal in which synchronization data is inserted at a predetermined period and in which a timing signal in synchronism with the synchronization data is developed from a digitally modulated input digital comprises a circuit (21) for generating detection signals (S1,S2) indicative of a sampling frequency of the input digital signal (RX) on the basis of the synchronization data; a first window generating circuit (4) for generating signals of different frequency based on stable clock signals and using the detecting signals to select one of the signals as a first reference signal (RE1); a second window generating circuit (5) for generating a second reference signal (HE2) in synchronism with the synchronization data on the basis of an output signal from a phase-locked loop (7); and a selector (6) for supplying the first reference signal (RE1) to the phase-locked loop (7) for a period during which the loop becomes stable and supplying the second reference signal (RE2) to the phase-locked loop (7) after expiration of the period , thereby enabling the generation of stable timing signals with respect to an input digital signal having different sampling frequencies. |
申请公布号 |
EP0360691(B1) |
申请公布日期 |
1995.04.12 |
申请号 |
EP19890402581 |
申请日期 |
1989.09.20 |
申请人 |
SONY CORPORATION |
发明人 |
FUJIYAMA, TADATAKA C/O SONY CORPORATION |
分类号 |
G11B20/10;H04L7/033;H04L7/06;H04L25/02 |
主分类号 |
G11B20/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|