Title:
DIGITAL TYPE PHASE SYNCHRONIZER TOWARD SAME FREQUENCY SIGNALAND PARTICULARLY SIGNAL DEMODULATOR
Document Type and Number:
Japanese Patent JPS60142638
Kind Code:
A
Abstract:
One of the signals (B) at the same frequency which are to be submitted to phase synchronization is generated at multiple frequency (A) by a frequency generator 11, and then submitted to frequency division in a frequency divider 6. A phase detector 13 detects the phase error between the above mentioned signals and a digital phase error detector 9 transforms said phase error into a digital control signal for a lead/lag circuit 5 for advancing or delaying the commutation instants of digital signals, which circuit 5 is interposed between said frequency generator 11 and said frequency divider 6. The signal B forms a reconstructed carrier for demodulating received signal M by beating 7 and filtering 12, e.g. in a television.
Inventors:
GUIDO TORETSURI
BUINSENTSUIO DANIERU
JIOBANNI SAROMOONE
BUINSENTSUIO DANIERU
JIOBANNI SAROMOONE
Application Number:
JP26095984A
Publication Date:
July 27, 1985
Filing Date:
December 12, 1984
Export Citation:
Assignee:
ATES COMPONENTI ELETTRON
International Classes:
H03D1/22; H03L7/00; H04J1/02; H04L7/033; H04N5/455; (IPC1-7): H04J1/02; H04L7/02; H04N5/455
Domestic Patent References:
| JPS5378711A | 1978-07-12 |
Attorney, Agent or Firm:
Shinichi Ogawa