Title:
PULL-IN DEVICE
Document Type and Number:
Japanese Patent JP3176801
Kind Code:
B2
Abstract:
PURPOSE: To prevent a shift and jitter of a transmitted wave and interference onto adjacent slots by detecting a TDMA timing in space with precession of 1/m symbol and then transmitting data.
CONSTITUTION: A correction counter 24 generates a correction timing (by 11 basic clocks) corresponding to a correction value=11 based on a correction start timing 17 from a TDMA timing generator 7. A correction device 4 provides an output of a period correction clock 14 applying lead correction to a base clock 12 by generating 22 clocks of the correction clock 11 whose timing width is twice based on the correction clock 11 and on the correction timing 15 by 11 basic clocks. A 1/m frequency divider 5 applies 1/m frequency division to the synchronization correction clock 14 to generate a symbol clock. Thus, the correction start timing 17 is set after a slot is received and before a slot is sent, then digital transmission data sent in the transmission slot timing are sent with the accuracy of 1/m symbol with respect to the TDMA timing in space.
Inventors:
Shunichi Wakamatsu
Application Number:
JP15636994A
Publication Date:
June 18, 2001
Filing Date:
June 16, 1994
Export Citation:
Assignee:
Hitachi Kokusai Electric Co., Ltd.
International Classes:
H04J3/00; H04B7/26; H04J3/06; H04L7/08; (IPC1-7): H04B7/26; H04J3/00; H04L7/08
Domestic Patent References:
| JP5199149A |
Attorney, Agent or Firm:
Manabu Otsuka