Title:
【発明の名称】無線送信装置の周波数設定方式
Document Type and Number:
Japanese Patent JPH07101865
Kind Code:
B2
Abstract:
A frequency setting system for a radio transmission apparatus of the type transmitting a signal in the form of bursts and changing transmission frequency burst by burst. A frequency division data generator (30) feeds both a frequency division data signal representative of a frequency division number and a strobe signal representative of frequency setting to a frequency synchesizer (20). A strobe pulse is fed to the frequency synthesizer immediately after the end of the preceding burst. The frequency division data signal for the next burst can then be sent at any time in the period between that strobe pulse and the end of the burst to which it relates. The timings for generating the frequency division data signal and strobe signal do not need to be determined with regard to the locking time of the frequency synthesizer which is dependent on the kind of the synthesizer, and the frequency, etc.
Inventors:
Hiroyuki Shimizu
Application Number:
JP15961789A
Publication Date:
November 01, 1995
Filing Date:
June 23, 1989
Export Citation:
Assignee:
NEC
International Classes:
H04J13/00; H03J5/02; H04B1/7136; H04J4/00; (IPC1-7): H04J4/00
Attorney, Agent or Firm:
Yoshiyuki Iwasa
Previous Patent: Converter device, motor drive device and air conditioner
Next Patent: タンデムスクランブル装置を備えた通信システム
Next Patent: タンデムスクランブル装置を備えた通信システム