JPS5630330A - Digital level detector - Google Patents

Digital level detector

Info

Publication number
JPS5630330A
JPS5630330A JP10592779A JP10592779A JPS5630330A JP S5630330 A JPS5630330 A JP S5630330A JP 10592779 A JP10592779 A JP 10592779A JP 10592779 A JP10592779 A JP 10592779A JP S5630330 A JPS5630330 A JP S5630330A
Authority
JP
Japan
Prior art keywords
terminal
output
seconds
reception level
outputted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP10592779A
Other languages
Japanese (ja)
Other versions
JPS5944827B2 (en
Inventor
Fumiyuki Adachi
Hiroshi Yoshida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP54105927A priority Critical patent/JPS5944827B2/en
Publication of JPS5630330A publication Critical patent/JPS5630330A/en
Publication of JPS5944827B2 publication Critical patent/JPS5944827B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/46—Monitoring; Testing
    • H04B3/48—Testing attenuation

Abstract

PURPOSE:To improve the estimation precision of a mean reception level while obtaining the mean reception level of T seconds continuously by generating an output of the N-sample sum at intervals of T/N seconds. CONSTITUTION:A receiver IF level, supplied from input terminal 1, is sampled by A/D converter 2 at interval of T/N seconds in period and M-bit digital information is sent out from terminal 3. The output signal from terminal 3 is delayed (T seconds) by delay circuit 4 as long as N samples and outputted to terminal 5. The difference between this output and the output of terminal 3 is calculated by digital subtracter 6 and outputted to terminal 7. This output is successively added by digital adder 8, whose output is sent to terminal 9. This constitution provides continuous measurement of a mean reception level extending for T seconds.
JP54105927A 1979-08-22 1979-08-22 Digital level detector Expired JPS5944827B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54105927A JPS5944827B2 (en) 1979-08-22 1979-08-22 Digital level detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54105927A JPS5944827B2 (en) 1979-08-22 1979-08-22 Digital level detector

Publications (2)

Publication Number Publication Date
JPS5630330A true JPS5630330A (en) 1981-03-26
JPS5944827B2 JPS5944827B2 (en) 1984-11-01

Family

ID=14420482

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54105927A Expired JPS5944827B2 (en) 1979-08-22 1979-08-22 Digital level detector

Country Status (1)

Country Link
JP (1) JPS5944827B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62128227A (en) * 1985-11-28 1987-06-10 Nippon Telegr & Teleph Corp <Ntt> System for detecting location of mobile station
JPS6296581U (en) * 1985-12-05 1987-06-19
JPH03210835A (en) * 1990-01-13 1991-09-13 Toyota Autom Loom Works Ltd Method for discriminating position of travelling object in travelling object communication

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62128227A (en) * 1985-11-28 1987-06-10 Nippon Telegr & Teleph Corp <Ntt> System for detecting location of mobile station
JPS6296581U (en) * 1985-12-05 1987-06-19
JPH03210835A (en) * 1990-01-13 1991-09-13 Toyota Autom Loom Works Ltd Method for discriminating position of travelling object in travelling object communication

Also Published As

Publication number Publication date
JPS5944827B2 (en) 1984-11-01

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