JPS5696506A - Pulse count detection circuit - Google Patents

Pulse count detection circuit

Info

Publication number
JPS5696506A
JPS5696506A JP17293679A JP17293679A JPS5696506A JP S5696506 A JPS5696506 A JP S5696506A JP 17293679 A JP17293679 A JP 17293679A JP 17293679 A JP17293679 A JP 17293679A JP S5696506 A JPS5696506 A JP S5696506A
Authority
JP
Japan
Prior art keywords
circuit
waveform shaping
inverters
input
shaping circuit
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.)
Pending
Application number
JP17293679A
Other languages
Japanese (ja)
Inventor
Koichi Saito
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.)
Alps Alpine Co Ltd
Original Assignee
Alps Electric Co Ltd
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 Alps Electric Co Ltd filed Critical Alps Electric Co Ltd
Priority to JP17293679A priority Critical patent/JPS5696506A/en
Publication of JPS5696506A publication Critical patent/JPS5696506A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
    • H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
    • H03D3/04—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by counting or integrating cycles of oscillations

Abstract

PURPOSE:To avoid the variance in DC level and the production of distortion and beat, by using a waveform shaping circuit consisting of inverters without phase split circuits. CONSTITUTION:An FM signal is made to a rectangular wave signal with a limitter 24, split via a waveform shaping circuit 25 consisting of inverters and given to differentiation circuits 26 and 29. The output differentiated at the circuit 26 is input to a waveform shaping circuit 27 and it is operated to negative pulses with an inverter in the circuit 27 to obtain positive pulses. The phase of this pulse signal is inverted at a phase inversion circuit 28 consisting of inverters and given to LPE31. On the other hand, the differentiating output of the circuit 29 is input to a waveform shaping circuit 30 and it is operated to positive pulses with an inverter in the circuit 30 to obtain negative pulses. This pulse is input to an LPF31, where high frequency is rejected, to reproduced audio signal AF.
JP17293679A 1979-12-28 1979-12-28 Pulse count detection circuit Pending JPS5696506A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17293679A JPS5696506A (en) 1979-12-28 1979-12-28 Pulse count detection circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17293679A JPS5696506A (en) 1979-12-28 1979-12-28 Pulse count detection circuit

Publications (1)

Publication Number Publication Date
JPS5696506A true JPS5696506A (en) 1981-08-04

Family

ID=15951086

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17293679A Pending JPS5696506A (en) 1979-12-28 1979-12-28 Pulse count detection circuit

Country Status (1)

Country Link
JP (1) JPS5696506A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018511196A (en) * 2015-01-27 2018-04-19 クワーン チー インテリジェント フォトニック テクノロジー リミテッド Optical communication transmitter and receiver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018511196A (en) * 2015-01-27 2018-04-19 クワーン チー インテリジェント フォトニック テクノロジー リミテッド Optical communication transmitter and receiver

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