JPS6467012A - Pulse count system fm demodulation circuit - Google Patents

Pulse count system fm demodulation circuit

Info

Publication number
JPS6467012A
JPS6467012A JP22331587A JP22331587A JPS6467012A JP S6467012 A JPS6467012 A JP S6467012A JP 22331587 A JP22331587 A JP 22331587A JP 22331587 A JP22331587 A JP 22331587A JP S6467012 A JPS6467012 A JP S6467012A
Authority
JP
Japan
Prior art keywords
capacitor
count
state
demodulation circuit
pulse count
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
JP22331587A
Other languages
Japanese (ja)
Inventor
Hideyuki Hagino
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP22331587A priority Critical patent/JPS6467012A/en
Publication of JPS6467012A publication Critical patent/JPS6467012A/en
Pending legal-status Critical Current

Links

Landscapes

  • Television Signal Processing For Recording (AREA)

Abstract

PURPOSE:To improve the linearity of a demodulation output by constituting the titled circuit such that no undesired charge is stored in a capacitor for count so as to make the count operation of the capacitor accurate. CONSTITUTION:Constant current source 51, 61, 62 are connected respectively to each of the circuits of two differential transistor(TR) sets so as to avoid the storage of undesired charge in the count capacitor 52 when the state is transited from the on-state of one TR of one set among two sets of differential pair TRs connected in parallel to extract the output into the on-state of the other TR of the other set. Thus, the count time of the capacitor 52 affected by the frequency of an input signal is prevented and the FM demodulation output with good linearity is obtained.
JP22331587A 1987-09-07 1987-09-07 Pulse count system fm demodulation circuit Pending JPS6467012A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22331587A JPS6467012A (en) 1987-09-07 1987-09-07 Pulse count system fm demodulation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22331587A JPS6467012A (en) 1987-09-07 1987-09-07 Pulse count system fm demodulation circuit

Publications (1)

Publication Number Publication Date
JPS6467012A true JPS6467012A (en) 1989-03-13

Family

ID=16796225

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22331587A Pending JPS6467012A (en) 1987-09-07 1987-09-07 Pulse count system fm demodulation circuit

Country Status (1)

Country Link
JP (1) JPS6467012A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993017491A1 (en) * 1989-10-06 1993-09-02 Hiroya Itoh Fm demodulation circuit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5738007A (en) * 1980-08-19 1982-03-02 Matsushita Electric Ind Co Ltd Fm demodulator
JPS6171707A (en) * 1984-09-14 1986-04-12 Toshiba Corp Fm demodulation circuit
JPS61145905A (en) * 1984-12-19 1986-07-03 Rohm Co Ltd Fm demodulation circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5738007A (en) * 1980-08-19 1982-03-02 Matsushita Electric Ind Co Ltd Fm demodulator
JPS6171707A (en) * 1984-09-14 1986-04-12 Toshiba Corp Fm demodulation circuit
JPS61145905A (en) * 1984-12-19 1986-07-03 Rohm Co Ltd Fm demodulation circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993017491A1 (en) * 1989-10-06 1993-09-02 Hiroya Itoh Fm demodulation circuit

Similar Documents

Publication Publication Date Title
GB1410380A (en) Tone control circuit
GB1532658A (en) Charge-coupled amplifier
JPS6467012A (en) Pulse count system fm demodulation circuit
JPS5547711A (en) Amplifying circuit
JPS5412539A (en) Integrating circuit
JPS6465921A (en) Waveform shaping circuit
JPS53107259A (en) Compensator for delay of envelope
JPS6467011A (en) Pulse count system fm demodulation circuit
JPS566530A (en) Multiinput analog switch circuit
JPS54100652A (en) Sampler
JPS5568729A (en) Input circuit with input level decision
JPS55166342A (en) Minute potential difference comparing circuit
JPS5527926A (en) Electronic clock
JPS57116401A (en) Frequency multiplying circuit
JPS561621A (en) Signal switching circuit
JPS5711505A (en) Frequency multiplying circuit
JPS6451745A (en) Data reception circuit
JPS5468601A (en) Muting circuit
JPS53102653A (en) Rc oscillating circuit
JPS5456350A (en) Exclusive logical sum circuit
JPS57106914A (en) Current limiting circuit
JPS53132251A (en) Current selection circuit
JPS5783829A (en) Reference voltage generating circuit
SE8001394L (en) RADIO RECEIVERS WITH ELECTRONIC VOTING
JPS6469107A (en) Inverting circuit