JPH01113670A - Rotation detector - Google Patents

Rotation detector

Info

Publication number
JPH01113670A
JPH01113670A JP27065687A JP27065687A JPH01113670A JP H01113670 A JPH01113670 A JP H01113670A JP 27065687 A JP27065687 A JP 27065687A JP 27065687 A JP27065687 A JP 27065687A JP H01113670 A JPH01113670 A JP H01113670A
Authority
JP
Japan
Prior art keywords
output
rotation
circuit
pulse signal
edge detecting
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
JP27065687A
Other languages
Japanese (ja)
Inventor
Takeshi Shimohata
Makoto Goto
Naoya Okada
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP27065687A priority Critical patent/JPH01113670A/en
Publication of JPH01113670A publication Critical patent/JPH01113670A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To increase the precision of detection in the direction of rotation and to prevent the occurrence of a count error in a rotation pulse signal, by generating the rotation pulse signal delayed by a prescribed time width from a generation edge of an output signal of a two-edge detecting circuit.
CONSTITUTION: Signals S2 and S1 of two different phases being synchronous with the rotation of a motor are inputted, the rising and falling edges of the input signal S1 are detected by the two-edge detecting circuit 20, and a pulse signal (b) of a prescribed time width is outputted therefrom. An FF circuit 30 receives an output (a) of an exclusive OR circuit 10 and the output (b) of the two-edge detecting circuit 20 as inputs and outputs from NAND circuits 34 and 35 a rotation direction output Y of which an L level and an H level are inverted. The output (b) of the two-edge detecting circuit 20 and an inverted clock signal are inputted to a rotation pulse generating circuit 40, a logical product is taken in an AND circuit 42 and a rotation pulse signal P delayed by a half period of the clock from the output (b) is generated. Accordingly, the rotation pulse signal delayed invariably from the rotation direction output Y when outputted can be obtained.
COPYRIGHT: (C)1989,JPO&Japio
JP27065687A 1987-10-27 1987-10-27 Rotation detector Pending JPH01113670A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27065687A JPH01113670A (en) 1987-10-27 1987-10-27 Rotation detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27065687A JPH01113670A (en) 1987-10-27 1987-10-27 Rotation detector

Publications (1)

Publication Number Publication Date
JPH01113670A true JPH01113670A (en) 1989-05-02

Family

ID=17489127

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27065687A Pending JPH01113670A (en) 1987-10-27 1987-10-27 Rotation detector

Country Status (1)

Country Link
JP (1) JPH01113670A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0312515A (en) * 1989-06-09 1991-01-21 Matsushita Electric Ind Co Ltd Rotating direction detecting circuit
JPH0375813A (en) * 1989-08-17 1991-03-29 Matsushita Electric Ind Co Ltd Method and device for controlling menu

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0312515A (en) * 1989-06-09 1991-01-21 Matsushita Electric Ind Co Ltd Rotating direction detecting circuit
JPH0375813A (en) * 1989-08-17 1991-03-29 Matsushita Electric Ind Co Ltd Method and device for controlling menu

Similar Documents

Publication Publication Date Title
JPS61271666A (en) Dropout detector
JPH01113670A (en) Rotation detector
JPH01194552A (en) Arrangement of phase error signal generating circuit
JPS58176556A (en) Rotation detector
JPS63285774A (en) Circuit for binarizing signal
JPS6461119A (en) Pll unlock state detection circuit
JPS60211372A (en) Phase difference detector
JPH01113671A (en) Rotation detector
JPH01174977A (en) Operation detector
JPH04186913A (en) Edge detecting circuit
JPS5542333A (en) Tape stop signal detector
JPH0364119A (en) Clock interruption detection circuit
JPH01174980A (en) Direction detector
JPH04124929A (en) Clock interruption detection circuit
JPS61292567A (en) Speed detector
JPS61294667A (en) Synchronous field detecting circuit
JPH0297122A (en) Pll circuit
JPH01174978A (en) Direction detector
JPS62281513A (en) Delay circuit
JPS63281062A (en) Frequency discriminating circuit
JPH01174974A (en) Operation detector
JPS63223521A (en) Phase discriminating circuit
JPS6364425A (en) Digital pll circuit
JPH04184517A (en) Clock abnormality detection circuit
JPS5523677A (en) Selection circuit for delay time