JPS55135360A - Rotation controller for turntable - Google Patents

Rotation controller for turntable

Info

Publication number
JPS55135360A
JPS55135360A JP4286979A JP4286979A JPS55135360A JP S55135360 A JPS55135360 A JP S55135360A JP 4286979 A JP4286979 A JP 4286979A JP 4286979 A JP4286979 A JP 4286979A JP S55135360 A JPS55135360 A JP S55135360A
Authority
JP
Japan
Prior art keywords
turntable
information
rotation
comparators
comparator
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
JP4286979A
Other languages
Japanese (ja)
Inventor
Hidehiko Okada
Hidemichi Shirai
Yoshimaru Maruno
Noboru Kamijo
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP4286979A priority Critical patent/JPS55135360A/en
Publication of JPS55135360A publication Critical patent/JPS55135360A/en
Pending legal-status Critical Current

Links

Landscapes

  • Automatic Tape Cassette Changers (AREA)

Abstract

PURPOSE: To control the rotation of a turntable without using any encoder, etc., by supplying position information, etc., to comparators as it is or by shifting, and by controlling the rotation according to a comparison output based upon one piece of information.
CONSTITUTION: Through switches 5W8 closed corresponding to the rotation position of a turntable, set outputs held by FF17W20 are inputted as position information to comparator 33 as they are and to comparator 34 by sequential shifting. On the other hand, information, held by FF25W28, regarding whether a cassette, etc., at a fixed position of the turntable is selected is input to comparators 33 and 34 respectively without being shifted. Then, respective comparators 33 and 34 compare one piece of input information to the other pieces of information to generate high and low levels corresponding to the coincidence and dissidence. Corresponding to those outputs, the rotation direction is assigned via a switching circuit, etc., so that the rotation of the turntable will accurately come into effect with the simple constitution without requiring any encoder, etc.
COPYRIGHT: (C)1980,JPO&Japio
JP4286979A 1979-04-09 1979-04-09 Rotation controller for turntable Pending JPS55135360A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4286979A JPS55135360A (en) 1979-04-09 1979-04-09 Rotation controller for turntable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4286979A JPS55135360A (en) 1979-04-09 1979-04-09 Rotation controller for turntable

Publications (1)

Publication Number Publication Date
JPS55135360A true JPS55135360A (en) 1980-10-22

Family

ID=12648035

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4286979A Pending JPS55135360A (en) 1979-04-09 1979-04-09 Rotation controller for turntable

Country Status (1)

Country Link
JP (1) JPS55135360A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0662963U (en) * 1993-02-08 1994-09-06 アズマ工業株式会社 Wax applicator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0662963U (en) * 1993-02-08 1994-09-06 アズマ工業株式会社 Wax applicator

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