GB935752A - Improvements in or relating to variable time delay apparatus - Google Patents

Improvements in or relating to variable time delay apparatus

Info

Publication number
GB935752A
GB935752A GB4024358A GB4024358A GB935752A GB 935752 A GB935752 A GB 935752A GB 4024358 A GB4024358 A GB 4024358A GB 4024358 A GB4024358 A GB 4024358A GB 935752 A GB935752 A GB 935752A
Authority
GB
United Kingdom
Prior art keywords
time delay
speed
varying
record
record medium
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.)
Expired
Application number
GB4024358A
Inventor
Charles Stanfield Rutherf Dain
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB4024358A priority Critical patent/GB935752A/en
Publication of GB935752A publication Critical patent/GB935752A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Digital Magnetic Recording (AREA)

Abstract

935,752. Magnetic recording &c. apparatus. ELECTRIC & MUSICAL INDUSTRIES Ltd. Dec. 10, 1959 [Dec. 13, 1958], No. 40243/58. Class 40 (2). [Also in Group XXXIX] A time delay is produced by having spaced record and playback heads 4 and 5 on a moving record medium 1 the time delay being variable by varying the spacing between the heads 4 and 5 and by varying the speed of the record medium. A coarse control of the time delay is made by selecting one or other of a number of playback heads 5 by means of a switch arm 6 controlled by a solenoid 7. Fine control is made by varying the speed of the record medium as by using a capstan roller 2 driven by an electric motor 9 the speed of which is governed by an input voltage at 10 applied to the motor by way of an amplifier 11. To maintain constant the pitch of the output signals as the speed of the record is varied, the signals may be recorded as phase or pulse-modulations. The tape may be a closed loop and be provided with an erase head. Recording may be made on a rotating disc or drum. More than one recording track may be employed.
GB4024358A 1958-12-13 1958-12-13 Improvements in or relating to variable time delay apparatus Expired GB935752A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4024358A GB935752A (en) 1958-12-13 1958-12-13 Improvements in or relating to variable time delay apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4024358A GB935752A (en) 1958-12-13 1958-12-13 Improvements in or relating to variable time delay apparatus

Publications (1)

Publication Number Publication Date
GB935752A true GB935752A (en) 1963-09-04

Family

ID=10413926

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4024358A Expired GB935752A (en) 1958-12-13 1958-12-13 Improvements in or relating to variable time delay apparatus

Country Status (1)

Country Link
GB (1) GB935752A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4931320U (en) * 1972-06-19 1974-03-18
JPS4967601U (en) * 1972-09-22 1974-06-13
FR2537746A1 (en) * 1982-12-09 1984-06-15 Magnetic Peripherals Inc LU SIGNAL RECONSTRUCTION APPARATUS AND VARIABLE DELAY APPLICATION APPARATUS USED THEREIN
GB2256776A (en) * 1991-05-11 1992-12-16 Motorola Ltd Remote basestation diagnostic subsystem loopback facility
WO2011126513A1 (en) * 2010-04-09 2011-10-13 Endless Analog, Inc. Closed loop analog signal processor ("clasp") system
US9070408B2 (en) 2005-08-26 2015-06-30 Endless Analog, Inc Closed loop analog signal processor (“CLASP”) system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4931320U (en) * 1972-06-19 1974-03-18
JPS4967601U (en) * 1972-09-22 1974-06-13
FR2537746A1 (en) * 1982-12-09 1984-06-15 Magnetic Peripherals Inc LU SIGNAL RECONSTRUCTION APPARATUS AND VARIABLE DELAY APPLICATION APPARATUS USED THEREIN
GB2256776A (en) * 1991-05-11 1992-12-16 Motorola Ltd Remote basestation diagnostic subsystem loopback facility
GB2256776B (en) * 1991-05-11 1995-08-23 Motorola Ltd Maintenance terminal unit loopback facility
US8630727B2 (en) 2005-08-26 2014-01-14 Endless Analog, Inc Closed loop analog signal processor (“CLASP”) system
US9070408B2 (en) 2005-08-26 2015-06-30 Endless Analog, Inc Closed loop analog signal processor (“CLASP”) system
WO2011126513A1 (en) * 2010-04-09 2011-10-13 Endless Analog, Inc. Closed loop analog signal processor ("clasp") system

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