GB841204A - Apparatus for producing discrete pulses - Google Patents

Apparatus for producing discrete pulses

Info

Publication number
GB841204A
GB841204A GB31480/56A GB3148056A GB841204A GB 841204 A GB841204 A GB 841204A GB 31480/56 A GB31480/56 A GB 31480/56A GB 3148056 A GB3148056 A GB 3148056A GB 841204 A GB841204 A GB 841204A
Authority
GB
United Kingdom
Prior art keywords
output
pulses
positive
circuit
waveform
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
GB31480/56A
Other languages
English (en)
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB841204A publication Critical patent/GB841204A/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
    • G11B20/14—Digital recording or reproducing using self-clocking codes
    • G11B20/1403—Digital recording or reproducing using self-clocking codes characterised by the use of two levels
    • G11B20/1407—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol
    • G11B20/1419—Digital recording or reproducing using self-clocking codes characterised by the use of two levels code representation depending on a single bit, i.e. where a one is always represented by a first code symbol while a zero is always represented by a second code symbol to or from biphase level coding, i.e. to or from codes where a one is coded as a transition from a high to a low level during the middle of a bit cell and a zero is encoded as a transition from a low to a high level during the middle of a bit cell or vice versa, e.g. split phase code, Manchester code conversion to or from biphase space or mark coding, i.e. to or from codes where there is a transition at the beginning of every bit cell and a one has no second transition and a zero has a second transition one half of a bit period later or vice versa, e.g. double frequency code, FM code

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Digital Magnetic Recording (AREA)
GB31480/56A 1955-10-17 1956-10-16 Apparatus for producing discrete pulses Expired GB841204A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US540753A US3007143A (en) 1955-10-17 1955-10-17 Apparatus for reading stored information from overlapping recorded pulses

Publications (1)

Publication Number Publication Date
GB841204A true GB841204A (en) 1960-07-13

Family

ID=24156796

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31480/56A Expired GB841204A (en) 1955-10-17 1956-10-16 Apparatus for producing discrete pulses

Country Status (5)

Country Link
US (1) US3007143A (en:Method)
DE (1) DE1060633B (en:Method)
FR (1) FR1173916A (en:Method)
GB (1) GB841204A (en:Method)
NL (2) NL211269A (en:Method)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3200263A (en) * 1962-04-26 1965-08-10 Potter Instrument Co Inc Nrz signal detector
US3249763A (en) * 1962-04-27 1966-05-03 Ibm Clock signal generator
GB1508780A (en) * 1974-12-18 1978-04-26 Plessey Co Ltd Circuit for generating synchronisation signals
MX388675B (es) 2017-05-05 2025-03-20 Hubbell Lighting Inc Luminaria de montaje alto de gran luminosidad

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2470722A (en) * 1949-02-15 1949-05-17 Rca Corp Electronic synchronous signal regenerator
US2700149A (en) * 1952-11-18 1955-01-18 Jr Joseph J Stone Polarity selector
NL176456B (nl) * 1953-02-27 Halcon Res & Dev Werkwijze voor de zuivering van waterige ethyleenoxyde-oplossingen.
NL186884B (nl) * 1953-04-20 Nippon Musical Instruments Mfg Elektronisch muziekinstrument.
US2764463A (en) * 1953-05-26 1956-09-25 Underwood Corp Magnetic recording system
US2804605A (en) * 1954-03-19 1957-08-27 Raytheon Mfg Co Magnetic recording playback circuits
US2797401A (en) * 1954-05-20 1957-06-25 Hughes Aircraft Co Electronic timing pulse generator
US2896192A (en) * 1954-08-09 1959-07-21 Lab For Electronics Inc Data processing apparatus
US2890410A (en) * 1955-06-27 1959-06-09 Gen Electric Impulse testing

Also Published As

Publication number Publication date
FR1173916A (fr) 1959-03-04
US3007143A (en) 1961-10-31
DE1060633B (de) 1959-07-02
NL211269A (en:Method)
NL130689C (en:Method)

Similar Documents

Publication Publication Date Title
US2990516A (en) Pulse-width modulated amplifier and method
GB797941A (en) Apparatus for the storage of digital information
JPH0533852B2 (en:Method)
US2583983A (en) Frequency modulated magnetic recording and reproducing
US2822533A (en) Device for reading magnetically recorded memory elements
US2521623A (en) Magnetic recording and reproducing
US2768243A (en) Magnetic sound reproducer
US2853357A (en) Pulse packing system for magnetic recording of binary coded information
US2855464A (en) Electromagnetic head
US2900215A (en) Transistor record driver
GB841204A (en) Apparatus for producing discrete pulses
US2579542A (en) Pulse transformer circuit
US2289564A (en) Phase modulating system
GB684626A (en) Improvements in or relating to electric amplifier arrangements of the kind which includes a magnetic amplifier
US3319013A (en) Apparatus for recording high frequency signals on magnetic tape
GB820957A (en) Improvements in or relating to analogue computing apparatus
US2440320A (en) Modulation system
GB888692A (en) Improvements in and relating to apparatus for sensing information on a storage medium
GB851520A (en) Improvements in or relating to magnetic reading and recording
GB1064890A (en) Magnetic transducer head
GB753255A (en) Improvements in or relating to magnetic or dielectric amplifiers
US2485539A (en) Magnetic sound recorder utilizing varying cathode currents
GB778012A (en) Improvements in transistor pulse amplifier circuits
GB762313A (en) Information writing system for electrostatic storage tubes
GB782737A (en) Magnetic modulator