GB1249225A - Circuit arrangement for the input and output of information - Google Patents

Circuit arrangement for the input and output of information

Info

Publication number
GB1249225A
GB1249225A GB279369A GB279369A GB1249225A GB 1249225 A GB1249225 A GB 1249225A GB 279369 A GB279369 A GB 279369A GB 279369 A GB279369 A GB 279369A GB 1249225 A GB1249225 A GB 1249225A
Authority
GB
United Kingdom
Prior art keywords
reading
writing
selecting
switching
heads
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
GB279369A
Inventor
Peter Deilmann
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.)
Zentronik VEB
Original Assignee
Zentronik VEB
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 Zentronik VEB filed Critical Zentronik VEB
Priority to GB279369A priority Critical patent/GB1249225A/en
Publication of GB1249225A publication Critical patent/GB1249225A/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
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/49—Fixed mounting or arrangements, e.g. one head per track
    • G11B5/4969—Details for track selection or addressing
    • G11B5/4992—Circuits
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/49—Fixed mounting or arrangements, e.g. one head per track
    • G11B5/4969—Details for track selection or addressing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/49—Fixed mounting or arrangements, e.g. one head per track
    • G11B5/4969—Details for track selection or addressing
    • G11B5/4976—Disposition of heads, e.g. matrix arrangement
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/004—Recording on, or reproducing or erasing from, magnetic drums

Abstract

1,249,225. Magnetic drum data stores. KOMBINAT ZENTRONIC VEB. 17 Jan., 1969, No. 2793/69. Heading G4C. [Also in Division H3] A matrix-type head-selecting arrangement, e.g. for a magnetic drum store, uses writing, reading and switching amplifiers to which selecting voltages can be applied, each switching amplifier having an input transistor controlling two transistors of opposite polarity types. In Fig. 1, for writing or clearing, one of 24 heads AWK1. . . AWK24 is selected by enabling one of 6 writing amplifiers SPV1 . . . SPV6 with a selecting voltage at Z1 . . . Z6, and one of 4 switching amplifiers SV1. . . with a selecting voltage at S1 . . . . For reading, one of the heads is selected by enabling one of 6 reading preamplifiers HV1 ... HV6 with a selecting voltage at Z1 ... Z6, and one of the 4 switching amplifiers SV1 ... as before. A final reading amplifier EV is provided for output. Fig. 2 shows a switching amplifier, in which the selecting voltage at S enables or disables a transistor T1 to disable or enable respectively both of two mutually-complementary transistors T2, T3, the emitters of which are earthed via AE and the collectors of which are connected to the relevant heads at AC. Oppositely-poled diodes D49, D50 carry current during writing and clearing/reading respectively. Application to automatic invoicing, book-keeping and accounting machines is mentioned.
GB279369A 1969-01-17 1969-01-17 Circuit arrangement for the input and output of information Expired GB1249225A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB279369A GB1249225A (en) 1969-01-17 1969-01-17 Circuit arrangement for the input and output of information

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB279369A GB1249225A (en) 1969-01-17 1969-01-17 Circuit arrangement for the input and output of information

Publications (1)

Publication Number Publication Date
GB1249225A true GB1249225A (en) 1971-10-13

Family

ID=9746022

Family Applications (1)

Application Number Title Priority Date Filing Date
GB279369A Expired GB1249225A (en) 1969-01-17 1969-01-17 Circuit arrangement for the input and output of information

Country Status (1)

Country Link
GB (1) GB1249225A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2663772A1 (en) * 1990-06-26 1991-12-27 Thomson Csf MAGNETIC RECORDING DEVICE WITH PLURALITY OF MAGNETIC HEADS.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2663772A1 (en) * 1990-06-26 1991-12-27 Thomson Csf MAGNETIC RECORDING DEVICE WITH PLURALITY OF MAGNETIC HEADS.
EP0463908A1 (en) * 1990-06-26 1992-01-02 Thomson-Csf Magnetic recording device with a plurality of magnetic heads

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