GB1449869A - Synchro data transmission apparatus - Google Patents

Synchro data transmission apparatus

Info

Publication number
GB1449869A
GB1449869A GB5507273A GB5507273A GB1449869A GB 1449869 A GB1449869 A GB 1449869A GB 5507273 A GB5507273 A GB 5507273A GB 5507273 A GB5507273 A GB 5507273A GB 1449869 A GB1449869 A GB 1449869A
Authority
GB
United Kingdom
Prior art keywords
data transmission
transmission apparatus
synchro data
synchro
transmission
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
GB5507273A
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.)
Unisys Corp
Original Assignee
Sperry Rand 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 Sperry Rand Corp filed Critical Sperry Rand Corp
Publication of GB1449869A publication Critical patent/GB1449869A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
    • H03G3/301—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
    • G01C17/02—Magnetic compasses
    • G01C17/28—Electromagnetic compasses
    • G01C17/30—Earth-inductor compasses
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
    • G01C17/38—Testing, calibrating, or compensating of compasses
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/025—Compensating stray fields
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/38—Electric signal transmission systems using dynamo-electric devices
    • G08C19/46—Electric signal transmission systems using dynamo-electric devices of which both rotor and stator carry windings
    • G08C19/48—Electric signal transmission systems using dynamo-electric devices of which both rotor and stator carry windings being the type with a three-phase stator and a rotor fed by constant-frequency AC, e.g. selsyn, magslip
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H03G1/0047—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using photo-electric elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J7/00—Multiplex systems in which the amplitudes or durations of the signals in individual channels are characteristic of those channels

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Signal Processing (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Electromagnetism (AREA)
  • Multimedia (AREA)
  • Amplifiers (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
GB5507273A 1972-12-26 1973-11-28 Synchro data transmission apparatus Expired GB1449869A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US31814472A 1972-12-26 1972-12-26

Publications (1)

Publication Number Publication Date
GB1449869A true GB1449869A (en) 1976-09-15

Family

ID=23236847

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5507273A Expired GB1449869A (en) 1972-12-26 1973-11-28 Synchro data transmission apparatus

Country Status (6)

Country Link
US (1) US3784753A (https=)
JP (1) JPS5335742B2 (https=)
DE (1) DE2362975A1 (https=)
FR (1) FR2212067A5 (https=)
GB (1) GB1449869A (https=)
IT (1) IT1000203B (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2177512A (en) * 1985-06-20 1987-01-21 Ca Minister Nat Defence Determining orientation of magnetometer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1059311A (en) * 1974-12-02 1979-07-31 James R. Erspamer Flux valve heading repeater compensation systems
JPS57125173A (en) * 1981-04-02 1982-08-04 Yoshino Kogyosho Co Ltd Unsealing mechanism

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3619511A (en) * 1969-07-17 1971-11-09 North American Rockwell Data normalizing apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2177512A (en) * 1985-06-20 1987-01-21 Ca Minister Nat Defence Determining orientation of magnetometer
US4767988A (en) * 1985-06-20 1988-08-30 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defence Precision magnetometer orientation device

Also Published As

Publication number Publication date
IT1000203B (it) 1976-03-30
JPS4991666A (https=) 1974-09-02
US3784753A (en) 1974-01-08
DE2362975A1 (de) 1974-06-27
JPS5335742B2 (https=) 1978-09-28
IT7354121A1 (it) 1975-06-06
FR2212067A5 (https=) 1974-07-19

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee