GB1179614A - V. F. Receiver - Google Patents

V. F. Receiver

Info

Publication number
GB1179614A
GB1179614A GB5459567A GB5459567A GB1179614A GB 1179614 A GB1179614 A GB 1179614A GB 5459567 A GB5459567 A GB 5459567A GB 5459567 A GB5459567 A GB 5459567A GB 1179614 A GB1179614 A GB 1179614A
Authority
GB
United Kingdom
Prior art keywords
signal
threshold
thresholds
exceeded
potential
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
GB5459567A
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 Standard Electric Corp
Original Assignee
International Standard Electric 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 Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1179614A publication Critical patent/GB1179614A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/46—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies comprising means for distinguishing between a signalling current of predetermined frequency and a complex current containing that frequency, e.g. speech current

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Circuits Of Receivers In General (AREA)
  • Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
GB5459567A 1966-12-03 1967-11-30 V. F. Receiver Expired GB1179614A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST026196 1966-12-03

Publications (1)

Publication Number Publication Date
GB1179614A true GB1179614A (en) 1970-01-28

Family

ID=7460890

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5459567A Expired GB1179614A (en) 1966-12-03 1967-11-30 V. F. Receiver

Country Status (4)

Country Link
CH (1) CH498539A (de)
DE (1) DE1512006A1 (de)
GB (1) GB1179614A (de)
NL (1) NL6716500A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4091243A (en) * 1977-07-26 1978-05-23 Bell Telephone Laboratories, Incorporated Multifrequency signal receiver

Also Published As

Publication number Publication date
DE1512006A1 (de) 1969-02-20
CH498539A (de) 1970-10-31
NL6716500A (de) 1968-06-04

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee