GB1192734A - Analogue to Digital Converter - Google Patents

Analogue to Digital Converter

Info

Publication number
GB1192734A
GB1192734A GB4106566A GB4106566A GB1192734A GB 1192734 A GB1192734 A GB 1192734A GB 4106566 A GB4106566 A GB 4106566A GB 4106566 A GB4106566 A GB 4106566A GB 1192734 A GB1192734 A GB 1192734A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
conductor
voltage
stepping switch
signal
resistors
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
GB4106566A
Inventor
Graham Bruce Kent
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.)
SCIENT SYSTEMS Ltd
SCIENTIFIC SYSTEMS Ltd
Original Assignee
SCIENT SYSTEMS Ltd
SCIENTIFIC SYSTEMS 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

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04MTELEPHONIC COMMUNICATION
    • H04M11/00Telephonic communication systems adapted for combination with other electrical systems
    • H04M11/002Telephonic communication systems adapted for combination with other electrical systems with telemetering systems
    • H04M11/005Telephonic communication systems adapted for combination with other electrical systems with telemetering systems using recorded signals, e.g. speech
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00Analogue/digital conversion; Digital/analogue conversion
    • HELECTRICITY
    • H03BASIC ELECTRONIC CIRCUITRY
    • H03MCODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12Analogue/digital converters
    • H03M1/1205Multiplexed conversion systems

Abstract

1,192,734. A/D converters. SCIENTIFIC SYSTEMS Ltd. 27 Dec., 1967 [1 Oct., 1966], No. 41065/66. Heading G4H. An analogue digital converter includes a stepping switch SS1 (Fig. 2) which as it is stepped feeds a staircase voltage signal on conductor 13 (Fig. 1) to a comparator 12 for comparison with an input voltage on conductor 11, an output pulse being transmitted to, for example, automatic dialling equipment or an indicator for each step at which the staircase signal is less than the input signal. In the embodiment described the stepping switch SS1 (Fig. 2) is connected across resistors 22 and a further stepping switch SS2, connected across the same resistors, follows the first switch until the voltage on conductor 13 is greater than that on conductor 11, the second stepping switch SS2 then remaining on the next lower step. A further stepping switch SS3 across resistors 23 connected between conductors 13 14 is then stepped, pulses being transmitted for each step by a tone generator 33 until the voltage on conductor 15 exceeds the voltage on conductor 11. The two series of pulse trains, each representing one decade of the digitized signal, are preferably audio pulses of two different frequencies but different amplitude or duration pulses may be used for the different decades. The apparatus may be used for measuring liquid level, the potential on conductor 11 being taken from a potentiometer 10.
GB4106566A 1966-10-01 1966-10-01 Analogue to Digital Converter Expired GB1192734A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4106566A GB1192734A (en) 1966-10-01 1966-10-01 Analogue to Digital Converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4106566A GB1192734A (en) 1966-10-01 1966-10-01 Analogue to Digital Converter

Publications (1)

Publication Number Publication Date
GB1192734A true true GB1192734A (en) 1970-05-20

Family

ID=10417962

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4106566A Expired GB1192734A (en) 1966-10-01 1966-10-01 Analogue to Digital Converter

Country Status (1)

Country Link
GB (1) GB1192734A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0047090A2 (en) * 1980-09-01 1982-03-10 South Eastern Electricity Board Method of and apparatus for converting an analogue voltage to a digital representation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0047090A2 (en) * 1980-09-01 1982-03-10 South Eastern Electricity Board Method of and apparatus for converting an analogue voltage to a digital representation
EP0047090A3 (en) * 1980-09-01 1982-09-22 South Eastern Electricity Board Method of and apparatus for converting an analogue voltage to a digital representation

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees