US3594764A
Expired / Lapsed
US
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Analog converter and translator network therefor
Assignee: Halliburton Nus Corp
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Filing: 1968-06-27
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Granted: 1971-07-20
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Expires: 1988-06-27
Abstract
Abstract A telemetry system for transmitting and monitoring analog data from a remote station to a receiving station with transducer means in the form of an encoder to convert the analog signal into digital intelligence in the form of a coded signal to be transmitted over the telemetry system, preferrably over the standard switched telephone network through, for example, the application of the data phone system of the American Telephone and Telegraph Company, the intelligence being transmitted over the data phone system through the use of coded tones produced by multifrequency oscillators. A decoding network is provided at the receiving station to receive the transmitted coded signal and convert the coded signal into a signal indicative of the original analog signal. The telemetry system receives at its input and reproduces at its output, contact indication combinations selected from a plurality of groups of possible contact indications wherein each indication represents a different analog data character or value and no more than one contact indication is normally permitted within each group for any one possible combination. Each contact indication represents a different analog value and each group of contact indications represents a different arithmetic progression of the analog values wherein the first term of each successive progression equals the last term of the preceding progression plus the common difference of the preceding progression and wherein the common difference of each successive progression is equal to its first term. The contact indications are additive for each given possible combination to provide a digital code representative of an arithmetic progression of terms corresponding to the range of analog data values to be transmitted.
Inventors
- 👤 Matthew John Walsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:48
CPC Classifications
H; H04; H04M; H04M11/00; H04M11/002; H03; H03M; H03M1/00; H03M1/12; H03M1/22; H03M1/24; H03M1/28; H03M1/30; H03M1/308; H03M1/1205; H03M1/123
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
331 words
An analog converter to convert analog signals into coded combinations of contact closures for initiation of corresponding telemetry signals, a coded pattern member having a plurality of parallel tracks, each track having a series of areas extending therealong which are alternately on and off to a selected type of energy to be supplied thereto, sensing means having a series of sensing elements simultaneously movable as a unit relative to said first member in proportional response to a phenomenon to be measured and positioned such that each track has one numbers scribed element for movement therealong over said areas to independently sense the on or off condition of said energy in each respective track and accordingly make a contact closure in response to the sensing of a preselected one of said conditions, said tracks divided into a plurality of groups and each of said groups having its on and off areas for each track arranged with respect to those in each other rack in the same group such that no more than one of said contact closures is permitted within each group at the same time, said on and off areas being further arranged with respect to each other and said sensing elements by the formula of conditions wherein each of said tracks and accordingly its respective contact closure is ascribed a different natural number in such a manner that said groups are accordingly ascribed as successive series of arithmetic progressions of natural numbers wherein the first term of each successive group progression equals the last term of the preceding group progression plus the common difference of said preceding progression and wherein the common difference of each successive group progression is equal to its first term and the addition of the natural numbers scribed to any contact closures made simultaneously at each possible predetermined different increment of relative position between said member and said elements provides an arithmetic progression of natural numbers corresponding to the range of analog values to be converted.
Claim 2
Dependent Claim
331 words
An analog converter to convert analog signals into coded combinations of contact closures for initiation of corresponding telemetry signals, a coded pattern member having a plurality of parallel tracks, each track having a series of areas extending therealong which are alternately on and off to a selected type of energy to be supplied thereto, sensing means having a series of sensing elements simultaneously movable as a unit relative to said first member in proportional response to a phenomenon to be measured and positioned such that each track has one numbers scribed element for movement therealong over said areas to independently sense the on or off condition of said energy in each respective track and accordingly make a contact closure in response to the sensing of a preselected one of said conditions, said tracks divided into a plurality of groups and each of said groups having its on and off areas for each track arranged with respect to those in each other rack in the same group such that no more than one of said contact closures is permitted within each group at the same time, said on and off areas being further arranged with respect to each other and said sensing elements by the formula of conditions wherein each of said tracks and accordingly its respective contact closure is ascribed a different natural number in such a manner that said groups are accordingly ascribed as successive series of arithmetic progressions of natural numbers wherein the first term of each successive group progression equals the last term of the preceding group progression plus the common difference of said preceding progression and wherein the common difference of each successive group progression is equal to its first term and the addition of the natural numbers scribed to any contact closures made simultaneously at each possible predetermined different increment of relative position between said member and said elements provides an arithmetic progression of natural numbers corresponding to the range of analog values to be converted.
Claim 3
Dependent Claim
22 words
The analog converter of claim 1 characterized by means to produce a different telemetry signal for each respective different corresponding contact closure.
Claim 4
Dependent Claim
55 words
The analog converter of claim 2 characterized by a translator network for conversion of said different coded telemetry signals into corresponding analog signals, comprising switch means responsive with the reception of said coded signals to provide voltage drops across a load resistance, the sum of which is representative of the original converted analog signal valve.
Claim 5
Dependent Claim
33 words
The analog converter of claim 1 wherein the number of said groups is selected to equal the number of channels available for transmission on a transmission system to be employed with said converter.
Claim 6
Dependent Claim
52 words
The analog converter of claim 1 characterized in that said tracks are annular and concentric with tracks of the same group lying adjacent each other, said groups being concentrically and sequentially arranged according to their respective ascribed common difference with the group of the highest common difference positioned closest to the center.
Claim 7
Dependent Claim
26 words
The analog converter of claiM 1 characterized by three of said groups wherein their ascribed arithmetic progressions have common differences of one, five and 20 respectively.
Claim 8
Dependent Claim
45 words
The analog converter of claim 3 characterized in that said switch means is operable to selectively connect and disconnect resistances of preselected value in series with each other and said load resistance, and power supply means connected with said resistances to provide voltage drops thereacross.
Claim 9
Dependent Claim
45 words
The analog converter of claim 3 characterized in that said switch means is operable to selectively connect and disconnect resistances of preselected value in parallel with each other and said load resistance, and power supply means connected with said resistances to provide voltage drops thereacross.
Claim 10
Dependent Claim
181 words
An analog-to-digital encoder for the conversion of analog signals in the form of angular shaft displacement into representative combinations of contact closures for initiation of corresponding telemetry signals comprising a disc having a preselected pattern of nonconductive and electrically connected conductive segments positioned in eleven annular tracks thereon, said segments defined by annular concentric circles and concentric radii providing 100 discrete positions of angular displacement, each of said tracks having a brush contact mounted for relative movement therealong to produce combinations of contact closures with said conductive segments indicative of the corresponding angular displacement of said disc to produce corresponding telemetry signals, said tracks divided into three groups with said conductive and nonconductive segments arranged such that no more than one contact closure is permitted in each group for each given discrete position of angular displacement, said segments being further arranged according to the conditions that each contact is ascribed with a different integer and said ascribed integers when added for each of said discrete positions provide an arithmetic progression of integers 0 through 99 with a common difference of one.
Claim 11
Dependent Claim
181 words
An analog-to-digital encoder for the conversion of analog signals in the form of angular shaft displacement into representative combinations of contact closures for initiation of corresponding telemetry signals comprising a disc having a preselected pattern of nonconductive and electrically connected conductive segments positioned in eleven annular tracks thereon, said segments defined by annular concentric circles and concentric radii providing 100 discrete positions of angular displacement, each of said tracks having a brush contact mounted for relative movement therealong to produce combinations of contact closures with said conductive segments indicative of the corresponding angular displacement of said disc to produce corresponding telemetry signals, said tracks divided into three groups with said conductive and nonconductive segments arranged such that no more than one contact closure is permitted in each group for each given discrete position of angular displacement, said segments being further arranged according to the conditions that each contact is ascribed with a different integer and said ascribed integers when added for each of said discrete positions provide an arithmetic progression of integers 0 through 99 with a common difference of one.
References Cited (Backward Citations)
US3246316A
Cited
US3487400A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |