US3573807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital encoder apparatus
Assignee: Unisys Corp
•
Filing: 1969-07-30
•
Granted: 1971-04-06
•
Expires: 1989-07-30
Abstract
Abstract A matrix of switches is arranged in columns and rows with separate column and row conductors coupling, in parallel, all the switches of the respectively associated column and row. A closed switch selects one column conductor and one row conductor, the opposite ends of each of which are serially coupled to a number of input windings that are associated with a like number of transformers. Each transformer is assigned a respectively associated binary value whereby the closing of a switch concurrently induces in the associated output windings output signals that are representative of the associated binary value.
Inventors
- 👤 George T Osborne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:52
CPC Classifications
H; H03; H03M; H03M11/00; H03M11/22; H03M7/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
178 words
Encoder apparatus, comprising: a plurality of switching means arranged in rows and columns; a plurality of row conductors, each parallel coupling only the switching means of an associated row; a plurality of column conductors, each parallel coupling only the switching means of an associated column; a plurality of row transformers, each having a single output winding and at least one input winding; a plurality of column transformers, each having a single output winding and at least one input winding; means separately coupling each of the row conductors to only one input winding of selected ones of said row transformers; means separately coupling each of the column conductors to only one input winding of selected ones of said column transformers; means for causing a current signal to flow through the selected row conductor, column conductor combination when one of said switching means is closed; and said selected row-conductor, column-conductor combination inducing output signals in the output windings of the selected row transformers and column transformers, said output signals representative of a multibit word associated with the closed switching means.
Claim 2
Dependent Claim
178 words
Encoder apparatus, comprising: a plurality of switching means arranged in rows and columns; a plurality of row conductors, each parallel coupling only the switching means of an associated row; a plurality of column conductors, each parallel coupling only the switching means of an associated column; a plurality of row transformers, each having a single output winding and at least one input winding; a plurality of column transformers, each having a single output winding and at least one input winding; means separately coupling each of the row conductors to only one input winding of selected ones of said row transformers; means separately coupling each of the column conductors to only one input winding of selected ones of said column transformers; means for causing a current signal to flow through the selected row conductor, column conductor combination when one of said switching means is closed; and said selected row-conductor, column-conductor combination inducing output signals in the output windings of the selected row transformers and column transformers, said output signals representative of a multibit word associated with the closed switching means.
Claim 3
Dependent Claim
178 words
Encoder apparatus, comprising: 22n switching means arranged in 2n rows and 2n columns; 2n row conductors each parallel coupling only the switching means of an associated row; 2n column conductors each parallel coupling only the switching means of an associated column; n row transformers, each having a single output winding and 20, 21, ... 2n 1 input windings, respectively; n column transformers, each having a single output winding and 20, 21, ... 2n 1 input windings, respectively; means separately serially coupling each of the 2n row conductors to only one input winding of selected ones of said row transformers; means separately coupling each of the 2n column conductors to only one input winding of selected ones of said column transformers; means for causing a current signal to flow through the selected row-conductor, column-conductor combination when one of said switching means is closed; and said selected row-conductor, column-conductor combination inducing output signals in the output windings of the selected row transformers and column transformers, said output signals representative of a 2n bit word associated with the closed switching means.
Claim 4
Dependent Claim
178 words
Encoder apparatus, comprising: 22n switching means arranged in 2n rows and 2n columns; 2n row conductors each parallel coupling only the switching means of an associated row; 2n column conductors each parallel coupling only the switching means of an associated column; n row transformers, each having a single output winding and 20, 21, ... 2n 1 input windings, respectively; n column transformers, each having a single output winding and 20, 21, ... 2n 1 input windings, respectively; means separately serially coupling each of the 2n row conductors to only one input winding of selected ones of said row transformers; means separately coupling each of the 2n column conductors to only one input winding of selected ones of said column transformers; means for causing a current signal to flow through the selected row-conductor, column-conductor combination when one of said switching means is closed; and said selected row-conductor, column-conductor combination inducing output signals in the output windings of the selected row transformers and column transformers, said output signals representative of a 2n bit word associated with the closed switching means.
Claim 5
Dependent Claim
227 words
Encoder apparatus, comprising: 22n switching means arranged in 2n rows and 2n columns; 2n row conductors, each parallel coupling only the switching means of an associated row; 2n column conductors, each parallel coupling only the switching means of an associated column; n 0 row transformers, each having a single output winding and 20, 21, ... 2n 1 input windings, respectively; n 1 row transformers, each having a single output winding and 20, 21, ... 2n 1 input windings, respectively; n 0 column transformers, each having a single output winding and 20, 21, ... 2n 1 input windings, respectively; n 1 column transformers, each having a single output winding and 20, 21, ... 2n 1 input windings, respectively; means separately serially coupling each of the 2n row conductors to only one input winding of n alternative ones of said 0 or 1 row transformers; means separately serially coupling each of the 2n column conductors to only one input winding of n alternative ones of said 0 or 1 column transformers; means for causing a current signal to flow through the selected row-conductor, column-conductor combination when one of said switching means is closed; and said selected row-conductor, column-conductor combination inducing output signals in the output windings of the selected row transformers and column transformers, said output signal representative of a 2n bit word associated with the closed switching means.
Claim 6
Dependent Claim
227 words
Encoder apparatus, comprising: 22n switching means arranged in 2n rows and 2n columns; 2n row conductors, each parallel coupling only the switching means of an associated row; 2n column conductors, each parallel coupling only the switching means of an associated column; n 0 row transformers, each having a single output winding and 20, 21, ... 2n 1 input windings, respectively; n 1 row transformers, each having a single output winding and 20, 21, ... 2n 1 input windings, respectively; n 0 column transformers, each having a single output winding and 20, 21, ... 2n 1 input windings, respectively; n 1 column transformers, each having a single output winding and 20, 21, ... 2n 1 input windings, respectively; means separately serially coupling each of the 2n row conductors to only one input winding of n alternative ones of said 0 or 1 row transformers; means separately serially coupling each of the 2n column conductors to only one input winding of n alternative ones of said 0 or 1 column transformers; means for causing a current signal to flow through the selected row-conductor, column-conductor combination when one of said switching means is closed; and said selected row-conductor, column-conductor combination inducing output signals in the output windings of the selected row transformers and column transformers, said output signal representative of a 2n bit word associated with the closed switching means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-05 | 1974-10-05 | 1975-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-05 | 1978-10-05 | 1979-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-05 | 1982-10-05 | 1983-04-06 | $7700.00 | Window Closed / Lapsed |