US3673338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bi-directional translator circuit
Assignee: Individual
•
Filing: 1969-08-01
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Granted: 1972-06-27
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Expires: 1989-08-01
Abstract
Abstract A bi-directional relay translator is provided which responds to a local call for translating the equipment number of a calling line to the directory number of that line and which responds to a terminating call for translating the directory number of the called line to the equipment number of that line. The translation of an outgoing call is initiated by operation of the calling line relay which provides an equipment number identification, following which a translation to decimal directory number is effected. In the reverse direction, when a directory number is registered, completion of the registration initiates a translation of the decimal directory number to an equipment number.
Inventors
- 👤 Evert Oskar Ekbergh
- 👤 Per Gustaf Jonsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:58
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/0004
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
202 words
In a telephone exchange, a bi-directional registration and translation network comprising: a first plural digit register responsive to the initiation of a call from a line in said exchange for marking a lead of a first plurality of leads to register an indication representative of the equipment location number of said calling line, signalling means responsive to the completion of a registration of the full calling line equipment location number for initiating registration of the multi-digit directory number representative of a calling line, a second plural digit register responsive to said initiating signal from said signalling means for effecting the serial translation of the equipment location number representative of said calling line to the directory number representative of said calling line and for storing said translated number, means for accessing the second register to indicate the directory number representative of a called line for registration thereof and mark a representative one of a second plurality of leads, and means responsive to the completion of said last mentioned registration for initiating the serial translation of said registration on said first register indicative of the equipment location number of said called line, whereby to mark the representative one of said first plurality of leads.
Claim 2
Dependent Claim
202 words
In a telephone exchange, a bi-directional registration and translation network comprising: a first plural digit register responsive to the initiation of a call from a line in said exchange for marking a lead of a first plurality of leads to register an indication representative of the equipment location number of said calling line, signalling means responsive to the completion of a registration of the full calling line equipment location number for initiating registration of the multi-digit directory number representative of a calling line, a second plural digit register responsive to said initiating signal from said signalling means for effecting the serial translation of the equipment location number representative of said calling line to the directory number representative of said calling line and for storing said translated number, means for accessing the second register to indicate the directory number representative of a called line for registration thereof and mark a representative one of a second plurality of leads, and means responsive to the completion of said last mentioned registration for initiating the serial translation of said registration on said first register indicative of the equipment location number of said called line, whereby to mark the representative one of said first plurality of leads.
Claim 3
Dependent Claim
59 words
A network according to claim 1, in which the leads of said second plurality intended for the subscriber directory numbers are more numerous than the leads of said first plurality for the subscriber equipment numbers, whereby necessary alternations of subscriber directory numbers are enabled by connecting the corresponding leads for equipment numbers to non-occupied leads for subscriber directory numbers.
Claim 4
Dependent Claim
94 words
A network as claimed in claim 1, in which said first and second plural digit registers each comprise groups of electromechanical relays, each group representing a digit of a number, and in which the relays forming said first register are so arranged that, when initiating call conditions are simultaneously received from two or more lines, a combination of relays in one of said registers identifies which ones of said lines are calling, which identification also performs the selection of which one of said calling lines is to be accorded access to said one register.
Claim 5
Dependent Claim
35 words
A network as claimed in claim 3, wherein said last mentioned initiating means comprises a parity check means serially operated through relays representative of each digit of said directory number representative of the called line.
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |