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US4413336A
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US
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Process for transmitting data with the aid of a start-stop signal
Assignee: Siemens AG
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Filing: 1980-11-24
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Granted: 1983-11-01
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Expires: 2000-11-24
Abstract
Abstract A process for the transmission of data from a plurality of data sources utilizes a start-stop signal whose signal frame contains one code bit and data bits from a plurality of data sources between a start bit and a stop bit. Here, the code bits indicate the assignment of the data bits to the individual data sources.
Inventors
- 👤 Charles Chaillie
- 👤 Konrad Reisinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:36
CPC Classifications
H; H04; H04J; H04J3/00; H04J3/24
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
174 words
A process for transmitting data from a plurality of groups of data sources as a time-division multiplex signal which is divided into time-division multiplex frame each encompassing a plurality of character frames, comprising the steps of: forming a respective character frame for each group of data sources by transmitting a frame start bit, transmitting at least one frame stop bit time-spaced from the frame start bit by a plurality of bit positions, transmitting data bits from respective data sources of a group in some of the bit positions between the frame start bit and the frame stop bit, and transmitting a code bit in a bit position between the start and stop bits to identify, with a plurality of successive code bits which is smaller in number than the number of character frames of a time-division multiplex frames, the individual character frames and the assignment of the data bits from the data sources to the respective bit locations of the character frame; and forming the time-division multiplex frame by sequentially transmitting the character frames.
Claim 2
Dependent Claim
174 words
A process for transmitting data from a plurality of groups of data sources as a time-division multiplex signal which is divided into time-division multiplex frame each encompassing a plurality of character frames, comprising the steps of: forming a respective character frame for each group of data sources by transmitting a frame start bit, transmitting at least one frame stop bit time-spaced from the frame start bit by a plurality of bit positions, transmitting data bits from respective data sources of a group in some of the bit positions between the frame start bit and the frame stop bit, and transmitting a code bit in a bit position between the start and stop bits to identify, with a plurality of successive code bits which is smaller in number than the number of character frames of a time-division multiplex frames, the individual character frames and the assignment of the data bits from the data sources to the respective bit locations of the character frame; and forming the time-division multiplex frame by sequentially transmitting the character frames.
Claim 3
Dependent Claim
52 words
The process of claim 1, and further defined, for a seven bit character frame, as: transmitting the start and stop bits in the first and seventh bit positions, respectively; transmitting the code bit in one of the bit positions two through six; and transmitting data bits in the four remaining bit positions.
Claim 4
Dependent Claim
47 words
The process of claim 1, and further defined as: producing a periodically recurring sequence of 2 m code bits for indicating the assignment of the respective data bits to the respective data source, where m is the log 2 of the character frames per time-division multiplex frame.
Claim 5
Dependent Claim
58 words
The process of claim 1, and further defined for an eight bit signal frame, as: transmitting the start bit in the first bit position and two stop bits in the seventh and eighth bit positions; transmitting the code bit in one of the bit positions two through six; and transmitting data bits in the four remaining bit positions.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-31 | 1987-05-02 | 1987-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-31 | 1991-05-02 | 1991-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-31 | 1995-05-02 | 1995-11-01 | $7700.00 | Window Closed / Lapsed |