EP0039191A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Digital data transmission system with adaptive data transmission rate
Assignee: Kearney and Trecker Corp
•
Filing: 1981-04-16
•
Granted: —
•
Expires: 2001-04-16
Abstract
Abstract The data transmission rate of a digital data transmission system is automatically varied to maintain the measured error rate within predetermined limits to achieve the highest transmission rate consistent with predetermined error rate limits. The initial data transmission rate is determined by varying the data transmission rate until the measured error rate reaches the upper limit thereof and then transmitting at slightly reduced data transmission rate.
Inventors
- 👤 Edward E. Kirkham
- 👤 Richard Johnstone
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 05:19
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/24; H04L1/0001; H04L1/0002; H04Q; H04Q2213/00; H04Q2213/13166; H04Q2213/13199; H04Q2213/13332; Y; Y02; Y02D; Y02D30/00; Y02D30/50
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
76 words
A data transmission system comprising means for transmitting digital data; means for receiving digital data; a digital transmission link coupled between said transmitting means and receiving means; means for measuring the error rate in the transmission of digital data from said transmitting means to said receiving means; means for comparing the measured error rate to predetermined limits; and means for varying the data transmission rate to achieve the highest transmission rate within predetermined error rate limits.
Claim 2
Dependent Claim
76 words
A data transmission system comprising means for transmitting digital data; means for receiving digital data; a digital transmission link coupled between said transmitting means and receiving means; means for measuring the error rate in the transmission of digital data from said transmitting means to said receiving means; means for comparing the measured error rate to predetermined limits; and means for varying the data transmission rate to achieve the highest transmission rate within predetermined error rate limits.
Claim 3
Dependent Claim
61 words
A data transmission system according to claim 1 wherein said means for varying the data transmission rate includes a first variable frequency clock for said data transmitting means; means for controlling the frequency of said first variable frequency clock; a second variable frequency clock for said data receiving means; and means for controlling the frequency of said second variable frequency clock.
Claim 4
Independent Claim
67 words
A method of transmitting digital data between digital data transmitting means and digital data receiving means comprising the steps of: transmitting test messages between said transmitting and receiving means at varying data transmission rates; measuring the error rates of said test messages; and transmitting data messages between said transmitting and receiving means at a data transmission rate at which the measured error rate falls within predetermined limits.
Claim 5
Independent Claim
67 words
A method of transmitting digital data between digital data transmitting means and digital data receiving means comprising the steps of: transmitting test messages between said transmitting and receiving means at varying data transmission rates; measuring the error rates of said test messages; and transmitting data messages between said transmitting and receiving means at a data transmission rate at which the measured error rate falls within predetermined limits.
Claim 6
Independent Claim
92 words
A method of transmitting digital data between digital data transmitting means and digital data receiving means comprising the steps of: transmitting digital data messages between said transmitting and receiving means at a predetermined data transmission rate; measuring the error rate of said digital data transmission; raising the data transmission rate of said digital data transmission when the measured error rate drops to or below a predetermined lower limit; and lowering the data transmission rate of said digital data transmission when the measured error rate rises to or exceeds a predetermined upper limit.
Claim 7
Independent Claim
92 words
A method of transmitting digital data between digital data transmitting means and digital data receiving means comprising the steps of: transmitting digital data messages between said transmitting and receiving means at a predetermined data transmission rate; measuring the error rate of said digital data transmission; raising the data transmission rate of said digital data transmission when the measured error rate drops to or below a predetermined lower limit; and lowering the data transmission rate of said digital data transmission when the measured error rate rises to or exceeds a predetermined upper limit.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.