US4584679A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tack-on acknowledgement in computer networks
Assignee: Raytheon Co
•
Filing: 1985-06-21
•
Granted: 1986-04-22
•
Expires: 2005-06-21
Abstract
Abstract A method of communicating is disclosed in which the receiving device acknowledges the receipt of a valid transmission and awaits the receipt of an abort message from the transmitting device before accepting the transmitted data. The transmitting device awaits the receipt of a valid acknowledgement and, if it fails to receive such an acknowledgement within a predetermined time-period, transmits an abort message to the receiving device. In multinodal, peer network communication systems, the acknowledgement and abort message may be transmitted during brief, dedicated time-periods following the transmission of data.
Inventors
- 👤 William D. Livingston
- 👤 Eugene E. Jacob
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:25
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/07; G06F11/0703; G06F11/0751; G06F11/0754; G06F11/0757; G06F13/00; G06F13/14; G06F13/36; G06F13/368; G06F13/372; G06F13/38; G06F13/42; G06F13/4204; G06F13/4208; G06F13/4213; H; H04; H04L; H04L12/00; H04L12/28; H04L12/40; H04L12/407; H04L12/413
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
80 words
An apparatus for communicating data, comprising: (a) means for transmitting data; (b) means for receiving and storing without acceptance the transmitted data; (c) means for evaluating the stored data for validity; (d) means for acknowledging receipt of the data if evaluated to be valid; (e) means for transmitting an abort message when no valid acknowledgement is received within a first, predetermined time period; and (f) means for accepting the stored data if not aborted within a second, predetermined time period.
Claim 2
Independent Claim
80 words
An apparatus for communicating data, comprising: (a) means for transmitting data; (b) means for receiving and storing without acceptance the transmitted data; (c) means for evaluating the stored data for validity; (d) means for acknowledging receipt of the data if evaluated to be valid; (e) means for transmitting an abort message when no valid acknowledgement is received within a first, predetermined time period; and (f) means for accepting the stored data if not aborted within a second, predetermined time period.
Claim 3
Independent Claim
143 words
An apparatus for communicating data packets over a transmission medium between a first device and a second device, comprising: (a) means for transmitting a data packet at the first device; (b) means for receiving and storing without acceptance the transmitted data packet at the second device; (c) evaluating the validity of the format and content of the stored data packet at the second device; (d) means for acknowledging receipt of the stored data packet if evaluated to be valid at the second device; (e) means for transmitting an abort message at the first device if no valid acknowledgement from the second device is received within a first predetermined time period; and (f) means for accepting the stored valid data packet at the second device in the absence of receipt of an abort message from the first device within a second predetermined time period.
Claim 4
Independent Claim
143 words
An apparatus for communicating data packets over a transmission medium between a first device and a second device, comprising: (a) means for transmitting a data packet at the first device; (b) means for receiving and storing without acceptance the transmitted data packet at the second device; (c) evaluating the validity of the format and content of the stored data packet at the second device; (d) means for acknowledging receipt of the stored data packet if evaluated to be valid at the second device; (e) means for transmitting an abort message at the first device if no valid acknowledgement from the second device is received within a first predetermined time period; and (f) means for accepting the stored valid data packet at the second device in the absence of receipt of an abort message from the first device within a second predetermined time period.
Claim 5
Dependent Claim
48 words
The apparatus of claim 2 wherein the acknowledging and the transmitting of an abort message are performed during dedicated time period of a length which is brief relative to the length of the data packet and which proximately follow the end of the transmission of the data packet.
Claim 6
Dependent Claim
30 words
The apparatus of claim 2 wherein the acknowledging and the transmitting of an abort message are automatically suppressed by a data packet addressed to be received simultaneously by a device.
References Cited (Backward Citations)
US3001018A
Cited
DE2258623A1
Cited
US3754211A
Cited
US4074232A
Cited
JPS5439504A
Cited
JPS54142903A
Cited
US4281380A
Cited
US4410983A
Cited
US4445214A
Cited
US4342995A
Cited
JPS57106259A
Cited
US4423414A
Cited
US4332027A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-21 | 1989-10-21 | 1990-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-21 | 1993-10-21 | 1994-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-21 | 1997-10-21 | 1998-04-22 | $7700.00 | Window Closed / Lapsed |