Patent US4021910A successfully refreshed from Google Patents.
Patent US2406477A successfully refreshed from Google Patents.
Patent US4675668A successfully refreshed from Google Patents.
US4675668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Data transmission system over building wiring
Assignee: Sharp Corp
•
Filing: 1986-01-13
•
Granted: 1987-06-23
•
Expires: 2006-01-13
Abstract
Abstract A data transmission method over building wiring includes a plurality of transmission sections. One of these sections is selected from the plurality of transmission sections to be a data transmission source machine for providing data. The data is transmitted from the data transmission source to the remaining transmission sections. If a transmission section is not selected it is used to relay the data to one of the remaining transmission sections wherein it is received by a final data transmission section. A data transmission section used in the method, comprises a data receiving part for receiving the transmitted data, a relay counter part for counting the number of relaying the transmitted data, and data relaying part for steps of relaying the-received data.
Inventors
- 👤 Masahiro Ise
- 👤 Hidehiko Tanaka
- 👤 Katsuyuki Machino
- 👤 Toshiyuki Matsubara
- 👤 Teiji Terasaka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:06
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/54; H04B3/542; H02; H02J; H02J13/00; H02J13/13; H02J13/1311; H04B2203/00; H04B2203/54; H04B2203/5404; H04B2203/5408; H04B2203/5425; H04B2203/5429; H04B2203/5458; H04B2203/5462; H04B2203/5466; H04B2203/5491; Y; Y02; Y02B; Y02B90/00; Y02B90/20; Y04; Y04S; Y04S40/00; Y04S40/12; Y04S40/121
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
256 words
A method of transmitting a data message from a selected transmitting one of a plurality of transmission sections to a selected receiving one of said transmission sections wherein each of said transmission sections is identified by a self address and said selected receiving one of said transmission sections is identified by a final data transmission address in said data message, said method comprising: (a) transmitting said data message from said selected transmitting one of said plurality of transmission sections to at least one adjacently disposed one of said plurality of transmission sections; (b) said adjacently disposed one of said plurality of transmission sections comparing its said self address to said final data transmission address, receiving said data message if there is a coincidence thereof, and relaying said data message to at least one of said plurality of transmission sections adjacently disposed thereto if there is no coincidence; repeating step (b) until a said coincidence is detected; wherein said data message includes a relay number indicative of a number of steps of relaying which have been performed; wherein said transmission sections include a relay counter and a predetermined relay count; said step of relaying including the steps of, setting said relay counter of said adjacently disposed one of said plurality of transmission sections to said relay number; comparing said relay counter to said predetermined relay count; incrementing said relay number included in said data message prior to relay of said data message; and completing said step of relaying when said relay counter equals said predetermined relay count.
Claim 2
Independent Claim
256 words
A method of transmitting a data message from a selected transmitting one of a plurality of transmission sections to a selected receiving one of said transmission sections wherein each of said transmission sections is identified by a self address and said selected receiving one of said transmission sections is identified by a final data transmission address in said data message, said method comprising: (a) transmitting said data message from said selected transmitting one of said plurality of transmission sections to at least one adjacently disposed one of said plurality of transmission sections; (b) said adjacently disposed one of said plurality of transmission sections comparing its said self address to said final data transmission address, receiving said data message if there is a coincidence thereof, and relaying said data message to at least one of said plurality of transmission sections adjacently disposed thereto if there is no coincidence; repeating step (b) until a said coincidence is detected; wherein said data message includes a relay number indicative of a number of steps of relaying which have been performed; wherein said transmission sections include a relay counter and a predetermined relay count; said step of relaying including the steps of, setting said relay counter of said adjacently disposed one of said plurality of transmission sections to said relay number; comparing said relay counter to said predetermined relay count; incrementing said relay number included in said data message prior to relay of said data message; and completing said step of relaying when said relay counter equals said predetermined relay count.
Claim 3
Dependent Claim
24 words
The method of claim 1 wherein said step of transmitting transmits said data message to all adjacent ones of said plurality of transmission stations.
Claim 4
Dependent Claim
38 words
The method of claim 1 wherein said step of receiving includes steps of, comparing said relay number to said predetermined relay count; and checking for an error if said relay number does not equal said predetermined relay count.
References Cited (Backward Citations)
US3731002A
Cited
US4210901A
Cited
US4250489A
Cited
US4357598A
Cited
US4427968A
Cited
US4475209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-22 | 1990-12-22 | 1991-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-22 | 1994-12-22 | 1995-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-22 | 1998-12-22 | 1999-06-23 | $7700.00 | Window Closed / Lapsed |