Facsimile apparatus having V.8 protocol facility and facsimile communication method
US6437870B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1997 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Jan 31, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/33307
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A CI signal of a V.8 protocol is transmitted in response to the reception of a DIS signal indicating the provision of a V.8 facility, and the V.8 protocol is executed in response to the reception of an ANSam signal of V.8, and when the DIS signal indicating the provision of the V.8 facility is received without receiving the ANSam signal, the CI signal is retransmitted. When a transmitting station or a receiving station does not have a V.34 facility after the V.8 protocol, the DIS signal indicating the non-provision of the V.8 facility is transmitted. Thus, when the V.8 protocol facility is provided with a facsimile apparatus, communication with a conventional apparatus having only a T.30 protocol is attained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.