Facsimile machine for receiving caller-ID information
US5898506A · kind A · utility
3Cited by
8References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 28, 1996 |
| Grant date | Apr 27, 1999 |
| Priority date | — |
| Expiry date | May 28, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/3278
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A facsimile machine capable of receiving input of data from a switchboard over a telephone circuit during a silent interval between a first ring signal and a second ring signal, and including a network control unit NCU for detecting the first ring signal; a clock for starting measurement of a predetermined duration of time when the NCU detects the first ring signal and stopping measurement of the predetermined duration of time between an end of the data and a beginning of the second ring signal; and a CPU for causing the NCU to close a telephone circuit when the clock stops measurement of the predetermined duration of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.