Communication apparatus and method with off-hook detection and power supply control
US9100499B2 · kind B2 · utility
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10Claims
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Assignee
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Key dates
| Filing date | May 28, 2014 |
| Grant date | Aug 4, 2015 |
| Priority date | — |
| Expiry date | May 28, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M3/14
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A communication apparatus has an off-hook detection function, and has a first electric power supply for supplying electric power to a telephone control unit for controlling a telephone apparatus, and a second electric power supply for supplying electric power to an off-hook detection unit for detecting an off-hook of the telephone apparatus. The apparatus causes the off-hook detection unit to detect an off-hook of the telephone apparatus when, from a first power mode, a second power mode, in which electric power consumption is less than in the first power mode, is transitioned into.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.