Communication apparatus and method with off-hook detection and power supply control
AssigneeCanon Kabushiki Kaisha
InventorsShigeru Koizumi, Michio Fukushima, Eiji Ohara, Daisuke Suga
Life of this patent
Estimating the term…
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.
Claims10
A communication apparatus, comprising:
- a telephone control unit configured to control a telephone apparatus and having an off-hook detection function operable in a first power mode;
- a first power supply unit configured to supply electric power to the telephone control unit;
- an off-hook detection unit configured to detect an off-hook of the telephone apparatus in a second power mode for which electric power consumption is less than the first power mode;
- a second power supply unit configured to supply electric power to the off-hook detection unit;
- and
- a control unit configured to control so that when the communication apparatus operates in the first power mode, the telephone control unit detects an off-hook of the telephone apparatus, and when the communication apparatus operates in the second power mode, the off-hook detection unit, instead of the telephone control unit, detects the off-hook of the telephone apparatus.
A method of controlling a communication apparatus having a first electric power supply for supplying electric power to a telephone control unit for controlling a telephone apparatus and having an off-hook detection function operable in a first power mode, 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 in a second power mode for which electric power consumption is less than the first power mode, the method comprising:
- controlling so that when the communication apparatus operates in the first power mode, the telephone control unit detects an off-hook of the telephone apparatus, and when the communication apparatus operates in the second power mode, the off-hook detection unit, instead of the telephone control unit, detects the off-hook of the telephone apparatus.
A non-transitory computer-readable storage medium storing a program for causing a computer to function as a communication apparatus comprising:
- a telephone control unit configured to control a telephone apparatus and having an off-hook detection function operable in a first power mode;
- a first power supply unit configured to supply electric power to the telephone control unit;
- an off-hook detection unit configured to detect an off-hook of the telephone apparatus in a second power mode for which electric power consumption is less than the first power mode;
- a second power supply unit configured to supply electric power to the off-hook detection unit;
- and
- a control unit configured to control so that when the communication apparatus operates in the first power mode, the telephone control unit detects an off-hook of the telephone apparatus, and when the communication apparatus operates in the second power mode, the off-hook detection unit, instead of the telephone control unit, detects the off-hook of the telephone apparatus.
Dependencies are inferred from the claim text.