Facsimile apparatus, method of controlling facsimile apparatus, and storage medium
AssigneeCanon Kabushiki Kaisha
InventorShigeo Miura
Life of this patent
Estimating the term…
Abstract
A facsimile apparatus includes a first detection unit, a second detection unit, a third detection unit, and a determination unit. The first detection unit detects a line voltage in an on-hook state. The second detection unit detects a line voltage in an off-hook state. The third detection unit detects a line current in an off-hook state. The determination unit determines a line impedance based on the line voltage detected by the first detection unit, the line voltage detected by the second detection unit, and the line current detected by the third detection unit.
Claims10
A facsimile apparatus comprising:
- a first detection unit configured to detect a line voltage in an on-hook state;
- a second detection unit configured to detect a line voltage in an off-hook state;
- a third detection unit configured to detect a line current in an off-hook state;
- and
- a determination unit configured to determine a line impedance based on the line voltage detected by the first detection unit, the line voltage detected by the second detection unit, and the line current detected by the third detection unit.
A method of controlling a facsimile apparatus, the method comprising:
- detecting, as a first detection process, a line voltage in an on-hook state;
- detecting, as a second detection process, a line voltage in an off-hook state;
- detecting, as a third detection process, a line current in an off-hook state;
- and
- determining a line impedance based on the line voltage detected by the first detection process, the line voltage detected by the second detection process, and the line current detected by the third detection process.
A computer-readable storage medium storing a program to cause a computer to execute a method of controlling a facsimile apparatus, the method comprising:
- detecting, as a first detection process, a line voltage in an on-hook state;
- detecting, as a second detection process, a line voltage in an off-hook state;
- detecting, as a third detection process, a line current in an off-hook state;
- and
- determining a line impedance based on the line voltage detected by the first detection process, the line voltage detected by the second detection process, and the line current detected by the third detection process.
Dependencies are inferred from the claim text.