Apparatus and control method for the same
AssigneeCanon Kabushiki Kaisha
InventorNaoki Sugawara
Life of this patent
Estimating the term…
Abstract
An apparatus which accepts a connection of an external telephone and connects to a telephone line includes a first controller configured to control line impedance via the telephone line, a detecting unit configured to detect a ringing signal received from the telephone line, a determining unit configured to determine whether the external telephone captures a telephone line, and a second controller configured to invalidate the control over line impedance by the first controller in a case where the apparatus is a standby state and validate the suppression of the control over ringer impedance by the first controller in a case where the detecting unit detects the ringing signal and the determining unit determines that the external telephone does not capture a telephone line.
Claims10
An apparatus which accepts a connection of an external telephone and connects to a telephone line, the apparatus comprising:
- a first controller configured to control line impedance of the telephone line;
- a detecting unit configured to detect a ringing signal received from the telephone line;
- a determining unit configured to determine whether the external telephone captures a telephone line;
- and
- a second controller configured to suppress the control over line impedance by the first controller in a case where the apparatus is a standby state and cancel the suppression of the control over line impedance by the first controller in a case where the detecting unit detects the ringing signal and the determining unit determines that the external telephone does not capture a telephone line.
A control method for an apparatus which allows a connection of an external telephone and connects to a telephone line, the method comprising:
- controlling line impedance of the telephone line;
- detecting a ringing signal received from the telephone line;
- determining whether the external telephone captures a telephone line;
- invalidating the control over line impedance when the apparatus is a standby state;
- and
- canceling the suppression of the control over line impedance in a case where the ringing signal is detected and it is determined that the external telephone does not capture a telephone line.
Dependencies are inferred from the claim text.