Versatile communication device with a facsimile function and a telephone function
AssigneeBrother Kogyo Kabushiki Kaisha
InventorsSusumu Chida, Junji Hatamura
Life of this patent
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Abstract
In a versatile communication device having a telephone function and a facsimile function, an erroneous detection of an on-hold melody as a control signal, such as a calling tone (CNG) signal, is prevented when the on-hold melody is played during an on-hold period of the telephone, thereby preventing the device from mistakenly switching connection to the facsimile function during the on-hold period. Further, the on-hold melody containing a signal component of the CNG signal or other control signal is prevented from sending to the remote device, so the remote device provided with a facsimile function does not switch to a facsimile mode during the on-hold status of the voice communication.
Claims12
A communication device including a telephone device connectable through a telephone line to a remote telephone device, comprising:
- an on-hold key that sends an on-hold tone out to the remote telephone device when actuated;
- determining means for determining whether or not there is a possibility that the on-hold tone might be detected mistakenly as a communication control signal;
- and
- alerting means for alerting the possibility when said determining means determines that there is such a possibility.
A communication device including a telephone device connectable through a telephone line to a remote telephone device, comprising:
- an on-hold key that sends an on-hold tone out to the remote telephone device when actuated;
- determining means for determining whether or not there is a possibility that the on-hold tone might be detected mistakenly as a communication control signal;
- and
- changing means for changing the on-hold tone when said determining means determines that there is such a possibility.
A communication device including a telephone device connectable through a telephone line to a remote telephone device, comprising:
- an on-hold key that sends an on-hold tone out to the remote telephone device when actuated;
- detecting means for detecting a communication control signal;
- determining means for applying the on-hold tone to said detecting means and determining whether or not the on-hold tone is detected mistakenly as the communication control signal;
- and
- alerting means for alerting the possibility when said determining means determines that the on-hold tone is detected mistakenly as the communication control signal.
A communication device including a telephone device connectable through a telephone line to a remote telephone device, comprising:
- an on-hold key that sends an on-hold tone out to the remote telephone device when actuated;
- detecting means for detecting a communication control signal;
- determining means for applying the on-hold tone to said detecting means and determining whether or not the on-hold tone is detected mistakenly as the communication control signal;
- and
- changing means for changing the on-hold tone when said determining means determines that the on-hold tone is detected mistakenly as the communication control signal.
Dependencies are inferred from the claim text.