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US 6,687,512 B1Granted
Subscriber terminal, base station, circuit mode switching method, and a wireless system utilizing said method
AssigneeFujitsu Limited
InventorsMasayuki Shinozaki, Yutaka Hamada
Life of this patent
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Abstract
A wireless system that can switch the communication mode based on the type of a signal inputted into the system is provided. The wireless system comprises a subscriber terminal that is connected to devices which output audio signals or data signals and switches the signal path between an audio signal path and a data signal path based on the type of a signal inputted from the devices, and a base station that switches the signal path between an audio signal path and a data signal path based on the type of a signal inputted from a general public line network. The subscriber terminal and the base station are wirelessly connected.
Claims10
A base station comprising:
- a tone detecting unit that detects a type of a signal inputted from a general public line network;
- a signal path switching unit that switches a signal path between an audio signal path and a data signal path;
- a control unit that controls the signal path switching unit based on the detected type of the signal;
- and
- a communication unit that is wirelessly connected to a subscriber's home;
- wherein a data signal is a facsimile signal or a data communication signal, the signal path switching unit selects the audio signal path as an initial state, and the signal path switching unit selects the data signal path when a tone indicating a facsimile signal or a data communication signal is detected in the base station.
3 more elements
A base station comprising:
- a tone detector that detects a type of a signal inputted from a general public line network;
- a selector that switches a signal path between an audio signal path and a data signal path;
- a controller that controls the selector based on the detected type of the signal;
- and
- an RF block unit that is wirelessly connected to a subscriber's home;
- wherein the data signal is a facsimile signal or a data communication signal, the selector selects the audio signal path as an initial state, and the selector selects the data signal path when a tone indicating a facsimile signal or a data communication signal is detected in the base station.
3 more elements
A wireless system comprising:
- a subscriber terminal that is connected to a device that outputs an audio signal or a data signal, and switches a signal path between an audio signal path and a data signal path based on a type of a signal inputted from the device;
- and
- a base station that switches a signal path between an audio signal path and a data signal path based on a type of a signal inputted from a general public line network,
- wherein the subscriber terminal is wirelessly connected to the base station, the data signal is a facsimile signal or a data communication signal, the base station selects the audio signal path as an initial state, and the base station selects the data signal path when a tone indicating a facsimile signal or a data communication signal is detected at the base station.
1 more element
A communication mode switching method, comprising the steps of:
- selecting an audio signal path as an initial state from signal paths of a subscriber terminal and a base station;
- detecting a type of signal inputted into the subscriber terminal and the base station;
- switching the signal path between the audio signal path and a data signal path based on the detected type of the signal;
- and
- carrying out wireless communication between the subscriber terminal and the base station via the switched signal path,
- wherein the data signal is a facsimile signal or a data communication signal, and in said switching step, the data signal path is selected when a tone indicating a facsimile signal or a data communication signal is detected in the subscriber terminal or the base station.
3 more elements
A subscriber terminal comprising:
- a connecting unit to which a device for outputting an audio signal or a data signal is connected;
- a tone detecting unit that detects a type of a signal inputted through the connecting unit;
- a signal path switching unit that switches a signal path between an audio signal path and a data signal path;
- a control unit that controls the signal path switching unit based on the detected type of the signal;
- and
- a communication unit that is wirelessly connected to a general public line network;
- wherein the data signal is a facsimile signal or a data communication signal, the signal path switching unit selects the data signal path when a tone indicating a facsimile signal or a data communication signal is detected in the subscriber terminal,
- wherein the signal path switching unit selects a facsimile signal path from the data signal path when a preamble signal is detected within a predetermined period of time after a normal called station identifying signal is generated, regardless of whether a calling tone is detected or not,
- and wherein the signal path switching unit selects a data communication signal path from the data signal path when no preamble signal is detected within the predetermined period of time.
6 more elements
Dependencies are inferred from the claim text.