Group 4 facsimile adapter
First Claim
1. A Group 4 facsimile adapter that connects to a facsimile machine which performs Group 3 facsimile communication, the Group 4 facsimile adapter comprising:
- an interface unit for interfacing with a digital data line or network;
a Group 4 facsimile communication-capable unit;
an audio signal codec unit for performing conversion between an analog audio signal and digital data between the audio signal codec unit and the digital data line or network; and
a network control unit for controlling an analog line or network, wherein the network control unit comprises;
ring signal generating means which outputs a ring signal to the facsimile machine; and
switching means for connecting the facsimile machine to the ring signal generating means when the facsimile machine is in a stand-by condition and for connecting the facsimile machine to the audio signal codec unit when the interface unit detects arrival of a call accompanied with Group 3 facsimile data, the ring signal generating means generates a ring signal, and answering to the ring signal by the facsimile machine is detected via the data bus.
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Accused Products
Abstract
The Group 4 facsimile adapter connected to a facsimile machine that performs Group 3 facsimile communication. The Group 4 facsimile adapter includes an interface to a digital data line or network, a Group 4 facsimile communication unit, an audio signal CODEC connected to the digital data line via the interface for converting between analog audio signals and digital data, and a network control unit for controlling an analog line. The Group 4 facsimile adapter is not be provided with a Group 3 modem of its own, and can instead use a Group 3 modem of the existing Group 3 facsimile machine when Group 3 facsimile communication is performed.
13 Citations
9 Claims
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1. A Group 4 facsimile adapter that connects to a facsimile machine which performs Group 3 facsimile communication, the Group 4 facsimile adapter comprising:
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an interface unit for interfacing with a digital data line or network; a Group 4 facsimile communication-capable unit; an audio signal codec unit for performing conversion between an analog audio signal and digital data between the audio signal codec unit and the digital data line or network; and a network control unit for controlling an analog line or network, wherein the network control unit comprises; ring signal generating means which outputs a ring signal to the facsimile machine; and switching means for connecting the facsimile machine to the ring signal generating means when the facsimile machine is in a stand-by condition and for connecting the facsimile machine to the audio signal codec unit when the interface unit detects arrival of a call accompanied with Group 3 facsimile data, the ring signal generating means generates a ring signal, and answering to the ring signal by the facsimile machine is detected via the data bus. - View Dependent Claims (2, 3, 4)
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5. A Group 4 facsimile adapter that connects to a facsimile machine which performs Group 3 facsimile communication, the Group 4 facsimile adapter comprising:
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an interface unit for interfacing with a digital data line or network; a Group 4 facsimile communication-capable unit, wherein the Group 4 communication-capable unit connects to a data bus of the facsimile machine; an audio signal codec unit for performing conversion between an analog audio signal and digital data between the audio signal codec unit and the digital data line or network; and a network control unit for controlling an analog line or network, wherein the network control unit comprises; ring signal generating means which outputs a ring signal to the facsimile machine; and switching means for connecting the facsimile machine to the ring signal generating means when the facsimile machine is in a stand-by condition and for connecting the facsimile machine to the audio signal codec unit when the interface unit detects arrival of a call accompanied with Group 3 facsimile data, the ring signal generating means generates a ring signal, and answering to the ring signal by the facsimile machine is detected via the data bus. - View Dependent Claims (6)
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7. An apparatus connected to a digital line or network for sending and receiving Group 3 and Group 4 facsimile data over the digital line or network, comprising:
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a Group 3 facsimile machine; and a Group 4 facsimile adapter connected between the Group 3 facsimile machine and the digital line or network, the Group 4 facsimile adapter including; a Group 4 facsimile module; an interface unit connected between the digital line or network and the Group 4 facsimile module for interfacing with the digital data line or network; an audio signal codec unit connected between the Group 3 facsimile machine and the interface unit for performing conversion between an analog audio signal and digital data; and a network control unit for controlling an analog line or network, wherein the network control unit includes a bell sound generating circuit for causing the Group 3 facsimile machine to generate a bell when Group 3 facsimile data comes into the Group 4 facsimile adapter from the digital line or network, wherein the network control unit further includes a switch for connecting the Group 3 facsimile machine to the bell sound generating circuit when the Group 3 facsimile machine is in a stand-by condition and for connecting the Group 3 facsimile machine to the audio signal codec unit when Group 3 facsimile data comes into the Group 4 facsimile adapter from the digital line or network. - View Dependent Claims (8, 9)
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Specification