Multimedia interface for a communications network

• US 6,934,278 B1
• Filed: 12/28/1998
• Issued: 08/23/2005
• Est. Priority Date: 12/28/1998
• Status: Expired due to Fees

• Current Assignee: Unisys Corporation
• Original Assignee: Unisys Corporation
• Inventors: Shyti, Daniel A., Champa, John J.
• Primary Examiner(s): Ho, Duc
• Assistant Examiner(s): Nguyen, Phuongchau Ba
• Application Number:
  US09/221,447
• Time in Patent Office: 2,430 Days
• Field of Search: 370/493, 370/495, 370/497, 370/465, 370/466, 370/467, 370/487, 370/353, 370/354, 370/355, 370/356, 370/391, 370/395.3, 370/469, 370/395.5, 370/401, 370/395.52, 370/395.53, 370/463, 370/481, 370/494, 370/264, 370/352, 379/93.05, 379/88.13, 379/93.08, 379/88.23, 379/93.09, 379/93.21, 345/853, 455/557, 455/556, 709/225, 709/223, 709/238, 709/217, 709/231, 709/234, 709/236, 709/204, 348/14.08, 348/14.05, 348/14.12, 348/14.13, 348/14.15
• US Class Current: 370/352
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
• CPC Class Codes: H04L 65/1026 at the edge
• CPC Class Codes: H04L 65/1036 at the edge
• CPC Class Codes: H04L 65/1069 Session establishment or de-establishment
• CPC Class Codes: H04L 65/1101 Session protocols
• CPC Class Codes: H04L 65/1106 Call signalling protocols; H.323 and related
• CPC Class Codes: H04L 67/08 specially adapted for terminal emulation, e.g. Telnet
• CPC Class Codes: H04L 69/18 Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

A multimedia interface circuit is used to connect multimedia signal sources such as a telephone to a network. The multimedia interface circuit has a telephone communication interface circuit for receiving the telephone signal from the telephone. A signal conditioner receives the signal from the telephone communication interface circuit and conditions it for use on the network. A phone environment simulator cooperates with the signal conditioner to add an artificially simulated phone environment to the signal. The signal is then sent by a network communication circuit to the network. Personal computers and video sources may also be connected by the multimedia interface circuit to the network.

Claims

1. A multimedia interface circuit having ports for interchangeably connecting any one of a plurality of multimedia signal sources including a telephone to a network comprising,

a telephone communication interface circuit, including a telephone interface, for receiving a telephone signal from said telephone, for determining if said telephone signal is analog or digital, and for interfacing said telephone signal to said multimedia interface circuit,

a signal conditioner receiving the output of said telephone communication interface circuit for providing a compressed and packetized digital telephone signal as an output,

a phone environment simulator communicating with said signal conditioner to add an artificially simulated phone environment to said digital telephone signal,

a network communication circuit receiving said signal conditioner output for communicating said signal conditioner output to said network,

a video port for receiving and transmitting video signals,

said signal conditioner receiving the output of said video port, said signal conditioner for compressing and packetizing said video signal,

said network communication circuit receiving said video signal output of said signal conditioner, said network communication circuit capable of providing said signal conditioner video output signal to said network,

wherein any one of said plurality of multimedia signal sources connected to said multimedia interface circuit can be connected via said network to any of said plurality of multimedia signal sources connected to another said multimedia interface circuit.

3. The multimedia interface circuit of claim 1 further comprising,

a POTS port capable of being connected to a POTS telephone network, and

a POTS switch in said telephone communication interface circuit for receiving said telephone signal and for determining whether said telephone signal is to be routed to said POTS telephone network or to the signal conditioner.

4. The multimedia interface circuit of claim 1 or 2 in which said telephone communication interface circuit includes,

a telephone port for receiving said telephone signal, and providing said telephone said signal to said telephone interface.

5. The multimedia interface circuit of claim 4 in which said phone environment simulator includes,

a digital signal processor receiving said digital telephone signal for adding an artificially simulated phone environment to said digital telephone signal.

6. The multimedia interface circuit of claim 5 in which said phone environment simulator includes a tone generator for producing said artificially simulated phone environment.

7. The multimedia interface circuit of claim 5 in which said phone environment simulator produces a ring tone and a dial tone.

8. The multimedia interface circuit of claim 6 in which said signal conditioner includes:

a transcoder capable of receiving a digital telephone signal from said telephone communication interface circuit for transcoding and compressing said digital telephone signal,

a voice codec capable of receiving an analog telephone signal from said telephone communication interface circuit for converting said analog telephone signal to a digital signal and compressing said digital telephone signal, and

a voice packetizer capable of receiving said digital telephone signals from said transcoder and said voice codes for packetizing said digital telephone signals.

9. The multimedia interface circuit of claim 8 in which said network communication circuit includes,

a network interface receiving said packetized digital telephone signal from said voice packetizer, for formatting said packetized digital telephone signal to be compatible with said network, and

a network port connected to said network, said network port receiving said digital telephone signal from said network interface for providing said telephone signal to said network.

10. The multimedia interface circuit of claim 9 in which said network is an intranet.

11. The multimedia interface circuit of claim 1 having a computer port capable of receiving and transmitting computer signals, said computer port connected to said network interface, said network interface capable of providing said computer signals through said network port to said network.

2. A multimedia interface circuit having ports for interchangeably connecting any one of a plurality of multimedia signal sources including a telephone to a network comprising,

a POTS port capable of being connected to a POTS telephone network;

a telephone communication interface circuit, including a telephone interface, for receiving a telephone signal from said telephone, for determining if said telephone signal is analog or digital, and for interfacing said telephone signal to said multimedia interface circuit, said telephone communication interface circuit including a POTS switch for receiving said telephone signal and for determining whether said telephone signal is to be routed to said POTS telephone network or to a signal conditioner,

said signal conditioner receiving the output of said telephone communication interface circuit providing a compressed and packetized digital telephone signal as an output,

a phone environment simulator communicating with said signal conditioner to add an artificially simulated phone environment to said digital telephone signal, and

a network communication circuit receiving said signal conditioner output for communicating said signal conditioner output to said network,

a video port for receiving and transmitting video signals,

a video codec receiving the output of said video port, said video codec for compressing said video signal,

a video packetizer receiving the output of said video codec, said video packetizer for packetizing the output of said video codec; and

,

said network communication circuit receiving the output of said video packetizer, said network communication circuit capable of providing said video packetizer signals to said network,

wherein any one of said plurality of multimedia signal sources connected to said multimedia interface circuit can be connected via said network to any of said plurality of multimedia signal sources connected to another said multimedia interface circuit.

12. The multimedia interface circuit of claim 2 including a computer port capable of receiving and transmitting computer signals, said computer port connected to said network interface, said network interface capable of providing said computer signals through said network port to said network.

13. A multimedia interface circuit for interchangeably connecting any one of a plurality of multimedia signal sources including a telephone to a network comprising:

a telephone port for receiving a telephone signal;

a telephone interface receiving said telephone signal from said telephone port for interfacing said telephone signal to said multimedia interface circuit and determining if said telephone signal is analog or digital;

a transcoder capable of receiving a digital telephone signal from said telephone interface for transcoding and compressing said digital telephone signal;

a voice codec capable of receiving an analog telephone signal from said telephone interface for converting said analog telephone signal to a digital signal and compressing said digital telephone signal;

a voice packetizer capable of receiving said digital telephone signals from said transcoder and said voice codec for packetizing said digital telephone signals;

a digital signal processor cooperating with said transcoder and said voice codec for adding an artificially simulated phone environment to said digital telephone signal,

a network interface receiving said packetized digital telephone signal from said voice packetizer, for formatting said packetized digital telephone signal to be compatible with said network;

a network port connected to said network, said network port receiving said digital telephone signal from said network interface;

a video port for receiving and transmitting video signals;

a video codec receiving the output of said video port, said video codec for compressing said video signal; and

,

a video packetizer receiving the output of said video codec, said video packetizer for packetizing the output of said video codec, said network interface receiving the output of said video packetizer, said network interface capable of providing said video packetizer signals though said network port to said network,

wherein any one of said plurality of multimedia signal sources connected to said multimedia interface circuit can be connected via said network to any of said plurality of multimedia signal sources connected to another said multimedia interface circuit.

14. The multimedia interface circuit of claim 13 in which said network is an intranet.

15. The multimedia interface circuit of claim 13 in which said artificially simulated phone environment includes a ring and a dial tone.

16. The multimedia interface circuit of claim 13, including:

a POTS port capable of being connected to a POTS telephone network; and

,

a POTS switch receiving said telephone signal from said telephone interface for determining whether said telephone signal is to be routed to said POTS telephone network or to the transcoder.

17. The multimedia interface circuit of claim 13 including,

a computer port capable of receiving and transmitting computer signals, said computer port connected to said network interface, said network interface capable of providing said computer signals through said network port to said network.