Patents by Inventor Sidhartha Maitra
Sidhartha Maitra has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7092406Abstract: A communication apparatus and method includes a modem operable for connection to a telephone line, a voice receiving interface apparatus for use in receiving voice signals from a local user, and a voice conveying interface apparatus for use in conveying voice signals to the local user. Further, processing circuitry, operable under control of a graphical user interface program executable on a personal computer, may be, for example, operable to convert received voice signals from the local user via the voice receiving interface apparatus into outgoing digital voice information, compress the outgoing digital voice information into compressed outgoing digital voice information, and packetize the compressed outgoing digital voice information and provide outgoing packets based thereon. Each of the outgoing packets includes at least one header.Type: GrantFiled: January 17, 2003Date of Patent: August 15, 2006Assignee: Multi-Tech Systems, Inc.Inventors: Raghu Sharma, Jeffrey P. Davis, Timothy D. Gunn, Anuradha Maitra, legal representative, Sidhartha Maitra, deceased
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Patent number: 7082141Abstract: A communication apparatus and method includes a modem operable for connection to a telephone line. Further, under control of a graphical user interface program executable on a personal computer, various processing may be provided. For example, the apparatus and/or method may convert received voice signals from the local user into outgoing digital voice information and convert incoming digital voice information into voice signals, and further may compress the outgoing digital voice information into compressed outgoing digital voice information and decompress compressed incoming digital voice information into the incoming digital voice information. Yet further, processing circuitry may be operable to packetize the compressed outgoing digital voice information and provide outgoing voice packets based thereon (e.g., each of the outgoing voice packets including at least one header), and further may packetize outgoing data packets including outgoing digital data information (e.g.Type: GrantFiled: January 29, 2003Date of Patent: July 25, 2006Assignee: Multi-Tech Systems, Inc.Inventors: Raghu Sharma, Jeffrey P. Davis, Timothy D. Gunn, Anuradha Maitra, legal representative, Sidhartha Maitra, deceased
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Patent number: 7082106Abstract: Outgoing multi-media data components are provided in a communication system and method implemented under control of a user interface program. Each of the outgoing multi-media data components includes one or more types of information (e.g., textual information, graphical information, and audio information). Two or more outgoing multi-media data components are combined under control of a local user via input to the user interface program resulting in combined outgoing multi-media mail. At least one of the two or more outgoing multi-media data components is of a type of information different than another of the two or more outgoing multi-media data components. The combined outgoing multi-media mail is provided for communication to a remote location.Type: GrantFiled: January 24, 2001Date of Patent: July 25, 2006Assignee: Multi-Tech Systems, Inc.Inventors: Raghu Sharma, Jeffrey P. Davis, Sidhartha Maitra, Timothy D. Gunn
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Publication number: 20030223407Abstract: A communication apparatus and method includes a modem operable for connection to a telephone line. Further, under control of a graphical user interface program executable on a personal computer, various processing may be provided. For example, the apparatus and/or method may convert received voice signals from the local user into outgoing digital voice information and convert incoming digital voice information into voice signals, and further may compress the outgoing digital voice information into compressed outgoing digital voice information and decompress compressed incoming digital voice information into the incoming digital voice information. Yet further, processing circuitry may be operable to packetize the compressed outgoing digital voice information and provide outgoing voice packets based thereon (e.g., each of the outgoing voice packets including at least one header), and further may packetize outgoing data packets including outgoing digital data information (e.g.Type: ApplicationFiled: January 29, 2003Publication date: December 4, 2003Applicant: Multi-Tech Systems, Inc.Inventors: Raghu Sharma, Jeffrey P. Davis, Timothy D. Gunn, Ping Li, Sidhartha Maitra, Ashish Thanawala, Steve Young
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Publication number: 20030223461Abstract: A communication apparatus and method includes a modem operable for connection to a telephone line, a voice receiving interface apparatus for use in receiving voice signals from a local user, and a voice conveying interface apparatus for use in conveying voice signals to the local user. Further, processing circuitry, operable under control of a graphical user interface program executable on a personal computer, may be, for example, operable to convert received voice signals from the local user via the voice receiving interface apparatus into outgoing digital voice information, compress the outgoing digital voice information into compressed outgoing digital voice information, and packetize the compressed outgoing digital voice information and provide outgoing packets based thereon. Each of the outgoing packets includes at least one header.Type: ApplicationFiled: January 17, 2003Publication date: December 4, 2003Applicant: Multi-Tech Systems, Inc.Inventors: Raghu Sharma, Jeffrey P. Davis, Timothy D. Gunn, Ping Li, Sidhartha Maitra, Ashish Thanawala, Steve Young
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Publication number: 20020075815Abstract: Outgoing multi-media data components are provided in a communication system and method implemented under control of a user interface program. Each of the outgoing multi-media data components includes one or more types of information (e.g., textual information, graphical information, and audio information). Two or more outgoing multi-media data components are combined under control of a local user via input to the user interface program resulting in combined outgoing multi-media mail. At least one of the two or more outgoing multi-media data components is of a type of information different than another of the two or more outgoing multi-media data components. The combined outgoing multi-media mail is provided for communication to a remote location.Type: ApplicationFiled: January 24, 2001Publication date: June 20, 2002Applicant: Multi-Tech Syatems, Inc.Inventors: Raghu Sharma, Jeffrey P. Davis, Sidhartha Maitra, Timothy D. Gunn
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Patent number: 5790532Abstract: A personal communications system is described which includes components of software and hardware operating in conjunction with a personal computer. The user interface control software operates on a personal computer, preferably within the Microsoft Windows.RTM. environment. The software control system communicates with hardware components linked to the software through the personal computer serial communications port. The hardware components include telephone communication equipment, digital signal processors, and hardware to enable voice, fax and data communication with a remote site connected through a standard telephone line. The functions of the hardware components are controlled by control software operating within the hardware component and from the software components operating within the personal computer.Type: GrantFiled: September 14, 1995Date of Patent: August 4, 1998Assignee: Multi-Tech Systems, Inc.Inventors: Raghu Sharma, Jeffrey P. Davis, Timothy D. Gunn, Ping Li, Sidhartha Maitra, Ashish Thanawala, Steve Young
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Patent number: 5764627Abstract: A personal communications system is described which includes components of software and hardware operating in conjunction with a personal computer. The user interface control software operates on a personal computer, preferably within the Microsoft Windows.RTM. environment. The software control system communicates with hardware components linked to the software through the personal computer serial communications port. The hardware components include telephone communication equipment, digital signal processors, and hardware to enable voice, fax and data communication with a remote site connected through a standard telephone line. The functions of the hardware components are controlled by control software operating within the hardware component and from the software components operating within the personal computer.Type: GrantFiled: April 23, 1996Date of Patent: June 9, 1998Assignee: Multi-Tech Systems, Inc.Inventors: Raghu Sharma, Jeffrey P. Davis, Timothy D. Gunn, Ping Li, Sidhartha Maitra, Ashish Thanawala, Steve Young
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Patent number: 5754589Abstract: The voice over data component of a personal communications system enables the operator to simultaneously transmit voice and data communication to a remote site. This voice over data function directly encodes digitized voice samples onto the carrier using quadrature amplitude modulation to transmit multiple bits of the voice sample for every baud. The system also allocates selected bauds of the carrier to voice and to data so the voice over data may be transmitted using the same allocated bandwidth. The system may also dynamically reallocate the bandwidth over the telephone line depending on the demands of the voice grade digitized signal.Type: GrantFiled: June 25, 1996Date of Patent: May 19, 1998Assignee: Multi-Tech Systems, Inc.Inventors: Sidhartha Maitra, Raghu N. Sharma
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Patent number: 5673257Abstract: A personal communications system is described which includes components of software and hardware operating in conjunction with a personal computer. The user interface control software operates on a personal computer, preferably within the Microsoft Windows.RTM. environment. The software control system communicates with hardware components linked to the software through the personal computer serial communications port. The hardware components include telephone communication equipment, digital signal processors, and hardware to enable voice, fax and data communication with a remote site connected through a standard telephone line. The functions of the hardware components are controlled by control software operating within the hardware component and from the software components operating within the personal computer.Type: GrantFiled: April 25, 1995Date of Patent: September 30, 1997Assignee: Multi-Tech Systems, Inc.Inventors: Raghu Sharma, Jeffrey P. Davis, Timothy D. Gunn, Ping Li, Sidhartha Maitra, Ashish Thanawala, Steve Young
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Patent number: 5673268Abstract: A personal communications system is described which includes components of software and hardware operating in conjunction with a personal computer. The user interface control software operates on a personal computer, preferably within the Microsoft Windows.RTM. environment. The software control system communicates with hardware components linked to the software through the personal computer serial communications port. The hardware components include telephone communication equipment, digital signal processors, and hardware to enable voice, fax and data communication with a remote site connected through a standard telephone line. The functions of the hardware components are controlled by control software operating within the hardware component and from the software components operating within the personal computer.Type: GrantFiled: August 11, 1994Date of Patent: September 30, 1997Assignee: Multi-Tech Systems, Inc.Inventors: Raghu Sharma, Jeffrey P. Davis, Timothy D. Gunn, Ping Li, Sidhartha Maitra, Ashish Thanawala, Steve Young
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Patent number: 5600649Abstract: A personal communications system is described which includes components of software and hardware operating in conjunction with a personal computer. The user interface control software operates on a personal computer, preferably within the Microsoft Windows.RTM. environment. The software control system communicates with hardware components linked to the software through the personal computer serial communications port. The hardware components include telephone communication equipment, digital signal processors, and hardware to enable voice, fax and data communication with a remote site connected through a standard-telephone line. The functions of the hardware components are controlled by control software operating within the hardware component and from the software components operating within the personal computer.Type: GrantFiled: September 14, 1995Date of Patent: February 4, 1997Assignee: Multi-Tech Systems, Inc.Inventors: Raghu Sharma, Jeffrey P. Davis, Timothy D. Gunn, Ping Li, Sidhartha Maitra, Ashish Thanawala, Steve Young
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Patent number: 5592586Abstract: A system for performing voice compression which includes, a conversion means for converting analog voice signals into discrete samples of digital voice data and collecting the discrete samples into segments, with a means for dividing the segments into subsegments and for producing therefrom a current voice subsegment. A pitch prediction means is used for determining the long term predicted gain of the current voice subsegment by comparing the current voice subsegment to reconstructed voice samples to produce a pitch predictor gain and a lag component and a pitch filter means is used for pitch filtering the current voice subsegment based on the pitch predictor gain and the lag component which then produces long term residual samples.Type: GrantFiled: August 11, 1994Date of Patent: January 7, 1997Assignee: Multi-Tech Systems, Inc.Inventors: Sidhartha Maitra, Ashish Thanawala, Steve Young
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Patent number: 5577041Abstract: A personal communications system is described which includes components of software and hardware operating in conjunction with a personal computer. The user interface control software operates on a personal computer, preferably within the Microsoft Windows.RTM. environment. The software control system communicates with hardware components linked to the software through the personal computer serial communications port. The hardware components include telephone communication equipment, digital signal processors, and hardware to enable voice, fax and data communication with a remote site connected through a standard telephone line. The functions of the hardware components are controlled by control software operating within the hardware component and from the software components operating within the personal computer.Type: GrantFiled: June 7, 1995Date of Patent: November 19, 1996Assignee: Multi-Tech Systems, Inc.Inventors: Raghu Sharma, Jeffrey P. Davis, Timothy D. Gunn, Ping Li, Sidhartha Maitra, Ashish Thanawala, Steve Young
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Patent number: 5559793Abstract: A personal communications system is described which includes components of software and hardware operating in conjunction with a personal computer. The user interface control software operates on a personal computer, preferably within the Microsoft Windows.RTM. environment. The software control system communicates with hardware components linked to the software through the personal computer serial communications port. The hardware components include telephone communication equipment, digital signal processors, and hardware to enable voice, fax and data communication with a remote site connected through a standard telephone line. The functions of the hardware components are controlled by control software operating within the hardware component and from the software components operating within the personal computer.Type: GrantFiled: August 11, 1994Date of Patent: September 24, 1996Assignee: Multi-Tech Systems, Inc.Inventors: Sidhartha Maitra, Ashish Thanawala, Steve Young
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Patent number: 5546395Abstract: The present invention includes software and hardware components to enable digital data communication over standard telephone lines. The present invention converts analog voice signals to digital data, compresses that data and places the compressed speech data into packets for transfer over the telephone lines to a remote site. A voice control digital signal processor (DSP) operates to use one of a plurality of speech compression algorithms which produce a scaleable amount of compression. The rate of compression is inversely proportional to the quality of the speech the compression algorithm is able to reproduce. The higher the compression, the lower the reproduction quality. The selection of the rate of compression is dependant on such factors as the speed or data bandwidth on the communications connection between the two sites, the data demand between the sites and amount of silence detected in the speech signal. The voice compression rate is dynamically changed as the aforementioned factors change.Type: GrantFiled: November 29, 1994Date of Patent: August 13, 1996Assignee: Multi-Tech Systems, Inc.Inventors: Raghu N. Sharma, Jeffrey P. Davis, Timothy D. Gunn, Ping Li, Sidhartha Maitra, Ashish A. Thanawala
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Patent number: 5471470Abstract: A personal communications system is described which includes components of software and hardware operating in conjunction with a personal computer. The user interface control software operates on a personal computer, preferably within the Microsoft Windows.RTM. environment. The software control system communicates with hardware components linked to the software through the personal computer serial communications port. The hardware components include telephone communication equipment, digital signal processors, and hardware to enable voice, fax and data communication with a remote site connected through a standard telephone line. The functions of the hardware components are controlled by control software operating within the hardware component and from the software components operating within the personal computer.Type: GrantFiled: August 11, 1994Date of Patent: November 28, 1995Assignee: Multi-Tech Systems, Inc.Inventors: Raghu Sharma, Jeffrey P. Davis, Timothy D. Gunn, Ping Li, Sidhartha Maitra, Ashish Thanawala, Steve Young
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Patent number: 5452289Abstract: A personal communications system is described which includes components of software and hardware operating in conjunction with a personal computer. The user interface control software operates on a personal computer, preferably within the Microsoft Windows.RTM. environment. The software control system communicates with hardware components linked to the software through the personal computer serial communications port. The hardware components include telephone communication equipment, digital signal processors, and hardware to enable voice, fax and data communication with a remote site connected through a standard telephone line. The functions of the hardware components are controlled by control software operating within the hardware component and from the software components operating within the personal computer.Type: GrantFiled: January 8, 1993Date of Patent: September 19, 1995Assignee: Multi-Tech Systems, Inc.Inventors: Raghu Sharma, Jeffrey P. Davis, Timothy D. Gunn, Ping Li, Sidhartha Maitra, Ashish Thanawala, Steve Young
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Patent number: D394250Type: GrantFiled: November 12, 1992Date of Patent: May 12, 1998Assignee: Multi-Tech Systems, Inc.Inventor: Sidhartha Maitra