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Voice and data transmission system    
United States Patent5500859   
Link to this pagehttp://www.wikipatents.com/5500859.html
Inventor(s)Sharma; Raghu (North Oaks, MN); Davis; Jeffrey P. (Ham Lake, MN); Gunn; Timothy D. (Mounds View, MN); Li; Ping (New Brighton, MN)
AbstractA 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. The major functions of the system are a telephone function, a voice mail function, a fax manager function, a multimedia mail function, a show and tell function, a terminal function and an address book function. The telephone function allows the present system to operate, from the users perspective, as a conventional telephone using either hands-free, headset or handset operation. The telephone function is more sophisticated than a standard telephone in that the present system converts the voice into a digital signal which can be processed with echo cancellation, compressed, stored as digital data for later retrieval and transmitted as digital voice data concurrent with the transfer of digital information data.
   














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Drawing from US Patent 5500859
Voice and data transmission system - US Patent 5500859 Drawing
Voice and data transmission system
Inventor     Sharma; Raghu (North Oaks, MN); Davis; Jeffrey P. (Ham Lake, MN); Gunn; Timothy D. (Mounds View, MN); Li; Ping (New Brighton, MN)
Owner/Assignee     Multi-Tech Systems, Inc. (Mounds View, MN)
Patent assignment
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Publication Date     March 19, 1996
Application Number     08/289,304
PAIR File History     Application Data   Transaction History
Image File Wrapper   Patent Term   Fees
Litigation
Filing Date     August 11, 1994
US Classification     370/468 370/477 370/535
Int'l Classification     H04J 003/17
Examiner     Olms; Douglas W.
Assistant Examiner     Nguyen; Chau T.
Attorney/Law Firm     Schwegman, Lundberg & Woessner
Address
Parent Case     This is a division of application Ser. No. 08/002,467, filed Jan. 8, 1993 U.S. Pat. No. 5,452,289.
Priority Data    
USPTO Field of Search     370/80 370/81 370/110.1 370/112 370/79 370/111 370/118 370/109 370/24 370/31 370/94.1 379/93 379/96 379/97 379/98 379/90 379/100 379/410
Patent Tags     voice data transmission
   
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