Method and apparatus for transmission of analog and digital

a technology of analog and digital transmission, applied in the direction of digital transmission, wireless communication, wireless communication, etc., can solve the problems of no capacity to work with all four, and no bridge throughput of 80%

a technology of analog and digital transmission, applied in the direction of digital transmission, wireless communication, wireless communication, etc., can solve the problems of no capacity to work with all four, and no bridge throughput of 80%

USRE39989E1Inactive Publication Date: 2008-01-01MORRIS WALKER C

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and apparatus for transmission of analog and digital
  • Method and apparatus for transmission of analog and digital
  • Method and apparatus for transmission of analog and digital

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035]Referring to the drawing and to FIG. 1 in particular, shown therein and generally designated by the reference character 120, is a preferred embodiment of a modem-controller according to the present invention. Microcontroller 10 is a microprocessor which is employed as the controller for modem-controller 120. One static read-only memory (RAM) 14 is added to the system to provide adequate working space for programming. An erasable programmable read only memory (EPROM) 16 is added to the system to provide enough ROM space for the firmware. RAM 14 and EPROM 16 are operatively connected to microcontroller 10 by data and address bus 12. Microcontroller 10 executes the firmware or modem BIOS stored in EPROM 16 and manipulates the data in RAM 14 through the data and address bus 12. A decoder in microcontroller 10 is used to decode the address bus to select RAM 14, EPROM 16 or data pump 18. Modem-controller 120 communicates with the DTE 2 through the RS232C interface 6 operatively conn...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A digital communications path-controller for auto switching and controlling the transmission and receiving of analog and error-free transmission of standard digital signals, fax digital signals and analog communications over telephone line service, radio frequency networks, satellite systems, as well as wireless telephone systems includes switches that receive control signals from the micro-controller for controlling and switching the analog or digital path of an internal analog board and the signals from a digital communications path to and from a radio frequency transceiver via a radio frequency transceiver interface / logic board, a wireless telephone transceiver via a wireless telephone transceiver interface, a telephone landline via a telephone line interface, a satellite system via a telephone landline through the telephone line interface. A method selects the telephone line interface which either connects to the telephone line, the satellite system or the wireless telephone, and another method bypasses the telephone line interface, selects and controls radio frequency telemetry modules or packet radios. The operation of the digital communications path-controller is divided into three modes comprising a command mode, a digital mode and an escape mode. The software is a set of digital communication protocols which provide error-free communication of digital and define a file transfer protocol at the application layer, the session protocol and the link protocol.

Description

[0001]This is a request for filing a divisional application under 37 C.F.R. ยง 1.60, of prior application Ser. No. 08 / 711,515 filed on Sep. 10, 1996 now U.S. Pat. No. 5,802,483, of Walker C. Morris, for METHOD AND APPARATUS FOR TRANSMISSION OF VOICE AND DATA, which was divisional application of utility application Ser. No. 08 / 314,533 filed Sep. 28, 1994 now U.S. Pat. No. 5,793,843, which was a File Wrapper Continuation of utility application Ser. No. 07 / 828,527 filed on Jan. 28, 1992, now abandoned, which was a Continuation-in-Part of utility application Ser. No. 07 / 733,826 filed Jul. 22, 1991, now abandoned, which was a Continuation-in-Part of utility application Ser. No. 07 / 429,356 filed Oct. 31, 1989, now abandoned.[0002]More than one reissue application has been filed for the reissue of U.S. Pat. No. 6,230,010. The reissue applications are application Ser. No. 10 / 368,320, filed Apr. 28, 2003 (the present application) and application Ser. No. 11 / 430,301, filed May 8, 2006.<?ins...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
01 Jan 2008
Publication
USRE39989E1
IPC
H04Q7/20; H04B7/185; H04B7/26; H04L29/06; H04L29/08; H04M11/06; H04W88/02
CPC
H04B7/18567; H04M11/06; H04W88/02; H04L69/18; H04L69/324; H04L9/40
Inventors
MORRIS, WALKER C.