Dual DDS data multiplexer

Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via time channels

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

375288, 375289, 379 9306, H04J 302

Patent

active

059783907

ABSTRACT:
A method and apparatus 200 for converting dual 4-wire digital data services (DDS-1 and DDS-2) for transmission over a single twisted pair telephone line 205. The present method includes use of a digital data service remote terminal 219 and a digital data service central office terminal 201. Each terminal converts more than one 4-wire digital data services into a 2B1Q signal for transmission over the single twisted pair telephone line 205. The present method provides an efficient and cost effective technique for increasing 4-wire digital data services to a customer premises without a corresponding increase in the number of telephone lines.

REFERENCES:
patent: 3308240 (1967-03-01), Von Sanden
patent: 3510584 (1970-05-01), Krasin et al.
patent: 3660606 (1972-05-01), De Witt
patent: 3711650 (1973-01-01), Kuhn et al.
patent: 3824597 (1974-07-01), Berg
patent: 3851106 (1974-11-01), Jacobeus
patent: 3922493 (1975-11-01), Brenig et al.
patent: 3936602 (1976-02-01), Korver
patent: 4001514 (1977-01-01), Wurst
patent: 4078159 (1978-03-01), Lender et al.
patent: 4100377 (1978-07-01), Flanagan
patent: 4112427 (1978-09-01), Hofer et al.
patent: 4145574 (1979-03-01), Wintzer
patent: 4351049 (1982-09-01), Nobis
patent: 4381427 (1983-04-01), Cheal et al.
patent: 4398284 (1983-08-01), Canniff
patent: 4417333 (1983-11-01), Cochennec
patent: 4519073 (1985-05-01), Bertocci et al.
patent: 4577315 (1986-03-01), Otsuka
patent: 4578538 (1986-03-01), Pascucci et al.
patent: 4642805 (1987-02-01), Dumas et al.
patent: 4644527 (1987-02-01), Anderson et al.
patent: 4689789 (1987-08-01), Herger
patent: 4698801 (1987-10-01), Hatano et al.
patent: 4712210 (1987-12-01), Davis et al.
patent: 4740963 (1988-04-01), Eckley
patent: 4745624 (1988-05-01), Mantovani et al.
patent: 4751696 (1988-06-01), Black
patent: 4755994 (1988-07-01), Staples et al.
patent: 4771418 (1988-09-01), Narasimhan et al.
patent: 4788680 (1988-11-01), Kikuchi et al.
patent: 4901344 (1990-02-01), Monette et al.
patent: 4924492 (1990-05-01), Gitlin et al.
patent: 5040190 (1991-08-01), Smith et al.
patent: 5111497 (1992-05-01), Bliven et al.
patent: 5160929 (1992-11-01), Costello
patent: 5198818 (1993-03-01), Samueli et al.
patent: 5208846 (1993-05-01), Hammond et al.
patent: 5216704 (1993-06-01), Williams et al.
patent: 5255317 (1993-10-01), Arai et al.
patent: 5303267 (1994-04-01), Gupta
patent: 5369696 (1994-11-01), Krauss et al.
patent: 5375122 (1994-12-01), Soupirot et al.
patent: 5428682 (1995-06-01), Apfel
patent: 5453989 (1995-09-01), Kitayama et al.
patent: 5459729 (1995-10-01), Bliven
patent: 5459730 (1995-10-01), Bliven
patent: 5473613 (1995-12-01), Bliven
patent: 5668814 (1997-09-01), Balatoni
Fukuda et al., "An Approach to LSI Implementation of a 2B1Q Coded Echo Canceler for ISDN Subscriber Loops Transmission," IEEE International Conference on Communications Bostonicc/89, Jun. 11-14, 1989 (Boston, MA) CH2655-9/89/0000-0233, pp. 0233-0238.
Gerwin et al., "Dual Digital Transmission System for Multipair Cables Based on Crank-Shaft Coding"Electronics Letters, Jul. 19, 1984, vol. 20, No. 15, pp. 615-621.
Klodt, "Two Terminals for DMS-1" Telesis Aug. 1977, pp. 107-112.
Siemens, Dual Channel Codec Filter (SICOFI.RTM.2) PEB 2260, Data Sheet, Rev. 1.0, Siemens AG Jan. 1989.
Letter from David Bliven to Nynex Material Enterprises, Jan. 23, 1989 (with Request for Quote), 38 pages.
"Leading Edge Access," Eastern Communications Forum 88, May 2-4, 1988, Rye Brook, New York, 21 pages.
Advertising materials for "DuaLine System" (1990) Rockwell International, 6 pages.
Advertising materials for "DigiLoop" (Undated) ECI Telecom, 5 pages.
Advertising materials for "DAML-100" (Undated) Wheelock, Inc., 2 pages.
Advertising materials for "Pairgain2 Digital Pair Saver" (Undated) PairGain Technologies, Inc., 4 pages.
Siemens, ISDN Communication Controller (ICC) PEB 2070 Data Sheet, Rev. 3.0 (Jul. 1988), pp. 1.3-5.2.
ANSI, Integrated Services Digital Network (ISDN) Basic Access Interface for Use on Metallic Loops for Application on the Network Side of the NT (1988), pp. 15-77.
"Requirements and Objectives for Digital Added Main Line (DAML)," Pacific Bell PUB L-780057-B/NB, Issue 1, May 1989, pp. i-iii and 1-1 to 9-3.
Kaiser et al., "Digital Two-Wire Local Connection Providing Office Subscribers with Speech, Data and New Teleinformation Services," ISSLS, Mar. 20-24, 1978, pp. 126-130.
Kawakami et al., "Improved Subscriber Loop Multiplexing Systems for Rural Areas," Japan Telecommunications Review, Apr. 1978, pp. 125-132.
Siemens, Telecommunications Data Book 1987, pp. 5-20 to 5-21.
Bellamy, Digital Telephony, Chapters 1 and 2, John Wiley & Sons, 1982, pp. 1-82.
Optilink Corporation, "PAIRSPAN-2 Digital Subscriber Carrier System Product Line Description,": Jul. 20, 1989, 12 pages.
Optilink Corporation, "Pairspan-2 Two Line Digital Carrier System," 1989, 4 pages.
Pacific Bell Request for Quote, Jun. 14, 1989, 54 pages.
Bell Atlantic Network Services, Inc., RFQ# 90BGP0018, 55 pages.
Wildman, Bruce R., "Electronic Equipment--Survival In The Outside Plant," Unknown publication source, believed to have been published on or before Dec. 1988, pp. 629-630.
Letter from Jeff Nash, "2B1Q, U-Interface Line Code Tutorial," MITEL Semiconductor Product News, Feb. 5, 1987.
Boyer, Gerald R., and Pitchford, Mark, "Universal Digital Channel (UDC)--Synergy With ISDN and the Second Main Line Application," Unknown publication source, believed to have been published on or before Dec. 1988, pp. 624-628.
Bell Communications Research, "Universal Digital Channel (UDC) Requirements and Objectives,"Technical Advisory TA-TSY-000398, Issue 1, Sep. 1986.
Bell Communications Research, "ISDN Basic Access Digital Subscriber Lines," Technical Advisory TA-TSY-000393, Issue 1, Mar. 1987.
British Telecommunications PLC, "British Telecommunications Headquarters Specification RC 7328," Draft 2, received in commercial confidence on or about Apr. 1988.
"Application Note for 2B1Q Line Code Tutorial" MITEL ST-BUS.TM. Family MSAN-127, 9161-001-040 NA, Issue 1, Jan. 1987.
"Application Note for Implementing an ISDN Architecture Using the ST-BUS" MITEL MSAN-128, 9161-001-042 NA, Issue 1, Mar. 1987.
"Application Note for Time Space Switching of 8, 16 or 32 K Bps Channels Using the MT8980" MITEL MSAN-129, 9161-001-044 NA, Issue 1, Apr. 1987.
"Application Note for Implementation Details of the MT8930 S/T Interface" MITEL MSAN-130, 9161-001-045 NA, Issue 1, Oct. 1988.
International Telecommunication Union, "Digital Networks, Digital Sections and Digital Line Systems" CCITT Blue Book, Recommendations G.801-G.961, vol. III, IXth Plenary Assembly, Melbourne, Nov. 14-25, 1988.
Hewett, Les and Pitchford, Mark, "Making the Transition: Fiber Winds Its Way Home," Telephony, Feb. 15, 1988, pp. 34-39.
Pacific Bell, Nevada Bell, "Requirements and Objectives for Digital Added Main Line (DAML)," Technical Reference, PUB-L-780057-PB/NB, Issue 1, May 1989.
Bell Communications Research, "General Requirements for ISDN Basic Access Digital Subscriber Lines," Technical Reference TR-NWT-000393, Issue 2, Jan. 1991.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Dual DDS data multiplexer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dual DDS data multiplexer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dual DDS data multiplexer will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2145622

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.