Source: http://www.google.com/patents/US5629932?dq=7493558
Timestamp: 2015-03-31 12:57:37
Document Index: 449138885

Matched Legal Cases: ['art.\n1', 'art 10', 'art 10', 'art 12', 'art 12', 'art 13', 'art 10', 'art 100', 'art 103', 'art 104', 'art 105', 'art 103', 'art 106', 'art 100', 'art 105']

Patent US5629932 - 12�12 STS-1 switch - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA 12�12 STS-1 switch for outputting twelve STS-1 signals by switching of a VT unit or tie STS-1 unit after receiving inputted twelve STS-1 signals includes a 4-coding counter generating a data control signal and a carry out signal after counting inputed signals in accordance with an operation frequency,...http://www.google.com/patents/US5629932?utm_source=gb-gplus-sharePatent US5629932 - 12�12 STS-1 switchAdvanced Patent SearchPublication numberUS5629932 APublication typeGrantApplication numberUS 08/355,211Publication dateMay 13, 1997Filing dateDec 9, 1994Priority dateDec 9, 1993Fee statusPaidAlso published asCN1069808C, CN1119817APublication number08355211, 355211, US 5629932 A, US 5629932A, US-A-5629932, US5629932 A, US5629932AInventorsDong-Wook KimOriginal AssigneeGoldstar Information Communications, Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (4), Referenced by (7), Classifications (8), Legal Events (11) External Links: USPTO, USPTO Assignment, Espacenet12�12 STS-1 switch
US 5629932 AAbstract
A 12�12 STS-1 switch for outputting twelve STS-1 signals by switching of a VT unit or tie STS-1 unit after receiving inputted twelve STS-1 signals includes a 4-coding counter generating a data control signal and a carry out signal after counting inputed signals in accordance with an operation frequency, a 90-coding counter generating a VT group and a VT channel after counting a frame pulse in accordance with the carry out signal generated at the 4-coding counter, an address generation part generating a switch information read address and a data selection address in accordance with the VT group and the VT channel generated at the 90-coding counter, a data selection signaling generation part outputting a data selection address generated at the address generation part in accordance with the selection signals outputed from the 4-coding counter after combining or selecting, and a data output part selecting and outputting an output data of a data memory in accordance with the data selection address outputted from the data selection signal generation part.
1. A 12�12 STS-1 Switch characterized by the configuration comprisinga 4-coding counter for generating a data control signal and a carry out signal by counting an input signal in accordance with an the operation frequency; a 90-coding counter for generating a VT group and a VT channel by counting a frame pulse in accordance with said carry out signal generated at said 4-coding counter; address generation means for generating a switch information read address and a data selection address in accordance with the VT group and said VT channel generated at said 90-coding counter; data selection signal generation means for outputting said data selection address generated at said address generation means in accordance with a selection signal outputted from said 4-coding counter; and data output means for selecting and outputting an output data of a data memory in accordance with said data selection address outputted from said data selection signal generation means. 2. The switch in accordance with claim 1, wherein said 4-coding counter counts at a data transmission speed of approximately (51.840 Mbps/8)�4=25.92 Mbps.
This invention relates to a 12�12 STS-1 switch, and more particularly, to a 12�12 STS-1 switch for enabling the switching of a VT unit in the hub structure or the digital switching system of a 155 Mbps synchronous transmission equipment.
Generally, the 12�12 STS-1 switch, as illustrated in FIG. 1. includes a data memory part 10 storing the inputted STS-1 data, a 90-coding counter 11 generating the write address of the data memory part 10 and the read address of a switch information memory part 12 by performing the count in accordance with the inputted frame pulse, the switch information memory part 12 where the switch information is stored, and data selection part 13 selecting and outputting the data outputted from the data memory part 10.
Accordingly, a purpose of this invention is to reduce the RADAs of the data by using the 4-coding counter and to provide a 12�12 STS-1 switch whose capacity of the required memory is reduced to one third of the conventional switch.
FIG. 1 is a block configuration diagram of the general 12�12 STS-1 switch.
FIG. 3 is a 12�12 STS-1 switch of the present invention, which comprises of a data memory part 100 storing the STS-1 data being inputted as illustrated below, a 4-coding counter 101 counting the frame pulse in 4-coded number and generating the data selection signal, a 90-coding counter 102 counting the above frame pulse in 90-coded number after being driven by the carry out signal generated at the above 4-coding counter 101, an address generation part 103 generating the switch information read address and the data selection address in accordance with the signal generated at the above 90-coding counter 102, a switch information memory part 104 where the switch information is stored, a data selection signal generation part 105 controlled in accordance with the signaling output from the above 4-coding counter 101 and generating the data selection signal in accordance with the data selection address generated at the above address generation part 103, and a data selection part 106 selecting and outputting the output data of the above data memory part 100 in accordance with the signal outputted from the above data selection signal generation part 105.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS4320501 *Oct 30, 1979Mar 16, 1982Compagnie Industrielle Des Telecommunications Cit-AlcatelMultiplex space switchUS4450557 *Nov 9, 1981May 22, 1984Northern Telecom LimitedSwitching network for use in a time division multiplex systemUS4470139 *Dec 28, 1981Sep 4, 1984Northern Telecom LimitedSwitching network for use in a time division multiplex systemUS5311506 *May 22, 1992May 10, 1994Alcatel N.V.Switching network for switching channels* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS6229808 *Aug 21, 1997May 8, 2001Advanced Micro Devices, Inc.Method of communication for a computer using packet switches for internal data transferUS6870838Jan 16, 2001Mar 22, 2005Lsi Logic CorporationMultistage digital cross connect with integral frame timingUS7260092Jan 16, 2001Aug 21, 2007Lsi CorporationTime slot interchangerUS7301941Jan 16, 2001Nov 27, 2007Lsi CorporationMultistage digital cross connect with synchronized configuration switchingUS7330428Apr 18, 2003Feb 12, 2008Lsi Logic CorporationGrooming switch hardware schedulerUS7346049Feb 19, 2003Mar 18, 2008Brian Patrick TowlesScheduling connections in a multi-stage switch to retain non-blocking properties of constituent switching elementsEP1300970A1 *Oct 7, 2002Apr 9, 2003Marconi Mobile SpAFrame generator with multiplexer implemented on programmable FPGA devices for SDR applications,frame generation method and transmission system* Cited by examinerClassifications U.S. Classification370/382International ClassificationH04J3/16, H04Q11/06, H04Q11/04Cooperative ClassificationH04J3/1611, H04Q11/06European ClassificationH04Q11/06, H04J3/16A2Legal EventsDateCodeEventDescriptionFeb 24, 2011ASAssignmentEffective date: 20100630Owner name: LG-ERICSSON CO., LTD., KOREA, REPUBLIC OFFree format text: CHANGE OF NAME;ASSIGNOR:LG-NORTEL CO., LTD.;REEL/FRAME:025948/0842Nov 30, 2009ASAssignmentOwner name: LG-NORTEL CO., LTD., KOREA, REPUBLIC OFFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LG ELECTRONICS INC.;REEL/FRAME:023574/0497Effective date: 20091126Oct 8, 2009ASAssignmentOwner name: LG ELECTRONICS INC., KOREA, REPUBLIC OFFree format text: CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE S ADDRESS, PREVIOUSLY RECORDED ON REEL 002330 FRAME 0001;ASSIGNOR:LG CORPORATION;REEL/FRAME:023486/0339Effective date: 20090923Oct 6, 2009ASAssignmentOwner name: LG ELECTRONICS INC., KOREA, REPUBLIC OFFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LG CORPORATION;REEL/FRAME:023330/0001Effective date: 20090923Oct 5, 2009ASAssignmentOwner name: LG CORPORATION, KOREA, REPUBLIC OFFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LG ELECTRONICS INVESTMENT, LTD.;REEL/FRAME:023319/0496Effective date: 20030304Oct 2, 2009ASAssignmentOwner name: LG ELECTRONICS INVESTMENT, LTD., KOREA, REPUBLIC OFree format text: CHANGE OF NAME;ASSIGNOR:LG ELECTRONICS INC.;REEL/FRAME:023319/0116Effective date: 20020402Sep 24, 2008FPAYFee paymentYear of fee payment: 12Sep 22, 2004FPAYFee paymentYear of fee payment: 8Sep 28, 2000FPAYFee paymentYear of fee payment: 4Apr 9, 1997ASAssignmentOwner name: LG INFORMATION & COMMUNICATIONS, LTD., KOREA, REPUFree format text: CHANGE OF NAME;ASSIGNOR:GOLDSTAR INFORMATION COMMUNICATIONS, LTD.;REEL/FRAME:008440/0150Effective date: 19950111Feb 9, 1995ASAssignmentOwner name: GOLDSTAR INFORMATION COMMUNICATIONS, LTD., KOREA,Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:KIM, DONG-WOOK;REEL/FRAME:007350/0996Effective date: 19950208RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services