ZXtalk-A IP portfolio

Name of the intellectual property portfolio: ZXtalk-A.

Sectors: high-performance computing (servers), chip manufacturing.
Technical areas: high-speed electrical interconnections, signal integrity.

Title of the patent family Family
Method and device for transmission with reduced crosstalk P26
Digital method and device for transmission with reduced crosstalk P27
Method and device for transmission without crosstalk P28

This portfolio is no longer offered for sale, effective 1 January 2007. To obtain publicly available information on assignments, please click in the "Patent or PCT publ. No." column below.

This portfolio comprises the items listed in the following table. To obtain the PCT applications, click in the "Item ID" column..

Item ID Jurisdiction Application No. Filing date Patent or PCT publ. No. Issue Date Family
P26-A France 03/00064 6 Jan 2003 FR 0300064 29 April 2005 P26
P26-B PCT PCT/EP2003/015036 24 Dec 2003 WO 2004/062129 N/A
P26-C USA 10/541,059 29 June 2005 US 7,167,019 23 Jan 2007
P27-A France 03/02814 6 March 2003 FR 0302814 29 April 2005 P27
P27-B PCT PCT/EP2004/002382 18 Feb 2004 WO 2004/079941 N/A
P27-C USA 10/547,083 26 Aug 2005 US 7,477,069 13 Jan 2009
P28-A France 03/03087 13 March 2003 FR 0303087 15 July 2005 P28
P28-B PCT PCT/EP2004/002383 18 Feb 2004 WO 2004/082168 N/A
P28-C USA 10/547,088 26 Aug 2005 US 7,408,426 5 Aug 2008


     The patent families P26, P27 and P28 are mainly intended to be applied to the ZXtalk techniques for the reduction of internal crosstalk and echo in electrical interconnections such as the one used in a system in package (SiP), a multi-chip module (MCM) or a printed circuit board (PCB). The ZXtalk method improves the performance of links used to obtain m transmission channels using an interconnection having m transmission conductors. The link features a low crosstalk between the transmission channels, in spite of a narrow spacing between the transmission conductors. The link also uses fewer conductors than m differential links.

     A short presentation of the ZXtalk method is available in the Section 3 of this page. Several peer-reviewed technical articles published on this subject matter may be downloaded here. Excem also offers two Seminars and a free electronic book presenting the technical background for assessing and implementing this technology.

     For a conference with technical experts, please contact us. We can also provide several reports relating to these inventions.

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