Electrical computers and digital processing systems: support – Synchronization of clock or timing signals – data – or pulses
Reexamination Certificate
2007-08-06
2009-11-17
Lee, Thomas (Department: 2115)
Electrical computers and digital processing systems: support
Synchronization of clock or timing signals, data, or pulses
C713S503000, C709S208000, C709S253000
Reexamination Certificate
active
07620837
ABSTRACT:
A data transmission system including a slave device (30) and a master device (10) is disclosed. Slave device (30) may include a slave side clock signal generator section (32) for generating a slave side clock signal (CLKSOUT), a phase adjusting circuit (40) for controlling a phase of a slave side clock signal (CLKSOUT), output sections (33-1to33-m) for outputting transmission data signals (SD1to SDm) in response to slave side clock signal (CLKSOUT), and a timing reference signal generator section (34) for outputting a timing reference signal (SSPH) in response to slave side clock signal (CLKSOUT). Master device (10) may include a master side clock signal generator section (11) for generating master side clock signal (CLKM), input sections (12-1to12-m) for sampling data signals (SD1to SDm) in response to master side clock signal (CLKM), and a phase compare circuit (19) for generating a phase adjustment instruction signal (SADJOUT) based upon timing reference signal (SSPH) and master side clock signal (CLKM). Phase adjusting circuit (40) may adjust a phase of slave side clock signal (CLKSOUT) in response to phase adjustment instruction signal (SADJOUT). In this way, data setup and/or hold times may be improved.
REFERENCES:
patent: 5864592 (1999-01-01), Itri
patent: 6078623 (2000-06-01), Isobe et al.
patent: 6329858 (2001-12-01), Sobue
patent: 6385263 (2002-05-01), Bowers et al.
patent: 6839393 (2005-01-01), Sidiropoulos
patent: 2002/0020852 (2002-02-01), Huang
patent: 2002/0116468 (2002-08-01), Ishikawa
U.S. Appl. No. 10/062,907, filed Aug. 22, 2002, Ishikawa, Toru.
Elpida Memory Inc.
Lee Thomas
Tran Vincent T
Walker Darryl G.
LandOfFree
Data transmission system and data transmission apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Data transmission system and data transmission apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Data transmission system and data transmission apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4110473