Title:
METHOD FOR PERFORMING DUAL PHASE PULSE MODULATION
Document Type and Number:
WIPO Patent Application WO2005038577
Kind Code:
A3
Abstract:
A modulation method, referred to as dual phase pulse modulation (DPPM), represents digital data as a series of high and low pulses (Fig. 2B) whose widths represent groups of M data bits (00, 01, 10, 11), with both the high and low pulses representing successive M-bit groups. Each of the 2 possible data values for a group of M data bits uniquely corresponds to one of 2 distinct pulse widths (e.g., 4, 6, 8 and 10 ns). This modulation method is essentially clockless, with data being decoded from a signal by detecting each pulse's width with respect to the last transition. Power consumption is reduced by having M data bits represented for each pulse transition, and by using both the high and low pulses to represent data.
Inventors:
COHEN DANIEL S
MEYER DANIEL J
FAGAN JOHN L
MEYER DANIEL J
FAGAN JOHN L
Application Number:
PCT/US2004/032873
Publication Date:
November 24, 2005
Filing Date:
October 05, 2004
Export Citation:
Assignee:
ATMEL CORP (US)
International Classes:
H03K7/04; H04L25/49; G06F; (IPC1-7): H03K7/04
Foreign References:
| US6711122B1 | 2004-03-23 | |||
| US5394410A | 1995-02-28 |
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