Communications: electrical – Continuously variable indicating – Using a particular modulation
Reexamination Certificate
2005-11-08
2005-11-08
Wong, Albert K (Department: 2635)
Communications: electrical
Continuously variable indicating
Using a particular modulation
C340S870240, C340S853100, C340S854300, C375S254000, C375S242000, C367S083000
Reexamination Certificate
active
06963290
ABSTRACT:
The specification discloses algorithms for error recovery in pulse position modulation-based mud pulse telemetry. More particularly, the specification discloses detection and attempted correction of at least five possible error mechanisms: the missed detection of a pulse that creates an interval greater than maximum; the missed detection of a pulse that results in an interval still within acceptable boundaries; detection of an extra pulse; a pulse shift that results in data in contiguous intervals being affected; and a pulse shift resulting in a single interval data corruption.
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U.S. Appl. No. 09/783,158; filed Feb. 14, 2001; titled: Downlink Telemetry System.
Marsh Laban M.
Pillai Bipin K.
Sun Cili
Viana Leonardo
Conley & Rose, P.C.
Halliburton Energy Service,s Inc.
Scott Mark E.
Wong Albert K
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