Transition tracking
AssigneeVerigy (Singapore) Pte. Ltd.
InventorJochen Rivoir
Life of this patent
Estimating the term…
Abstract
A method for tracking transitions in a bit stream of a signal includes taking a first sample of said bit stream at a first sampling point of a first sampling sequence, taking a second sample of said bit stream at a second sampling point of said first sampling sequence, and taking a third sample of said bit stream at a third sampling point of said first sampling sequence, wherein said second sampling point is adjusted so that within a first time period, defined by said first and said second sampling points, the number of transitions in said bit stream is equal to the number of transitions within a second time period, defined by said second and said third sampling points.
Claims17
A method for tracking transitions in a bit stream of a signal, said method comprising the steps of:
- taking a first sample of said bit stream at a first sampling point of a first sampling sequence,
- taking a second sample of said bit stream at a second sampling point of said first sampling sequence, and
- taking a third sample of said bit stream at a third sampling point of said first sampling sequence,
- evaluating occurrence of at least one transition within at least one of a first and a second time period, wherein the first time period is defined by said first and said second sampling points, and the second time period is defined by said second and said third sampling points,
- adjusting said second sampling point to be near to the point in time where transition occurred, and
- tracking transitions in the bit stream by comparing bit values of the first, second, and third samples of the bit stream.
A system for tracking transitions in a bit stream of a signal, said system comprising a sampling unit for
- taking a first sample of said bit stream at a first sampling point of a first sampling sequence,
- taking a second sample of said bit stream at a second sampling point of said first sampling sequence, and
- taking a third sample of said bit stream at a third sampling point of said first sampling sequence,
- and evaluating occurrence of at least one transition within at least one of a first and a second time period, wherein the first time period is defined by said first and said second sampling points, and the second time period is defined by said second and said third sampling points,
- an adjusting unit for
- adjusting said second sampling point to be near to the point in time where transitions occurred,
- and circuitry for
- tracking transitions in the bit stream by comparing bit values of the first, second, and third samples of the bit stream.
Dependencies are inferred from the claim text.