Conditional invert functions in precharged circuits
US6140843A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 20, 1998 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Aug 20, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2207/3872
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The present invention provides a data processing apparatus comprising a precharged circuit having at least one input line arranged to be precharged to a first logic value during a precharge phase, and a conditional-invert circuit connected to a first at least one input line and arranged to provide a first data value or the inverted first data value on the first input line during an active phase following the precharge phase. The conditional-invert circuit comprises a signal line coupled to the first input line and arranged to be precharged to a predetermined logic value during the precharge phase, a first set of logic gates connected between the signal line and a predetermined voltage, and being arranged upon receipt of a select signal to cause the first data value to be provided on the first input line, and a second set of logic gates connected between the signal line and the predetermined voltage, and being arranged upon receipt of a select signal to cause the inverted first data value to be provided on the first input line. In the active phase, either the first set of logic gates or the second set of logic gates is arranged to receive the select signal. In accordance with the pr…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.