Data recovery
AssigneeHewlett-Packard Development Company, L.P.
InventorsPeter Arthur Walsh, Rafel Jibry
Life of this patent
Estimating the term…
Abstract
Encoded data is decoded by a receiver for an analogue input signal that is converted into a digital signal. A detector produces a sequence of data representative of the analogue signal, a decoder for the sequence of data outputs data indicating that a sequence includes an error. An event detector detects an event which substantially alters or destroys the analogue input signal. The decoder outputs data corresponding to the or each sequence resulting from the altered or destroyed analogue input signal indicating that the sequence is incorrect.
Claims13
Decoding apparatus for the recovery of encoded data, the apparatus comprising an analogue-to-digital converter for receiving an analogue input signal and converting it into a digital signal, a detector for producing sequences of data representative of said analogue signal, and a decoder arranged to output data indicating that a sequence includes an error, an event detector for (a) detecting an event for altering or destroying said analogue input signal, and supplying an input to said detector one or more event signals indicating the occurrence of such an event, in response to which said detector is arranged to output one or more invalid sequences of data, the decoder being arranged to output a data stream representing said analogue input signal and including, in response to the event detector detecting the occurrence of an event, data corresponding to the or each sequence resulting from said altered or destroyed analogue input signal indicating that said sequence is incorrect.
A method of recovering encoded data, comprising the steps of receiving an analogue input signal and converting it into a digital signal, producing sequences of data representative of said analogue signal, and decoding said sequence of data and outputting it together with data indicating whether or not a sequence includes an error, monitoring said input signal and detecting an event which substantially alters or destroys said analogue input signal, producing one or more event signals indicating the occurrence of such an event, in response to which one or more invalid sequences of data are produced, and deriving on a single communication path a data stream representing said analogue input signal and including data corresponding to the or each sequence resulting from said altered or destroyed analogue input signal indicating that said sequence is incorrect.
Decoding apparatus for the recovery of encoded data, the apparatus comprising an analogue-to-digital converter for receiving an analogue input signal and converting it into a digital signal, a detector for producing sequences of data representative of said analogue signal, and a decoder arranged to output data indicating that a sequence includes an error, comprising an event detector for detecting an event for substantially altering or destroying said analogue input signal, the event detector being coupled or connected to said detector and arranged to provide as an input the detector one or more event signals for the duration of a detected event, the detector being arranged to respond to receipt of said one or more event signals by outputting an invalid encoded sequence of data, for causing the decoder to output code words including data indicating that said code words are incorrect representative of the duration of the event.
Decoding apparatus for the recovery of encoded data, the apparatus comprising an analogue-to-digital converter for receiving an analogue input signal and converting it into a digital signal, a detector for producing sequences of data representative of said analogue signal, a decoder arranged to output data indicating that a sequence includes an error, an event detector for detecting an event for substantially altering or destroying said analogue input signal, said event detector being coupled or connected to said decoder, and arranged to provide as an input to said detector one or more event signals indicating the occurrence of an event for substantially altering or destroying said analogue input signal, said decoder being arranged to be responsive to said one or more event signals to output code words representative of said analogue input signal together with data indicating that said code words are incorrect.
Dependencies are inferred from the claim text.