Speech recognition system having first and second registers enabling both to concurrently receive identical information in one context and disabling one to retain the information in a next context
First Claim
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1. A speech recognition system comprising:
- a microphone;
an analog-to-digital converter for producing a digital signal representative of speech to be processed and a context signal indicating that the digital signal is available for processing; and
a digital processing device havinga processor for executing digital signal processing operations in alternative processing contexts identified by a state of said context signal; and
a speech recognition processor connected to said processor for executing speech recognition operations in response to the digital signal processing operations;
said processor including;
a plurality of register sets, each of said register sets having a first and second register, said first and second registers connected to concurrently store identical information during one of the processing contexts, said first register connected to individually participate and be continuously available in a next of the processing contexts when said first register is selected thereby enabling the second register to retain said information from said one processing context; and
a context switching circuit responsive to the state of said context signal and connected to said first and second registers to alternatively control input and output operations of said register set and to from said processor depending on the processing context.
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Abstract
A speech recognition system includes an electronic processor responsive to a context signal and operable in alternative processing contexts identified by the context signal. First and second registers are connected to the electronic processor to participate in one processing context while retaining information from another processing context until a return thereto. A context switching circuit is connected to the first and second registers and operates to selectively control input and output operations of the registers to and from the electronic processor depending on the processing context. Other devices, systems and methods are also disclosed.
170 Citations
9 Claims
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1. A speech recognition system comprising:
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a microphone; an analog-to-digital converter for producing a digital signal representative of speech to be processed and a context signal indicating that the digital signal is available for processing; and a digital processing device having a processor for executing digital signal processing operations in alternative processing contexts identified by a state of said context signal; and a speech recognition processor connected to said processor for executing speech recognition operations in response to the digital signal processing operations; said processor including; a plurality of register sets, each of said register sets having a first and second register, said first and second registers connected to concurrently store identical information during one of the processing contexts, said first register connected to individually participate and be continuously available in a next of the processing contexts when said first register is selected thereby enabling the second register to retain said information from said one processing context; and a context switching circuit responsive to the state of said context signal and connected to said first and second registers to alternatively control input and output operations of said register set and to from said processor depending on the processing context. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification