The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 11, 2013
Filed:
Jan. 19, 2009
Patrick J. Bourke, Pittsburgh, PA (US);
Rob A. Rutenbar, Pittsburgh, PA (US);
Patrick J. Bourke, Pittsburgh, PA (US);
Rob A. Rutenbar, Pittsburgh, PA (US);
Other;
Abstract
The present invention relates to a low-power speech recognition system. In one embodiment, the speech recognition system is implemented in hardware and includes a backend search engine that operates to recognize words based on senone scores provided by an acoustic scoring stage. The backend search engine includes a scoring engine, a transition engine, and a language model engine. For a frame of sampled speech, the scoring engine reads active acoustic unit models from external memory, updates the active acoustic unit models based on corresponding senone scores received from an acoustic scoring stage, and writes the active acoustic unit models back to the external memory. The scoring engine enters a low-power state until processing for a next frame of sampled speech is to begin. The transition stage identifies any completed words, and the language model engine processes completed words to identify words that are likely to follow in a subsequent frame.