Distributed Speech Recognition Using One Way Communication

• US 20140163974A1
• Filed: 08/02/2013
• Published: 06/12/2014
• Est. Priority Date: 08/29/2008
• Status: Abandoned Application

• Current Assignee: MModal IP LLC (3M Company)
• Original Assignee: MModal IP LLC (3M Company)
• Inventors: Carraux, Eric, Koll, Detlef
• Application Number:
  US13/957,684
• Publication Number:
  US 20140163974A1
• Time in Patent Office: Days
• US Class Current: 704/231
• CPC Class Codes: G10L 15/22 Procedures used during a speech recognition process, e.g. man-machine dialogue
• CPC Class Codes: G10L 15/30 Distributed recognition, e.g. in client-server systems, for mobile phones or network applications
• CPC Class Codes: G10L 15/32 Multiple recognisers used in sequence or in parallel; Score combination systems therefor, e.g. voting systems

Abstract

A speech recognition client sends a speech stream and control stream in parallel to a server-side speech recognizer over a network. The network may be an unreliable, low-latency network. The server-side speech recognizer recognizes the speech stream continuously. The speech recognition client receives recognition results from the server-side recognizer in response to requests from the client. The client may remotely reconfigure the state of the server-side recognizer during recognition.

Claims

2. A computer-implemented method comprising:

(A) at a speech recognition server;

(A)(1) receiving a speech stream and a control stream from a client;

(A)(2) using an automatic speech recognition engine in a first configuration state to recognize a first portion of the speech stream and thereby to produce a first speech recognition result;

(B) at the speech recognition server,

(B)(1) analyzing a first control message in the control stream to determine whether the first speech recognition result satisfies a first predetermined criterion specified by the control stream;

(B)(2) waiting until the automation speech recognition engine has been reconfigured before continuing to (C); and

(C) at the speech recognition server, responsive to receiving a second control message, using the automatic speech recognition engine in a second configuration state to recognize a second portion of the speech stream and thereby to produce a second speech recognition result.