公开(公告)号：US11094324B2

公开(公告)日：2021-08-17

申请号：US16412333

申请日：2019-05-14

Applicant: MOTOROLA MOBILITY LLC

Inventor： Zhengping Ji ,  Leo S. Woiceshyn ,  Karthik Mohan Kumar ,  Yi Wu

IPC: G10L15/22 ,  G10L15/30 ,  G10L15/08

Abstract: A method includes detecting a keyword within an audio stream. The keyword is one of multiple keywords in a database, in which each of the multiple keywords relates to at least one of multiple domains in the database. The database stores a first confidence weight for each of the multiple keywords that are related to a first domain among the multiple domains. Each first confidence weight indicates a probability that a corresponding keyword relates to the first domain. The method includes determining whether a first confidence weight of the keyword is at least equal to an activation threshold value associated with the first domain. The method includes, in response to the first confidence weight of the keyword meeting the activation threshold value, activating a DS-ASR engine corresponding with the first domain to perform speech-to-text conversion on the audio stream.

公开(公告)号：US11030994B2

公开(公告)日：2021-06-08

申请号：US16393720

申请日：2019-04-24

Applicant: MOTOROLA MOBILITY LLC

Inventor： Zhengping Ji ,  Leo S. Woiceshyn ,  Karthik Mohan Kumar ,  Yi Wu ,  Thomas Y. Merrell

IPC: G10L15/02 ,  G10L15/20 ,  G10L15/065

Abstract: A method and data processing device for detecting a communication between a first and second entity. The method includes identifying whether a previous communication between the first and second entity has been detected. In response to identifying that the previous communication between the first and second entity has been detected, the method determines an elapsed time since detection of the previous communication. The method predicts a topic of the communication, in part based on the determined elapsed time. The topic corresponds to a specific domain from among a plurality of available domains for automatic speech recognition (ASR) processing. The method triggers selection and activation of a first domain specific (DS) ASR engine from among a plurality of available DS ASR engines to utilize a smaller resource footprint than a general ASR engine and facilitate recognition of specific vocabulary and context, in part, based on the elapsed time since the previous communication.

公开(公告)号：US10887459B1

公开(公告)日：2021-01-05

申请号：US16514930

申请日：2019-07-17

Applicant: MOTOROLA MOBILITY LLC

Inventor： Jarrett K. Simerson ,  Leo S. Woiceshyn ,  Karthik Mohan Kumar ,  Yi Wu ,  Thomas Y. Merrell

IPC: H04M3/436

Abstract: A method, a communication device, and a computer program product for identifying a live phone call. The method includes receiving, at a first communication device, an activation of a verification mode for a phone call. The method includes receiving, from a second communication device on the phone call, first audio data associated with the phone call. The method further includes determining, via a processor of the first communication device, if the first audio data contains machine originated audio, and in response to determining that the first audio data does not contain machine originated audio, generating and outputting an alert that the phone call is live.