Estimating physiological parameters

US9955880B2 · kind B2 · utility

Assignee

• Tata Consultancy Services Limited · IN

Inventors

• Aishwarya Visvanathan · Bengaluru, IN
• Arpan Pal · Sherghati, IN
• Aniruddha Sinha · Narayanpur, IN
• Rohan Banerjee · Sherghati, IN
• Anirban Dutta Choudhury · Sherghati, IN
• Aditi Mishra · Sherghati, IN
• Avik Ghose · Sherghati, IN

Key dates

• Filing date: Mar 23, 2015
• Grant date: May 1, 2018
• Expiry date: Oct 17, 2036

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2560/0238
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A physiological parameter measurement device comprising a processor and a video processing module coupled to the processor to divide each of a plurality of frames of a video into a plurality of blocks, where the video is of a body part of a subject whose physiological parameter is to be determined. The video processing module further is to select a block having highest peak signal to noise ratio (PSNR) from amongst the plurality of blocks. Further, the video processing module is to extract a photoplethysmogram (PPG) signal from the video based on a block identifier associated with the block. The physiological parameter measurement device further comprises a signal enhancement module coupled to the processor, to process the PPG signal to obtain an enhanced PPG signal for determining a value of the physiological parameter for the subject.