User authentication method using ultrasonic waves
AssigneeMuzlive Inc.
InventorJong Sung Park
Life of this patent
Estimating the term…
Abstract
A user authentication method using ultrasonic waves is disclosed. The user authentication method using ultrasonic waves, according to an embodiment of the present invention, comprises the steps of: receiving a sound wave signal which includes analog data; sampling the sound wave signal at a preset sampling rate; generating a block by selecting a preset number of pieces of sampling data; converting sampled data included in the block into frequency components; and determining, as digital data in the block, a letter or number corresponding to the frequency component having the largest magnitude from among the frequency components.
Claims6
A user authentication method using ultrasonic waves, the user authentication method comprising:
- receiving a sound wave signal, which is analog data;
- sampling the sound wave signal at a preset sampling rate;
- generating a block having a plurality of frequency components by selecting a preset number of pieces of sampling data;
- converting the sampling data included in the block into the plurality of frequency components and calculating an amplitude of each frequency component;
- and
- confirming a letter or number corresponding to a frequency component with the largest amplitude among the plurality of frequency components as digital data in the block.
Dependencies are inferred from the claim text.