Patents by Inventor Matias Javier ALMADA

Matias Javier ALMADA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Robust ultrasound communication signal format
    Patent number: 11316594
    Abstract: Methods and apparatus are described for ultrasound transmission. A bit packet is created from received data. A cyclic redundancy check (CRC) is added to the bit packet based on the input data. The bit packet is encoded with forward error correction. The encoded bit packet is block interleaved to create a bit stream. The bit stream is converted into symbols. Each symbol is mapped to a dual tone multi frequency (DTMF). A first audio buffer based upon the DTMF is created. The audio buffer is provided for output.
    Type: Grant
    Filed: June 8, 2018
    Date of Patent: April 26, 2022
    Assignee: Apple Inc.
    Inventors: Xintian E. Lin, Matias Javier Almada, Qinghua Li
  • Robust Ultrasound Communication Signal Format
    Publication number: 20200169327
    Abstract: Methods and apparatus are described for ultrasound transmission. A bit packet is created from received data. A cyclic redundancy check (CRC) is added to the bit packet based on the input data. The bit packet is encoded with forward error correction. The encoded bit packet is block interleaved to create a bit stream. The bit stream is converted into symbols. Each symbol is mapped to a dual tone multi frequency (DTMF). A first audio buffer based upon the DTMF is created. The audio buffer is provided for output.
    Type: Application
    Filed: June 8, 2018
    Publication date: May 28, 2020
    Inventors: Xintian E. LIN, Matias Javier ALMADA, Qinghua LI