Patents by Inventor Mathys C. Walma

Mathys C. Walma 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).

  • Publication number: 20140253295
    Abstract: Examples are disclosed for a mobile device to wirelessly dock to a device. In some examples, a mobile device may receive an indication to identify a device for wirelessly docking. The mobile device may gather identification for possible devices to wirelessly dock. A ranging technique may be implemented using a given frequency band to identify a device within a shortest distance from the mobile device from among the possible devices. The device having the shortest distance may be selected and a wireless dock may then be established. Other examples are described and claimed.
    Type: Application
    Filed: March 11, 2013
    Publication date: September 11, 2014
    Inventors: RICHARD D. ROBERTS, MATHYS C. WALMA, CARLOS CORDEIRO
  • Publication number: 20140093234
    Abstract: A light transmitter transmits multiple light packets, each formatted to include a same message comprising a series of bits, each bit represented as light that is intensity modulated over a bit period at a frequency indicative of the bit. The light packets are transmitted at different start-times to establish different phases, one for each of the light packets, to permit a light receiver to sample each message at a different phase of a fixed sample timeline that is asynchronous to the bit period and the frequency. The light receiver samples the multiple light packets based on the sample timeline, to sample each received message at one of the different sample phases, then constructs a best series of bits based on the multiple demodulated messages.
    Type: Application
    Filed: September 28, 2012
    Publication date: April 3, 2014
    Inventors: Richard D. Roberts, Mathys C. Walma, Praveen Gopalakrishnan
  • Publication number: 20140086587
    Abstract: A light array includes lights that transmit modulated light to indicate their unique light identifiers (IDs) and lights that transmit unmodulated light. A light receiver records images of the light array and recovers the light IDs from the modulated light. The light receiver uses the IDs to retrieve a light map representative of the light array. The receiver aligns the retrieved light map with the recorded images of the light array, and accesses real-world positions of all of the light in the light array, as deployed, based on the aligned light map.
    Type: Application
    Filed: September 24, 2012
    Publication date: March 27, 2014
    Inventors: Richard D. Roberts, Jing Zhu, Mathys C. Walma
  • Publication number: 20140006907
    Abstract: Embodiments may communicate via an electromagnetic radiator, or light source, that can be amplitude modulated such as light emitting diode lighting via receivers that can determine data from light received from the radiator. Some embodiments decode data of a packet transmitted from modulated lighting by means of a device with a low sampling frequency such as a relatively inexpensive camera. Many embodiments determine locations of start frame delimiters in packets. Several embodiments implement repeat decoding on packets of the same data to reduce packet error rates. Some embodiments are intended for indoor navigation via photogrammetry using self-identifying light anchors. In many embodiments, the data signal may be communicated via the light source at frequencies causing flicker that is not perceivable to the human eye.
    Type: Application
    Filed: June 30, 2012
    Publication date: January 2, 2014
    Inventors: Richard D. Roberts, Praveen Gopalakrishnan, Mathys C. Walma, Lei T. Yang
  • Publication number: 20140003817
    Abstract: A Multiple-Input-Multiple-Output (MIMO) data transmit-receive protocol that can be used with an arbitrary light array, including one or more lights, that transmits light to a light receiver having an image sensor, including a large number of light sensing pixels. The protocol supports two primary protocol or coding modes in which the light array may transmit: spatial coding and space-time coding. The protocol is constructed upon the use of efficient start-frame-delimiters (SFDs) and data-delimiters (DDs). The lights may be implemented to transmit the SFDs, the data delimiters, and data bits as modulated light. The light may be modulated in accordance with a modulation technique referred to as frequency shift on-off keying (FSOOK).
    Type: Application
    Filed: June 29, 2012
    Publication date: January 2, 2014
    Inventors: Richard D. Roberts, Jing Zhu, Mathys C. Walma
  • Publication number: 20140003823
    Abstract: Embodiments may provide a way of communicating via an electromagnetic radiator, or light source, that can be amplitude modulated such as light emitting diode (LED) lighting and receivers or detectors that can determine data from light received from the amplitude modulated electromagnetic radiator. Some embodiments may provide a waveform in the form of chips at a chipping clock frequency that switch a light source between on and off states to communicate via light sources that can be amplitude modulated such as LED lighting. Some embodiments may provide a method of transmitting the waveform via modulated LED lighting. Some embodiments are intended for indoor navigation via photogrammetry (i.e., image processing) using self-identifying LED light anchors. In many embodiments, the data signal may be communicated via the light source at amplitude modulating frequencies such that the resulting flicker is not perceivable to the human eye.
    Type: Application
    Filed: June 30, 2012
    Publication date: January 2, 2014
    Inventors: Richard D. Roberts, Praveen Gopalakrishnan, Mathys C. Walma