Patents by Inventor Jacobus Cornelis Haartsen

Jacobus Cornelis Haartsen 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).

  • Patent number: 8024013
    Abstract: Various methods and associated wireless communication mobile terminals are provided that repetitively switch power on and off to a RF transmitter and/or to a RF transceiver, and that regulate the power duty cycle in response to movement of the associated communication terminal. Movement of the communication terminal may be sensed in response to an acceleration signal from an accelerometer, a position signal from a GPS receiver, a light level signal from an ambient light sensor, and/or a pressure level signal from a pressure sensor.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: September 20, 2011
    Assignee: Sony Ericsson Mobile Communications AB
    Inventor: Jacobus Cornelis Haartsen
  • Patent number: 8018885
    Abstract: A device may include logic to enter a power savings mode and wirelessly transmit a first synchronization packet to a remote device within a first transmission time slot in a first power savings cycle, the first synchronization packet including a code that is a member of a set consisting of a predetermined number of codes. In addition, the logic may be configured to sleep after transmitting the first synchronization packet to save energy, awake at a first receive time slot in the first power savings cycle, and receive a reply synchronization packet, the reply synchronization packet including a code is that is a member of the set from the remote device. The logic may be further configured to sleep until a start of a second power savings cycle that follows the first power savings cycle to save energy.
    Type: Grant
    Filed: February 4, 2008
    Date of Patent: September 13, 2011
    Assignee: Sony Ericsson Mobile Communications AB
    Inventor: Jacobus Cornelis Haartsen
  • Publication number: 20110213263
    Abstract: A method for determining a heartbeat rate of a user from an acoustic heartbeat signal, a heartbeat rate measuring device, and a mobile device are described.
    Type: Application
    Filed: February 26, 2010
    Publication date: September 1, 2011
    Applicant: SONY ERICSSON MOBILE COMMUNICATIONS AB
    Inventor: Jacobus Cornelis Haartsen
  • Patent number: 8005439
    Abstract: An entire radio transceiver can be completely integrated into one IC chip. In order to integrate the IF filters on the chip, a heterodyne architecture with a low IF is used. A single, directly modulated VCO is used for both up-conversion during transmission, and down-conversion during reception. Bond-wires are used as resonators in the oscillator tank for the VCO. A TDD scheme is used in the air interface to eliminate cross-talk or leakage. A Gaussian-shaped binary FSK modulation scheme is used to provide a number of other implementation advantages.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: August 23, 2011
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Karl Hakan Torbjorn Gardenfors, Sven Mattisson, Jacobus Cornelis Haartsen
  • Patent number: 8005431
    Abstract: Some embodiments of the present invention are directed to methods of operating communication terminals. A wireless communication link is established between first and second communication terminals and communication signals are exchanged therebetween. The first communication terminal is controlled to continue over time to increase a power level at which it transmits communication signals to the second communication terminal in response to detecting loss of the wireless communication link and while continuing attempts to reestablish the communication link with the second communication terminal. The first communication terminal is further controlled, in response to detecting loss of the communication link, to increase a level of attenuation that it applies to communication signals from the second communication terminal, and to then more gradually decrease the level of attenuation over time in response to continuing attempts to reestablish the communication link with the second communication terminal.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: August 23, 2011
    Assignee: Sony Ericsson Mobile Communications AB
    Inventors: Jacobus Cornelis Haartsen, Franciscus Nicolaas Martinus Hooijschuur
  • Patent number: 7973711
    Abstract: Methods of operating a satellite navigation system (SNS) receiver in a portable electronic device according to some embodiments include determining the presence or absence of a low frequency signal associated with power distribution lines, and disabling the SNS receiver in response to detecting the low frequency signal associated with power distribution lines. The methods may further include detecting weakening of a satellite navigation signal, and determining the presence or absence of a low frequency signal associated with power distribution lines may be performed in response to a detected weakening of the satellite navigation signal. Related devices are also disclosed.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: July 5, 2011
    Assignee: Sony Ericsson Mobile Communications AB
    Inventors: Jacobus Cornelis Haartsen, Frank Hooijschuur, William O. Camp, Jr., Charles Liu
  • Publication number: 20110142156
    Abstract: A system includes a transmitter device that includes a transmitter baseband controller to segment a bit stream into a first segment, a second segment, and a third segment, and generate a first baseband signal that includes the first segment, a second baseband signal that includes the second segment, and a third baseband signal that includes the third segment; and a radio frequency (RF) transmitter to generate a multi-frequency signal based on the first baseband signal, the second baseband signal, and the third baseband signal; and a receiver device that includes an RF receiver to receive the multi-frequency signal, and retrieve the first baseband signal, the second baseband signal, and the third baseband signal from the received multi-frequency signal; and a receiver baseband control to reassemble the bit stream from the received first baseband signal, the received second baseband signal, and the received third baseband signal.
    Type: Application
    Filed: December 15, 2009
    Publication date: June 16, 2011
    Applicant: SONY ERICSSON MOBILE COMMUNICATIONS AB
    Inventor: Jacobus Cornelis HAARTSEN
  • Patent number: 7957702
    Abstract: A transceiver is operated in a cellular communications system, wherein the transceiver has a variable transmitter output power that spans a range of power levels comprising a low-power domain and a high-power domain. Operation includes determining whether the transmitter output power of the transceiver is in the low-power domain or the high-power domain. If the transmitter output power of the transceiver is in the low-power domain, then transceiver operation is initiated in a full-duplex mode in which transmitted and received signals pass through a duplexer associated with a transceiver antenna. If the transmitter output power of the transceiver is in the high-power domain, then transceiver operation is initiated in a half-duplex mode and bypassing the duplexer.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: June 7, 2011
    Inventors: Jacobus Cornelis Haartsen, William Camp
  • Publication number: 20110110358
    Abstract: A source communication device includes a source network clock to control timing of communicating with other devices in a network, a source streaming clock associated with processing of audio or video data, a time stamp generator to generate a time stamp that includes a source network clock value and a source streaming clock value, and a time stamp insertion mechanism that incorporates the time stamp into a data unit that is to be transmitted to one of the other devices in the network. A sink communication device includes a sink network clock synchronized with the source network clock, a sink streaming clock associated with processing of audio or video data, and a sink time stamp mechanism to compare a sink streaming clock value with the source streaming clock value, and adjust the sink streaming clock based on the comparison.
    Type: Application
    Filed: November 12, 2009
    Publication date: May 12, 2011
    Applicant: SONY ERICSSON MOBILE COMMUNICATIONS AB
    Inventors: Jacobus Cornelis HAARTSEN, Geert Hendrik WEINANS, Dick DE JONG
  • Publication number: 20110092160
    Abstract: A mobile communication device comprises a base unit and a headset in the form of a small, inconspicuous earpiece. The base unit includes a fully functional cellular transceiver and can transmit audio signals over a low power, unidirectional radio link to the headset. The headset unit comprises a unidirectional receiver for receiving audio signals from the base unit and an earphone for converting the audio signals into audible sounds that can be heard by the user.
    Type: Application
    Filed: October 20, 2009
    Publication date: April 21, 2011
    Applicant: Sony Ericsson Mobile Communications AB
    Inventors: William O. Camp, JR., Jacobus Cornelis Haartsen
  • Publication number: 20110087449
    Abstract: A method of calibrating a first clock signal using a second clock signal and a plurality of calibration periods may include generating incremented counter values at a counter responsive to edges of the second clock signal. For at least two of the plurality of calibration periods, an initial incremented counter value from the counter may be stored in memory at an initial edge of the first clock signal for the respective calibration period, a final incremented counter value may be stored in memory at a final edge of the clock signal for the respective calibration period, and the at least two of the plurality of calibration periods may be overlapping with different initial and final edges of the first clock signal. For each of the plurality of calibration periods, a number of edges of the second clock signal occurring during the respective calibration period may be determined using the initial and final incremented counter values stored in memory.
    Type: Application
    Filed: December 17, 2010
    Publication date: April 14, 2011
    Inventors: Jacobus Cornelis Haartsen, Aalbert Stek
  • Patent number: 7881895
    Abstract: A method of calibrating a first clock signal using a second clock signal and a plurality of calibration periods may include generating incremented counter values at a counter responsive to edges of the second clock signal. For at least two of the plurality of calibration periods, an initial incremented counter value from the counter may be stored in memory at an initial edge of the first clock signal for the respective calibration period, a final incremented counter value may be stored in memory at a final edge of the clock signal for the respective calibration period, and the at least two of the plurality of calibration periods may be overlapping with different initial and final edges of the first clock signal. For each of the plurality of calibration periods, a number of edges of the second clock signal occurring during the respective calibration period may be determined using the initial and final incremented counter values stored in memory.
    Type: Grant
    Filed: May 27, 2008
    Date of Patent: February 1, 2011
    Assignee: Sony Ericsson Mobile Communications AB
    Inventors: Jacobus Cornelis Haartsen, Aalbert Stek
  • Publication number: 20110009059
    Abstract: A radio system includes a server connected to a network, at least one bi-directional radio connected to the network and at least one uni-directional radio not connected to the at least one bi-directional radio and not connected to the server. A mobile device is configured to receive data from at least one uni-directional radio and communicate with at least one bi-directional radio.
    Type: Application
    Filed: November 12, 2009
    Publication date: January 13, 2011
    Applicant: Sony Ericsson Mobile Communications AB
    Inventors: William O. Camp, JR., Jacobus Cornelis Haartsen
  • Publication number: 20110007781
    Abstract: A radio system may include a receiver configured for processing a received signal via a first path and a second path, wherein the first path may include a uni-directional radio receiver path and wherein the second path comprises a path that constitutes a receiver for a bi-directional radio. The first path and the second path may share one or more radio hardware components or may be separated components.
    Type: Application
    Filed: November 12, 2009
    Publication date: January 13, 2011
    Applicant: SONY ERICSSON MOBILE COMMUNICATIONS AB
    Inventors: William O. Camp, Jr., Jacobus Cornelis Haartsen
  • Patent number: 7848446
    Abstract: A single-carrier signal is generated from a number, N, of symbols in a way that results in a low PAPR. This includes generating an initial set of N complex frequency components from the N symbols. Ns different sets of N complex frequency components are generated by, for each of Ns times, permuting the initial set of N complex frequency components by one of Ns possible permutations. Ns different sets of M complex frequency components are generated by mapping each of the Ns different sets of N complex frequency components onto a set of M carrier frequencies. After shaping, an IDFT generates a candidate set of N time-domain symbols from each of the Ns different sets of M complex frequency components. That one of the Ns different candidate sets of N time-domain symbols that is associated with the smallest PAPR is selected for further processing.
    Type: Grant
    Filed: March 12, 2007
    Date of Patent: December 7, 2010
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventor: Jacobus Cornelis Haartsen
  • Publication number: 20100303185
    Abstract: A method of operating a wireless communications device may include determining a wake-up time for a receiver using a low frequency clock. Beginning at the wake-up time, the receiver may listen for reception of a packet transmitted from a remote device over a wireless interface. An actual time of reception of the packet transmitted from the remote device may be detected, and a new wake-up time for the receiver may be determined using the low frequency clock and the actual time of reception of the packet.
    Type: Application
    Filed: June 2, 2009
    Publication date: December 2, 2010
    Inventor: Jacobus Cornelis Haartsen
  • Patent number: 7813296
    Abstract: A first transceiver in a packet-based communications system is operated to achieve efficiencies. The transceiver comprises a receiver and a transmitter for bidirectionally communicating with a second transceiver. In various embodiments, data and control traffic scheduling enables several unrelated items to be bundled during single transmission and/or reception instances. In one aspect, receiver operation involves receiving a first signal from the second transceiver, the first signal requiring that return link information be sent to the second transceiver. A period of time during which the first transceiver can begin a bundled transmission of the return link information and initiating link information that is unrelated to the information carried by the first signal is determined. The bundled transmission of the initiating and return link information is begun during the determined period of time.
    Type: Grant
    Filed: May 31, 2007
    Date of Patent: October 12, 2010
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Bengt Lindoff, Jacobus Cornelis Haartsen
  • Publication number: 20100232618
    Abstract: Embodiments include a method of communicating an audio stream from an audio source terminal to a plurality of speaker terminals. A broadcast channel is established for communication from an audio source terminal to a plurality of speaker terminals. A plurality of bidirectional point-to-point control channels are established for controlling wireless communications between the audio source terminal and the speaker terminals, where each of the point-to-point control channels interconnect the audio source terminal and a different one of the speaker terminals. An audio stream is transmitted as a sequence of blocks of audio data in messages from the audio source terminal through the broadcast channel for receipt by all of the speaker terminals. A quality of reception feedback message is received at the audio source terminal from individual ones of the speaker terminals through respective ones of the point-to-point control channels.
    Type: Application
    Filed: March 11, 2009
    Publication date: September 16, 2010
    Inventors: Jacobus Cornelis Haartsen, Dick de Jong
  • Publication number: 20100189269
    Abstract: An apparatus comprising at least one earpiece suitable to be applied at an auditory opening of a user's ear and a signal processor is disclosed. The earpiece comprises a speaker enabled to be supplied with an audio signal for rendering, and a microphone arranged in vicinity of the speaker arranged to acquire a sound signal. The signal processor is arranged to determine whether the earpiece is applied at the user's ear by analysis of the acquired sound signal, wherein the analysis is based on the acoustic coupling of the audio signal to the microphone. A method and a computer program are also disclosed.
    Type: Application
    Filed: January 23, 2009
    Publication date: July 29, 2010
    Applicant: SONY ERICSSON MOBILE COMMUNICATIONS AB
    Inventors: Jacobus Cornelis HAARTSEN, Gerrit SAMPIMON, Bart TRIP
  • Publication number: 20100189268
    Abstract: An apparatus comprising an earpiece and a signal processor is disclosed. The earpiece is suitable to be applied at an auditory opening of a user's ear. The earpiece comprises a speaker enabled to be supplied with an audio signal for rendering, and a microphone arranged in vicinity of the speaker to acquire a sound signal from sounds present inside the auditory opening when the earpiece is applied at the ear. The signal processor is arranged to determine whether the earpiece is applied at the user's ear by analysis of the acquired sound signal comprising any of a sound signal component of an in-ear sound type present when the earpiece is applied or an outside-ear sound type present when the earpiece is not applied. A method and a computer program are also disclosed.
    Type: Application
    Filed: January 23, 2009
    Publication date: July 29, 2010
    Applicant: SONY ERICSSON MOBILE COMMUNICATIONS AB
    Inventors: Jacobus Cornelis HAARTSEN, Gerrit SAMPIMON, Bart TRIP