Patents by Inventor Joachim Schmalz

Joachim Schmalz 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: 9357457
    Abstract: A wireless device for wireless communication in a wireless area network. The wireless device includes a main radio channel for exchanging data with an access point in the wireless area network, as well as an auxiliary radio channel for scanning for availability of other access points in the wireless area network.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: May 31, 2016
    Assignee: Marvell International Ltd.
    Inventors: Manfred Kunz, Joachim Schmalz
  • Patent number: 9124249
    Abstract: A receiver is tuned to a first channel in a plurality of channels, and at least one beacon signal from at least one other channel is received while the receiver is tuned to the first channel. The at least one other channel is determined to be active based on the at least one beacon signal received while the receiver is tuned to the first channel. A channel that is determined to be “active” may be, for example, a communication channel on which an access point in a communication network is communicating or is able to communicate.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: September 1, 2015
    Assignee: MARVELL INTERNATIONAL LTD.
    Inventors: Joachim Schmalz, Olaf Mater
  • Patent number: 9066246
    Abstract: A data recognition system for a wireless device that includes a storage module that stores a first hash value and a processing module that generates a second hash value based on an incoming data stream received by the wireless device and detects a change in the incoming data stream based on a comparison between the first hash value with the second hash value.
    Type: Grant
    Filed: January 7, 2013
    Date of Patent: June 23, 2015
    Assignee: Marvell International Ltd.
    Inventors: Joachim Schmalz, Manfred Kunz
  • Patent number: 8989147
    Abstract: A self learning roaming optimization approach allows a wireless client device to build signal strength maps that store wireless network access point signal strengths at locations along paths traveled by the wireless client device within an operational environment. The signal strengths collected at locations along a path may be analyzed to determine a recommended wireless network access point at the respective locations to achieve a reliable wireless network connection along the mapped path. The stored recommendations may take into account changes in wireless network access point signal strengths, e.g. due to obstructions and/or electromagnetic shields that may block portions of a wireless network access point signal at subsequent locations along the mapped path.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: March 24, 2015
    Assignee: Marvell International Ltd.
    Inventors: Olaf Mater, Joachim Schmalz
  • Patent number: 8934340
    Abstract: A switch includes a connector, a port, and an indicator. The connector is configured to connect via a cable to a computer. The port is attached to the connector. While the connector is connected to the computer via the cable, the port is configured to: transmit a command signal from the switch to the computer via the cable, wherein the command signal requests identification of the port; and detect a response to the command signal as received from the computer. The indicator is connected to the port. The indicator is configured to identify the port based on an alternating pattern of the response to the command signal.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: January 13, 2015
    Assignee: Marvell International Ltd.
    Inventors: Olaf Mater, Joachim Schmalz
  • Patent number: 8725142
    Abstract: A receiver is tuned to a first channel in a plurality of channels, and at least one beacon signal from at least one other channel is received while the receiver is tuned to the first channel. The at least one other channel is determined to be active based on the at least one beacon signal received while the receiver is tuned to the first channel. A channel that is determined to be “active” may be, for example, a communication channel on which an access point in a communication network is communicating or is able to communicate.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: May 13, 2014
    Assignee: Marvell International Ltd.
    Inventors: Joachim Schmalz, Olaf Mater
  • Patent number: 8717881
    Abstract: Devices, systems, methods, and other embodiments associated assigning signals to cable channels are described. One example device includes a networking device that includes a transceiver to connect to a cable and communicate signal over the cable to a remote terminal. The cable can include two or more cable channels to carry signals. If a cable channel fails to operate, a switching logic reassigns signals initially carried on the failed cable channel to another cable channel.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: May 6, 2014
    Assignee: Marvell International Ltd.
    Inventors: Joachim Schmalz, Olaf Mater
  • Patent number: 8630255
    Abstract: A wireless device for wireless communication in a wireless area network. The wireless device includes a main radio channel for exchanging data with an access point in the wireless area network, as well as an auxiliary radio channel for scanning for availability of other access points in the wireless area network.
    Type: Grant
    Filed: September 17, 2007
    Date of Patent: January 14, 2014
    Assignee: Marvell International Ltd.
    Inventors: Manfred Kunz, Joachim Schmalz
  • Patent number: 8630277
    Abstract: A self learning roaming optimization approach allows a wireless client device to build signal strength maps that store wireless network access point signal strengths at locations along paths traveled by the wireless client device within an operational environment. The signal strengths collected at locations along a path may be analyzed to determine a recommended wireless network access point at the respective locations to achieve a reliable wireless network connection along the mapped path. The stored recommendations may take into account changes in wireless network access point signal strengths, e.g. due to obstructions and/or electromagnetic shields that may block portions of a wireless network access point signal at subsequent locations along the mapped path.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: January 14, 2014
    Assignee: Marvell International Ltd.
    Inventors: Olaf Mater, Joachim Schmalz
  • Patent number: 8493864
    Abstract: An apparatus including: a first port configured to receive a first end of a cable to provide a communication link between (i) the first port, and (ii) a second port coupled to a second end of the cable. The apparatus further includes a processor configured to, during a time that the first end of the cable is coupled to the first port and the second end of the cable is coupled to the second port, (i) receive a command to identify the second port to which the second end of the cable is coupled, and (ii) in response to the command, repeatedly change the state of the communication link at the first port in accordance with a pattern.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: July 23, 2013
    Assignee: Marvell International Ltd.
    Inventors: Olaf Mater, Joachim Schmalz
  • Patent number: 8351343
    Abstract: A data recognition system for a wireless device that includes a storage module that stores a first hash value and a processing module that generates a second hash value based on an incoming data stream received by the wireless device and detects a change in the incoming data stream based on a comparison between the first hash value with the second hash value.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: January 8, 2013
    Assignee: Marvell International Ltd.
    Inventors: Joachim Schmalz, Manfred Kunz
  • Patent number: 8295163
    Abstract: Devices, systems, methods, and other embodiments associated assigning signals to cable channels are described. One example device includes a networking device that includes a transceiver to connect to a cable and communicate signal over the cable to a remote terminal. The cable can include two or more cable channels to carry signals. If a cable channel fails to operate, a switching logic reassigns signals initially carried on the failed cable channel to another cable channel.
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: October 23, 2012
    Assignee: Marvell International Ltd.
    Inventors: Joachim Schmalz, Olaf Mater
  • Patent number: 8155081
    Abstract: A self learning roaming optimization approach allows a wireless client device to build signal strength maps that store wireless network access point signal strengths at locations along paths traveled by the wireless client device within an operational environment. The signal strengths collected at locations along a path may be analyzed to determine a recommended wireless network access point at the respective locations to achieve a reliable wireless network connection along the mapped path. The stored recommendations may take into account changes in wireless network access point signal strengths, e.g. due to obstructions and/or electromagnetic shields that may block portions of a wireless network access point signal at subsequent locations along the mapped path.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: April 10, 2012
    Assignee: Marvell International Ltd.
    Inventors: Olaf Mater, Joachim Schmalz
  • Patent number: 8089939
    Abstract: The present disclosure provides for a user equipment (UE) for use in a wireless computer network that has multiple wireless access points (APs). The UE can include a wireless transceiver that communicates with the computer network, a link quality assessor that assesses the quality of the communication link between the wireless transceiver and the first selected wireless AP, a link quality forecaster that forecasts a predicted future quality of the communication link as a function of the past quality of the communication link, and an AP switching module that 1) initiates an AP link quality scan to determine a second selected AP when the forecasted link quality falls below a first link quality threshold and 2) switches to the second selected wireless AP when the forecasted link quality falls below a second link quality threshold.
    Type: Grant
    Filed: May 16, 2008
    Date of Patent: January 3, 2012
    Assignee: Marvell International Ltd.
    Inventors: Olaf Mater, Joachim Schmalz
  • Patent number: 7936671
    Abstract: Methods having corresponding apparatus and computer programs comprise: receiving a command to identify a connected port at a far end of a cable providing a communication link; and changing a state of the communication link at a near end of the cable according to a repeating pattern in response to the command.
    Type: Grant
    Filed: October 29, 2008
    Date of Patent: May 3, 2011
    Assignee: Marvell International Ltd.
    Inventors: Olaf Mater, Joachim Schmalz
  • Patent number: 7920536
    Abstract: In a wireless network having one or more base stations and one or more access points, the base station is switched automatically from a CSMA/CA exchange protocol to an RTS/CTS exchange protocol, in a case where the base station infers the presence of a hidden node. The presence of a hidden node is inferred by scanning frames of wireless network transmissions to and from other base stations and the access point. In a case where there is a discrepancy in the accrued frames, such that frames have been accrued from the access point to a second base station without also accruing frames from the second base station back to the access point, the presence of a hidden node is inferred, and the base station is switched automatically to RTS/CTS exchange mode.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: April 5, 2011
    Assignee: Marvell International Ltd.
    Inventors: Manfred Kunz, Joachim Schmalz
  • Patent number: 7881185
    Abstract: A network device includes a first plurality of ports and a first plurality of communication links. Each port of the first plurality of ports communicates with a corresponding communication link of the first plurality of communication links. An adapter aggregates the first plurality communication links into a second plurality of aggregated links. The adaptor assigns a single media access control address to each aggregated link of the second plurality of aggregated links. A driver selects a first aggregated link of the second plurality of aggregated links as an active link based on a link quality of the first aggregated link. The driver sends and receives data over the first aggregated link using the single media access control address assigned to the first aggregated link. The driver selects a second aggregated link of the second plurality of aggregated links as the active link in response to the link quality of the first aggregated link being less than a link quality of the second aggregated link.
    Type: Grant
    Filed: May 1, 2009
    Date of Patent: February 1, 2011
    Assignee: Marvell International Ltd.
    Inventors: Michael Karl, Thomas Ruf, Manfred Kunz, Joachim Schmalz
  • Patent number: 7529180
    Abstract: A network device, method and computer program product for communicating data over aggregated links, wherein each of the aggregated links comprises a plurality of data communication links. The network device comprises n ports; and a processor to determine a link quality for each of m of the aggregated links, wherein m?2, wherein each of the m aggregated links comprises a preselected plurality p of the n ports, select one of the m aggregated links based on the link quality determined for each of the m aggregated links, and send the data over the selected one of the m aggregated links.
    Type: Grant
    Filed: February 4, 2003
    Date of Patent: May 5, 2009
    Assignee: Marvell International Ltd.
    Inventors: Michael Karl, Thomas Ruf, Manfred Kunz, Joachim Schmalz
  • Patent number: 7080172
    Abstract: Managing memory allocations and de-allocations with a stack, and managing hardware initializations and de-initializations with another stack. A stack may store de-allocate information. Another stack may store de-initialization information. The techniques may be applied to allocating/de-allocating memory for parts of a device driver, initializing/de-initializing parts of hardware, and initializing/de-initializing parts of software.
    Type: Grant
    Filed: May 27, 2003
    Date of Patent: July 18, 2006
    Assignee: Marvell Luternational Ltd.
    Inventor: Joachim Schmalz
  • Patent number: 5014885
    Abstract: An apparatus for feeding bulk material includes a rotor with a plurality of radially extending vanes which are supported on a hollow shaft and are provided with sealing strips at their end faces. Shiftable within the shaft is an adjusting bar with at least two axially spaced conical surfaces which cooperate with push rods having one end bearing against the conical surfaces and another end in force-locking connection with the sealing strips. The adjusting bar is acted upon by a force-applying unit which subjects the adjusting bar to a constant axial holding force which is independent of the axial displacement of the adjusting bar so that a sufficient contact pressure is continuously maintained by which the sealing strips are urged against the housing.
    Type: Grant
    Filed: December 6, 1988
    Date of Patent: May 14, 1991
    Assignee: Waeschle Maschinenfabrik GmbH
    Inventors: Dieter Heep, Paul Vogel, Manfred Frey, Joachim Schmalz