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).
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Patent number: 9357457Abstract: 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: GrantFiled: January 9, 2014Date of Patent: May 31, 2016Assignee: Marvell International Ltd.Inventors: Manfred Kunz, Joachim Schmalz
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Patent number: 9124249Abstract: 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: GrantFiled: May 12, 2014Date of Patent: September 1, 2015Assignee: MARVELL INTERNATIONAL LTD.Inventors: Joachim Schmalz, Olaf Mater
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Patent number: 9066246Abstract: 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: GrantFiled: January 7, 2013Date of Patent: June 23, 2015Assignee: Marvell International Ltd.Inventors: Joachim Schmalz, Manfred Kunz
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Patent number: 8989147Abstract: 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: GrantFiled: January 10, 2014Date of Patent: March 24, 2015Assignee: Marvell International Ltd.Inventors: Olaf Mater, Joachim Schmalz
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Patent number: 8934340Abstract: 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: GrantFiled: July 18, 2013Date of Patent: January 13, 2015Assignee: Marvell International Ltd.Inventors: Olaf Mater, Joachim Schmalz
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Patent number: 8725142Abstract: 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: GrantFiled: October 29, 2007Date of Patent: May 13, 2014Assignee: Marvell International Ltd.Inventors: Joachim Schmalz, Olaf Mater
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Patent number: 8717881Abstract: 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: GrantFiled: October 18, 2012Date of Patent: May 6, 2014Assignee: Marvell International Ltd.Inventors: Joachim Schmalz, Olaf Mater
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Patent number: 8630255Abstract: 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: GrantFiled: September 17, 2007Date of Patent: January 14, 2014Assignee: Marvell International Ltd.Inventors: Manfred Kunz, Joachim Schmalz
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Patent number: 8630277Abstract: 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: GrantFiled: March 23, 2012Date of Patent: January 14, 2014Assignee: Marvell International Ltd.Inventors: Olaf Mater, Joachim Schmalz
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Patent number: 8493864Abstract: 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: GrantFiled: May 2, 2011Date of Patent: July 23, 2013Assignee: Marvell International Ltd.Inventors: Olaf Mater, Joachim Schmalz
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Patent number: 8351343Abstract: 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: GrantFiled: March 7, 2008Date of Patent: January 8, 2013Assignee: Marvell International Ltd.Inventors: Joachim Schmalz, Manfred Kunz
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Patent number: 8295163Abstract: 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: GrantFiled: November 7, 2008Date of Patent: October 23, 2012Assignee: Marvell International Ltd.Inventors: Joachim Schmalz, Olaf Mater
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Patent number: 8155081Abstract: 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: GrantFiled: May 21, 2008Date of Patent: April 10, 2012Assignee: Marvell International Ltd.Inventors: Olaf Mater, Joachim Schmalz
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Patent number: 8089939Abstract: 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: GrantFiled: May 16, 2008Date of Patent: January 3, 2012Assignee: Marvell International Ltd.Inventors: Olaf Mater, Joachim Schmalz
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Patent number: 7936671Abstract: 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: GrantFiled: October 29, 2008Date of Patent: May 3, 2011Assignee: Marvell International Ltd.Inventors: Olaf Mater, Joachim Schmalz
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Patent number: 7920536Abstract: 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: GrantFiled: October 18, 2007Date of Patent: April 5, 2011Assignee: Marvell International Ltd.Inventors: Manfred Kunz, Joachim Schmalz
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Patent number: 7881185Abstract: 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: GrantFiled: May 1, 2009Date of Patent: February 1, 2011Assignee: Marvell International Ltd.Inventors: Michael Karl, Thomas Ruf, Manfred Kunz, Joachim Schmalz
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Patent number: 7529180Abstract: 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: GrantFiled: February 4, 2003Date of Patent: May 5, 2009Assignee: Marvell International Ltd.Inventors: Michael Karl, Thomas Ruf, Manfred Kunz, Joachim Schmalz
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Patent number: 7080172Abstract: 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: GrantFiled: May 27, 2003Date of Patent: July 18, 2006Assignee: Marvell Luternational Ltd.Inventor: Joachim Schmalz
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Patent number: 5014885Abstract: 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: GrantFiled: December 6, 1988Date of Patent: May 14, 1991Assignee: Waeschle Maschinenfabrik GmbHInventors: Dieter Heep, Paul Vogel, Manfred Frey, Joachim Schmalz