Patents by Inventor Christian Zechlin
Christian Zechlin 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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Method, apparatus or computer program for changing from scheduled to unscheduled communication modes
Patent number: 8711746Abstract: A method comprising: while in a first communication mode that uses scheduled communication, detecting when a number of packets communicated in an interval exceeds a threshold; and if the number of packets communicated in the interval exceeds the threshold, changing the communication mode from the first communication mode to a second communication mode that uses unscheduled communication and if the number of packets communicated in the interval does not exceed the threshold, remaining in the first communication mode.Type: GrantFiled: October 13, 2006Date of Patent: April 29, 2014Assignee: Nokia CorporationInventors: Christian Zechlin, Eugen Palnau -
Patent number: 8484394Abstract: In the case of a universal serial bus (USB) connection, a host detects a connection of a peripheral to the host via a USB interface of the host. The host then generates an informative command, which includes information on capabilities of the host. This informative command is provided for transmission via the USB interface to the peripheral. The peripheral receives the informative command and may for instance evaluate the included information for selecting a suitable USB mode that is to be entered or for deciding on becoming a host itself. Alternatively or in addition, the host may generate a request command for retrieving information on all classes offered in all USB modes of a peripheral.Type: GrantFiled: April 26, 2006Date of Patent: July 9, 2013Assignee: Nokia CorporationInventors: Michael Hubo, Thomas Block, Daniel Bencak, Christian Zechlin
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Patent number: 8374191Abstract: A method of allocating a communications channel to a data transfer session, the method including during the data transfer session: sending a first data transfer session packet via the communications channel then sending an additional packet or packets, that are not a part of the data transfer session, via the communications channel to hold the communications channel for the data transfer session.Type: GrantFiled: March 14, 2006Date of Patent: February 12, 2013Assignee: Nokia CorporationInventors: Christian Zechlin, Eugen Palnau
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Method, Apparatus or Computer Program for Changing From Scheduled to Unscheduled Communication Modes
Publication number: 20110032882Abstract: A method comprising: while in a first communication mode that uses scheduled communication, detecting when a number of packets communicated in an interval exceeds a threshold; and if the number of packets communicated in the interval exceeds the threshold, changing the communication mode from the first communication mode to a second communication mode that uses unscheduled communication and if the number of packets communicated in the interval does not exceed the threshold, remaining in the first communication mode.Type: ApplicationFiled: October 13, 2006Publication date: February 10, 2011Applicant: NOKIA CORPORATIONInventors: Christian Zechlin, Eugen Palnau -
Patent number: 7801202Abstract: A slave low power radio frequency transceiver participates in a network controlled by a master low power radio frequency transceiver and synchronises its timing to the network timing by receiving radio packets transmitted from the controlling low power radio frequency transceiver. The slave transceiver comprises timing means; detection means operable over an interval of time for detecting a predetermined portion of a received radio packet; and adjusting means for adjusting the timing means in response to the detection of a predetermined portion of a received radio packet. The slave low power radio frequency transceiver is arranged to controllably vary the duration of the interval of time.Type: GrantFiled: November 13, 2002Date of Patent: September 21, 2010Assignee: Nokia CorporationInventors: Thomas Block, Christian Zechlin, Dietmar Schnepp
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Publication number: 20100040041Abstract: A method involving: sending from a first apparatus to a second apparatus a first message identifying the first apparatus and a second message scheduling a time period for reply; receiving at the first apparatus during the time period scheduled by the second message a third message sent by the second apparatus; and in response to receiving the third message, changing a role of the first apparatus so that it is operable to schedule bi-directional data transfer between the first apparatus and the second apparatus.Type: ApplicationFiled: March 22, 2007Publication date: February 18, 2010Applicant: Nokia CorporatioinInventors: Christian Zechlin, Thomas Block
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Publication number: 20090303906Abstract: A method of allocating a communications channel to a data transfer session, the method including during the data transfer session: sending a first data transfer session packet via the communications channel then sending an additional packet or packets, that are not a part of the data transfer session, via the communications channel to hold the communications channel for the data transfer session.Type: ApplicationFiled: March 14, 2006Publication date: December 10, 2009Inventors: Christian Zechlin, Eugen Palnau
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Publication number: 20090300239Abstract: In the case of a universal serial bus (USB) connection, a host detects a connection of a peripheral to the host via a USB interface of the host. The host then generates an informative command, which includes information on capabilities of the host. This informative command is provided for transmission via the USB interface to the peripheral. The peripheral receives the informative command and may for instance evaluate the included information for selecting a suitable USB mode that is to be entered or for deciding on becoming a host itself. Alternatively or in addition, the host may generate a request command for retrieving information on all classes offered in all USB modes of a peripheral.Type: ApplicationFiled: April 26, 2006Publication date: December 3, 2009Inventors: Michael Hubo, Thomas Block, Daniel Bencak, Christian Zechlin
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Patent number: 7623828Abstract: Systems and methods are provided for communication between master and slave devices on a network, such as a piconet or Bluetooth network. A master notifies the slave of a change in the link supervision timeout associated with the piconet. The slave stores the new link supervision timeout value and uses this value to control subsequent network-related operations, such as inquiry and paging procedures within a scatternet. The slave, aware of the link supervision timeout value for its existing connection may set an activity time limit for procedures in order to return to the physical channel of the piconet before a timeout connection loss to reestablish contact with the piconet master.Type: GrantFiled: January 19, 2006Date of Patent: November 24, 2009Assignee: Nokia CorporationInventors: Thomas Block, Christian Zechlin
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Publication number: 20090276549Abstract: This invention relates to a method, a computer program product, a device, and a system for using one host controller by at least two host stacks and handling accesses to the host controller based on access rules.Type: ApplicationFiled: May 1, 2008Publication date: November 5, 2009Inventors: Christian Zechlin, Andre Gleichner
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Publication number: 20090038013Abstract: The present system may enhance security in device having a wireless interface while it is operating in a mode that may make it more vulnerable to predatory attacks. More specifically, the advent of certain development or support operating modes supported by particular wireless communication mediums, such as debug modes that allow other wireless devices to monitor messages coming and going from a wireless device for diagnostic purposes, may leave devices overly accessible while operating in such a mode. As a result, additional security measures are required in order to determine if a vulnerable mode should be enabled on a device, and further, whether another device should be allowed to establish a communication to a device operating in this mode.Type: ApplicationFiled: July 31, 2007Publication date: February 5, 2009Applicant: NOKIA CORPORATIONInventors: Christian Zechlin, James Dent, Franck Maillot, Eugen Palnau
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Patent number: 7483677Abstract: A low power radio frequency transceiver is arranged to form a network of communicating low power radio frequency transceivers. It comprises a transmitter for transmitting packets of data and means for controlling the transmitter to transmit a series of messages of a first type outside the network of transceivers, for maintaining synchronisation.Type: GrantFiled: January 15, 2002Date of Patent: January 27, 2009Assignee: Nokia CorporationInventors: Christian Zechlin, Thomas Block
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Publication number: 20080127223Abstract: Systems and methods applicable, for instance, in communications operations. A first device might, for example, receive from a second device an inquiry response that includes information conveying when the second device will be listening. The first device might, for instance, employ the information in dispatching a page at a time that the second device is understood to be listening.Type: ApplicationFiled: June 27, 2006Publication date: May 29, 2008Inventor: Christian Zechlin
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Publication number: 20080125107Abstract: A system and method for automatically controlling the enforcement of security in a wireless transaction. In a short-range wireless medium, such as Bluetoothâ„¢, a device (e.g., a client) may transmit information to another device (e.g., a server) over a wireless connection. If circumstances permit, security may be automatically enabled, or a request to enable security may automatically be issued, so that the information is exchanged in a secure manner.Type: ApplicationFiled: November 29, 2006Publication date: May 29, 2008Applicant: NOKIA CORPORATIONInventors: Christian Zechlin, Julien Courthial, Markus Simmer, Mark Fowlie
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Publication number: 20070173270Abstract: Systems and methods are provided for communication between master and slave devices on a network, such as a piconet or Bluetooth network. A master notifies the slave of a change in the link supervision timeout associated with the piconet. The slave stores the new link supervision timeout value and uses this value to control subsequent network-related operations, such as inquiry and paging procedures within a scatternet. The slave, aware of the link supervision timeout value for its existing connection may set an activity time limit for procedures in order to return to the physical channel of the piconet before a timeout connection loss to reestablish contact with the piconet master.Type: ApplicationFiled: January 19, 2006Publication date: July 26, 2007Applicant: Nokia CorporationInventors: Thomas Block, Christian Zechlin
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Publication number: 20050116834Abstract: A slave low power radio frequency transceiver participates in a network controlled by a master low power radio frequency transceiver and synchronises its timing to the network timing by receiving radio packets transmitted from the controlling low power radio frequency transceiver. The slave transceiver comprises timing means; detection means operable over an interval of time for detecting a predetermined portion of a received radio packet; and adjusting means for adjusting the timing means in response to the detection of a predetermined portion of a received radio packet. The slave low power radio frequency transceiver is arranged to controllably vary the duration of the interval of time.Type: ApplicationFiled: November 13, 2002Publication date: June 2, 2005Inventors: Thomas Block, Christian Zechlin, Dietmar Schnepp
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Publication number: 20050118950Abstract: A low power radio frequency transceiver is arranged to form a network of communicating low power radio frequency transceivers. It comprises a transmitter for transmitting packets of data and means for controlling the transmitter to transmit a series of messages of a first type outside the network of transceivers, for maintaining synchronisation.Type: ApplicationFiled: January 15, 2002Publication date: June 2, 2005Inventors: Christian Zechlin, Thomas Block