Patents by Inventor Fredrik Jansson
Fredrik Jansson 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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Publication number: 20170302598Abstract: It is presented a method for managing a jitter buffer depth for receiving real-time communication. The method is performed in a receiver and comprises the steps of: determining an adaptive bitrate state of the receiver when a current capacity of a communication channel for receiving the real-time communication is below a maximum bitrate for receiving the real-time communication; and increasing a depth of a jitter buffer for receiving the real-time communication when the adaptive bitrate state is determined.Type: ApplicationFiled: November 4, 2014Publication date: October 19, 2017Applicant: Telefonaktiebolaget LM Ericsson (publ)Inventors: Fredrik JANSSON, Erlendur KARLSSON, Jonas LUNDBERG, Yang ZUO
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Patent number: 9584759Abstract: There is provided determination of a bit rate request (BRR) for a multimedia encoder of an electronic device. First bit rate information is received from a receiver of multimedia content. The multimedia content is generated by the multimedia encoder and transmitted by the electronic device on a transmission link of the electronic device to the receiver. The first bit rate information is related to the transmission link. Second bit rate information relating to a reception link of the electronic device is acquired. A set of properties of the transmission link and the reception link is determined. A combined BRR is determined for the multimedia encoder as a function of the first bit rate information and the second bit rate information, wherein the function depends on the set of properties. The combined BRR is provided to the multimedia encoder.Type: GrantFiled: February 14, 2014Date of Patent: February 28, 2017Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Fredrik Jansson, Erlendur Karlsson
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Publication number: 20170019631Abstract: There is provided determination of a bit rate request (BRR) for a multimedia encoder of an electronic device. First bit rate information is received from a receiver of multimedia content. The multimedia content is generated by the multimedia encoder and transmitted by the electronic device on a transmission link of the electronic device to the receiver. The first bit rate information is related to the transmission link. Second bit rate information relating to a reception link of the electronic device is acquired. A set of properties of the transmission link and the reception link is determined. A combined BRR is determined for the multimedia encoder as a function of the first bit rate information and the second bit rate information, wherein the function depends on the set of properties. The combined BRR is provided to the multimedia encoder.Type: ApplicationFiled: February 14, 2014Publication date: January 19, 2017Inventors: Fredrik JANSSON, Erlendur KARLSSON
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Publication number: 20150204817Abstract: The present invention relates to a device for controlling movement of a fluid sample along a flow path and a corresponding method. The device comprises a working electrode (2) arranged to contact the fluid sample when the fluid sample moves along the flow path, and a reference electrode (3) arranged to contact the fluid sample when the fluid sample moves along the flow path. At least a portion of the reference electrode is arranged abreast of or downstream at least a portion of the working electrode. The present invention is advantageous in that it provides a device wherein a fluid sample may be transported and accurately controlled, with respect to e.g. timing, volumes and flow rates, over greater distances compared to prior art.Type: ApplicationFiled: September 3, 2013Publication date: July 23, 2015Inventors: Fredrik Jansson, Magnus Molin
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Patent number: 8472320Abstract: A method of controlling an adaptable jitter buffer in accordance with the present invention detects a context description of data handled by the adaptable jitter buffer. Thereafter it is determined whether the detected context description is equal to a predetermined context description. If not, jitter buffer adaptation proceeds as normal. Otherwise it is determined whether the current target buffer depth is too low for the detected context description. If not, the target buffer depth is frozen to the current value. Otherwise it is increased and frozen at a higher value that is compatible with the detected context description.Type: GrantFiled: November 6, 2007Date of Patent: June 25, 2013Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Daniel Enström, Fredrik Jansson
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Publication number: 20110266151Abstract: The present invention concerns microfluidic systems with printed surface structured electronically controllable wettability switches for efficient manipulation of small amounts of fluids. The high performance microfluidic systems of the invention can be used in many applications, e.g. in rapid DNA separation and sizing, cell manipulation, cell sorting and molecule detection.Type: ApplicationFiled: April 25, 2011Publication date: November 3, 2011Inventor: Fredrik Jansson
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Publication number: 20100034332Abstract: A method of controlling an adaptable jitter buffer in accordance with the present invention detects a context description of data handled by the adaptable jitter buffer. Thereafter it is determined whether the detected context description is equal to a predetermined context description. If not, jitter buffer adaptation proceeds as normal. Otherwise it is determined whether the current target buffer depth is too low for the detected context description. If not, the target buffer depth is frozen to the current value. Otherwise it is increased and frozen at a higher value that is compatible with the detected context description.Type: ApplicationFiled: November 8, 2007Publication date: February 11, 2010Inventors: Daniel Enström, Fredrik Jansson
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Publication number: 20090034425Abstract: A method and system are disclosed for call case controlled block error rate (BLER) or bit error rate (BER) target setting in WCDMA and other CDMA technologies for Mobile to Mobile (MTM) and Mobile to Public Switched Telephone Network (MTPSTN) communication systems, whereby first an overall BLER/BER target value is defined.Type: ApplicationFiled: December 3, 2003Publication date: February 5, 2009Applicant: TELEFONAKTIEBOLAGET LM ERICSSONInventors: Fredrik Jansson, Rutger Andersson, Michael Anehill, Karl Hellwig
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Patent number: 7450601Abstract: A method for controlling a jitter buffer and a communication apparatus implementing the method and functioning as a first node of a communication system, wherein the jitter butter is adapted to buffer a stream of blocks of compressed speech information generated in a second node in the communication system, transmitted to and received in the first node. Blocks of compressed speech information in said stream of blocks are selected (201) according to a predetermined rule based on the current buffering delay of the jitter buffer and at least one characteristic of said blocks of compressed speech information. Predetermined actions aiming at reducing buffering delay in the jitter butter are applied (202) to the selected blocks.Type: GrantFiled: December 14, 2001Date of Patent: November 11, 2008Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Jim Sundqvist, Fredrik Jansson
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Patent number: 7444281Abstract: A method for generating speech packets and a communication apparatus implementing the method and functioning as a first node of a communication system. A first stream of digital speech samples having a first sample rate is provided (201). If the first sample rate is determined (202) as not matching a required sample rate, said speech packets are generated (204) based on a second stream of digital speech samples generated (203) by performing sample rate conversion of the first stream of digital speech samples.Type: GrantFiled: December 14, 2001Date of Patent: October 28, 2008Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Jim Sundqvist, Fredrik Jansson
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Patent number: 7328038Abstract: In a radio communication system in a mobile to mobile call with one good (AMR102) and bad (AMR515) radio link, the good radio (AMR102) link is forced by the poor (AMR515) link to use a more robust AMR coded mode (AMR515) and thereby using excessive power (232). A capacity loss in such system is avoided by adjusting the power level (212) for the connection with the good link (AMR102).Type: GrantFiled: April 2, 2003Date of Patent: February 5, 2008Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Karl Hellwig, Stefan Bruhn, Fredrik Jansson
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Patent number: 7036529Abstract: An arrangement for mixing a first and a second gas flow, for example, an inlet flow with a exhaust gas return flow in a diesel engine, comprising a line (16) for the first flow, an inlet (7) for the second flow in the line (16), in order to achieve the mixing; a streamlined body (8) arranged to be displaced in the longitudinal direction of the line (16) at the inlet (7) in order to achieve a variable venturi effect and in this way a variable suction effect and mixture of the mixed flow; and actuating means for displacing the body forwards and backwards in the line. In order to minimise the need for throttling and the accompanying pressure losses, the streamlined body (8) and the supply part (2) are designed to achieve maximal throttling in the line (16) close to the inlet (7), independently of the position of the body.Type: GrantFiled: August 30, 2001Date of Patent: May 2, 2006Assignee: Varivent Innovations ABInventors: Gustav Berggren, Fredrik Jansson, Fredrik Westin, Hans-Erik Ångström
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Publication number: 20050136959Abstract: In a radio communication system in a mobile to mobile call with one good (AMR102) and bad (AMR515) radio link, the good radio (AMR102) link is forced by the poor (AMR515) link to use a more robust AMR coded mode (AMR515) and thereby using excessive power (232). A capacity loss in such system is avoided by adjusting the power level (212) for the connection with the good link (AMR102).Type: ApplicationFiled: April 2, 2003Publication date: June 23, 2005Applicant: Telefonaktiebolaget LM Ericsson (publ)Inventors: Karl Hellwig, Stefan Bruhn, Fredrik Jansson
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Publication number: 20040099257Abstract: An arrangement for mixing a first and a second gas flow, for example, an inlet flow with a exhaust gas return flow in a diesel engine, comprising a line (16) for the first flow, an inlet (7) for the second flow in the line (16), in order to achieve the mixing; a streamlined body (8) arranged to be displaced in the longitudinal direction of the line (16) at the inlet (7) in order to achieve a variable venturi effect and in this way a variable suction effect and mixture of the mixed flow; and actuating means for displacing the body forwards and backwards in the line. In order to minimise the need for throttling and the accompanying pressure losses, the streamlined body (8) and the supply part (2) are designed to achieve maximal throttling in the line (16) close to the inlet (7), independently of the position of the body.Type: ApplicationFiled: July 7, 2003Publication date: May 27, 2004Inventors: Gustav Berggren, Fredrik Jansson, Fredrik Westin, Hans-Erik Angstrm
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Publication number: 20040076191Abstract: A method for controlling a jitter buffer and a communication apparatus implementing the method and functioning as a first node of a communication system, wherein the jitter butter is adapted to buffer a stream of blocks of compressed speech information generated in a second node in the communication system, transmitted to and received in the first node. Blocks of compressed speech information in said stream of blocks are selected (201) according to a predetermined rule based on the current buffering delay of the jitter buffer and at least one characteristic of said blocks of compressed speech information. Predetermined actions aiming at reducing buffering delay in the jitter butter are applied (202) to the selected blocks.Type: ApplicationFiled: December 2, 2003Publication date: April 22, 2004Inventors: Jim Sundqvist, Fredrik Jansson
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Publication number: 20040071132Abstract: A method for generating speech packets and a communication apparatus implementing the method and functioning as a first node of a communication system. A first stream of digital speech samples having a first sample rate is provided (201). If the first sample rate is determined (202) as not matching a required sample rate, said speech packets are generated (204) based on a second stream of digital speech samples generated (203) by performing sample rate conversion of the first stream of digital speech samples.Type: ApplicationFiled: November 6, 2003Publication date: April 15, 2004Inventors: Jim Sundqvist, Fredrik Jansson
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Patent number: 6539010Abstract: A radiocommunication method and system which facilitates half-rate communications as well as downlink power control and selective beam transmission is described. Data associated with two terminals is multiplexed into a single timeslot. A first terminal's data occupies a first portion of the timeslot, while the second terminal's data occupies a second portion of the timeslot. A synchronization/training field may separate the first and second portions of the timeslot. In this way, a base station can change the power level and/or direction of transmission of the different terminal's data even though that data is multiplexed together on the same timeslot.Type: GrantFiled: October 28, 1999Date of Patent: March 25, 2003Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Bo Hagerman, Fredrik Jansson, Thomas Östman
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Patent number: 6345251Abstract: Low rate data signals, such as standard TTY signals and standard DTMF signals, can be effectively analyzed and encoded by speech encoders employed in conventional digital cellular system. This is accomplished by providing a low rate data encoder in the transmission path of the low rate data signal, just prior to the speech encoder used by the digital cellular system. In so doing, the standard, low rate data signal is transformed (i.e., modified) by the low rate data encoder into a signal that is more compatible with the speech encoder. Similarly, a low rate data decoder is provided at the receiving end of the transmission path to decode the modified, low rate data signal.Type: GrantFiled: June 15, 1999Date of Patent: February 5, 2002Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Fredrik Jansson, Erik Ekudden, Karl Hellwig, Tomas Frankkila
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Patent number: 6195337Abstract: In a digital cellular radio communication system, a base station selects a speech/channel encoding mode based on measurements of the local radio environment. The mobile station determines the selected mode by trial decoding possible modes to find the most probable mode and uses the same mode for transmission to the base station on the return link. The coding gain/loss obtained by this mode switching may be used to adjust the output power of transmitters, thereby reducing the overall interference level in the system.Type: GrantFiled: April 25, 1997Date of Patent: February 27, 2001Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Johan Nyström, Tor Björn Minde, Fredrik Jansson
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Patent number: 5901186Abstract: In a digital radio communication system in which information is transmitted and received in time slots and some bits of each received audio frame is interleaved over at least two time slots and other bits in each audio frame at are non-interleaved, bad received audio frames are detected by detecting possible bit errors in a channel encoded non-interleaved bit sequence in each received time slot. If bit errors have been detected in this bit sequence a bad received frame is indicated.Type: GrantFiled: October 28, 1996Date of Patent: May 4, 1999Assignee: Telefonaktieboalget LM EricssonInventors: Karim Jamal, Fredrik Jansson