Patents by Inventor Christian Willibald Bohm
Christian Willibald Bohm 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: 8976961Abstract: A system architecture allows for the transmission of multiple HDCP encrypted audio/video streams over a single unified cable to multiple receivers using a daisy chain topology. Each individual audio/video stream is first encrypted and then combined into a uniform stream, and the uniform stream is transmitted to each of the receivers. Each receiver contains a decryption engine that operates independently of the engines in the other receivers, therefore allowing each receiver to select to a unique channel and decrypt and display one of the audio/video streams.Type: GrantFiled: April 11, 2011Date of Patent: March 10, 2015Assignee: Analog Devices, Inc.Inventors: Christian Willibald Bohm, Peter Hall
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Patent number: 8370536Abstract: A method and apparatus for maintaining communication between an HDMI sources and an HDMI sink by monitoring data received from the HDMI source, and, based on the monitoring, dynamically switching between a first and a second mode without user intervention. The device may include a head end connector, a tail end connector and a cable. The head end connector may include a controller, a memory and an electrical signal transceiver. The controller may monitor data output from the source, and based on the outputted data; the controller may determine whether to maintain a first communication method or a second communication method.Type: GrantFiled: October 7, 2009Date of Patent: February 5, 2013Assignee: Analog Devices, Inc.Inventor: Christian Willibald Bohm
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Publication number: 20120257750Abstract: A system architecture allows for the transmission of multiple HDCP encrypted audio/video streams over a single unified cable to multiple receivers using a daisy chain topology. Each individual audio/video stream is first encrypted and then combined into a uniform stream, and the uniform stream is transmitted to each of the receivers. Each receiver contains a decryption engine that operates independently of the engines in the other receivers, therefore allowing each receiver to select to a unique channel and decrypt and display one of the audio/video streams.Type: ApplicationFiled: April 11, 2011Publication date: October 11, 2012Applicant: ANALOG DEVICES, INC.Inventors: Christian Willibald Bohm, Peter Hall
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Patent number: 8130124Abstract: Embodiments provide for a method for eliminating pathological sequences in a serial bit stream. Parallel data words having a first bit length are received. The received data words may be analyzed for a pathological sequence. If a pathological sequence is present in a data word, the data word containing the pathological sequence may be segmented into data segments having bit lengths less than a pathological sequence. The data word may be reformatted by generating reformatted data words having a second bit length. The reformatted data words may contain at least one of the data segments and the second bit length is greater than the first bit length. The reformatting may be performed by adding framing bits to the segments to form the reformatted data words. The reformatted data words are transmitted in place of the data word containing the pathological sequence.Type: GrantFiled: September 18, 2009Date of Patent: March 6, 2012Assignee: Analog Devices, Inc.Inventor: Christian Willibald Bohm
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Patent number: 8108567Abstract: An apparatus and a method for providing serialized HDMI data from an HDMI source to an HDMI sink. An HDMI transmitter may include inputs including control inputs, a deserializer, and a parser. The inputs may receive serialized HDMI data from an HDMI data source. A deserializer may deserialize the serialized HDMI data received on each of the respective inputs and outputting parallel data for each of the inputs. A parser may parse the parallel data output from the deserializer from each of the respective inputs into serial video data at a first clock rate and audio data at a second clock rate. Control inputs of the transmitter may be set to a first mode in which from the deserializer is caused to bypass the parser, and the parallel data is output from the HDMI transmitter.Type: GrantFiled: November 5, 2009Date of Patent: January 31, 2012Assignee: Analog Devices, Inc.Inventor: Christian Willibald Bohm
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Publication number: 20100321573Abstract: An apparatus and a method for providing serialized HDMI data from an HDMI source to an HDMI sink. An HDMI transmitter may include inputs including control inputs, a deserializer, and a parser. The inputs may receive serialized HDMI data from an HDMI data source. A deserializer may deserialize the serialized HDMI data received on each of the respective inputs and outputting parallel data for each of the inputs. A parser may parse the parallel data output from the deserializer from each of the respective inputs into serial video data at a first clock rate and audio data at a second clock rate. Control inputs of the transmitter may be set to a first mode in which from the deserializer is caused to bypass the parser, and the parallel data is output from the HDMI transmitter.Type: ApplicationFiled: November 5, 2009Publication date: December 23, 2010Applicant: ANALOG DEVICES, INC.Inventor: Christian Willibald BOHM
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Publication number: 20100322340Abstract: Embodiments provide for a method for eliminating pathological sequences in a serial bit stream. Parallel data words having a first bit length are received. The received data words may be analyzed for a pathological sequence. If a pathological sequence is present in a data word, the data word containing the pathological sequence may be segmented into data segments having bit lengths less than a pathological sequence. The data word may be reformatted by generating reformatted data words having a second bit length. The reformatted data words may contain at least one of the data segments and the second bit length is greater than the first bit length. The reformatting may be performed by adding framing bits to the segments to form the reformatted data words. The reformatted data words are transmitted in place of the data word containing the pathological sequence.Type: ApplicationFiled: September 18, 2009Publication date: December 23, 2010Applicant: ANALOG DEVICES, INC.Inventor: Christian Willibald BOHM
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Publication number: 20100271486Abstract: A method and apparatus for maintaining communication between an HDMI sources and an HDMI sink by monitoring data received from the HDMI source, and, based on the monitoring, dynamically switching between a first and a second mode without user intervention. The device may include a head end connector, a tail end connector and a cable. The head end connector may include a controller, a memory and an electrical signal transceiver. The controller may monitor data output from the source, and based on the outputted data; the controller may determine whether to maintain a first communication method or a second communication method.Type: ApplicationFiled: October 7, 2009Publication date: October 28, 2010Applicant: Analog Devices, Inc.Inventor: Christian Willibald BOHM
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Patent number: 7176979Abstract: A synchronization pulse detector includes an absolute value independent shape detector for processing samples of an input signal having a synchronization pulse and a plurality of non-synchronization pulses to determine whether such samples have a predetermined sequence. The predetermined sequence includes a first and second absolute value independent time-varying portions and a first and second absolute value independent non-time varying portions. One of the first and second absolute value independent time-varying portions having a positive slope and the other one of the first and second absolute value independent time-varying portions having a negative slope.Type: GrantFiled: July 13, 2001Date of Patent: February 13, 2007Assignee: Analog Devices, Inc.Inventors: Christian Willibald Böhm, Michael Patrick Daly, Kieran Heffernan
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Publication number: 20030076444Abstract: A synchronization pulse detector for detecting a synchronization pulse within an input signal. The input signal has “level” portions (i.e., substantially non-time varying portions) and “transition” portions (i.e., substantially time varying portions). The pulse detector includes a pulse shape detector for determining each time the input signal has a sequence of a first “level” portion, followed by a first “transition” portion, followed by a second “level” portion, followed by a second “transition” portion followed by a third “level” portion, one of the first and second “transition” portions being positive and the other one of the first and second “transition” portions being negative. Each time such sequence is determined a pulse_shape detected pulse is produced. An evaluator is provided to reject invalid pulse_shape detected pulses.Type: ApplicationFiled: July 13, 2001Publication date: April 24, 2003Inventors: Christian Willibald Bohm, Michael Patrick Daly, Kieran Heffernan
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Patent number: 6271889Abstract: A synchronization pulse detector for detecting a synchronization pulse within an input signal. The input signal has “level” portions (i.e., substantially non-time varying portions) and “transition” portions (i.e., substantially time varying portions). The pulse detector includes a pulse shape detector for determining each time the input signal has a sequence of a first “level” portion, followed by a first “transition” portion, followed by a second “level” portion, followed by a second “transition” portion followed by a third “level” portion, one of the first and second “transition” portions being positive and the other one of the first and second “transition” portions being negative. Each time such sequence is determined a pulse_shape detected pulse is produced. An evaluator is provided to reject invalid pulse_shape detected pulses.Type: GrantFiled: March 4, 1999Date of Patent: August 7, 2001Assignee: Analog Devices, Inc.Inventors: Christian Willibald Böhm, Michael Patrick Daly, Kieran Heffernan