Patents by Inventor Anil Tammineedi
Anil Tammineedi 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: 9189043Abstract: Power over Ethernet (PoE) communication systems provide power and data communications over the same communications link, where a power source device (PSE) provides DC power to a powered device (PD). The DC power is transmitted simultaneously over the same communications medium with the high speed data from one node to the other node. The PSE controller measures the voltage, current, and temperature of the outgoing and incoming DC supply lines to characterize the power requirements of the PD. The PSE controller may detect and validate a compatible PD, determine a power classification signature for the validated PD, supply power to the PD, monitor the power, and reduce or remove the power from the PD when the power is no longer requested or required. If the PSE finds the PD to be non-compatible, the PSE can prevent the application of power to that PD device, protecting the PD from possible damage.Type: GrantFiled: March 22, 2013Date of Patent: November 17, 2015Assignee: Broadcom CorporationInventors: Pieter Vorenkamp, Agnes Woo, Anil Tammineedi, Ichiro Fujimori, David Chin, John Perzow
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Patent number: 8782442Abstract: An apparatus and method for multi-point detection in a power source equipment (PSE) device is provided. During multi-point detection, a series of at least four currents is sequentially applied to a link port of the PSE device. Each current is applied during a different measurement interval. A voltage measurement sample is obtained for each of the measurement intervals. A difference in voltage between alternating voltage samples is determined and used by a detection module to determine whether a valid power device is coupled to the link port of the PSE.Type: GrantFiled: April 5, 2010Date of Patent: July 15, 2014Assignee: Broadcom CorporationInventors: Agnes Woo, Anil Tammineedi, Ichiro Fujimori, David Chin, John Perzow
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Patent number: 8432142Abstract: Power over Ethernet (PoE) communication systems provide power and data communications over the same communications link, where a power source device (PSE) provides DC power (for example, 48 volts DC) to a powered device (PD). The DC power is transmitted simultaneously over the same communications medium with the high speed data from one node to the other node. The PSE typically includes a controller that controls the DC power provided to the PD at the second node of the communications link. The PSE controller measures the voltage, current, and temperature of the outgoing and incoming DC supply lines to characterize the power requirements of the PD. In addition, the PSE controller may detect and validate a compatible PD, determine a power classification signature for the validated PD, supply power to the PD, monitor the power, and reduce or remove the power from the PD when the power is no longer requested or required.Type: GrantFiled: January 17, 2007Date of Patent: April 30, 2013Assignee: Broadcom CorporationInventors: Pieter Vorenkamp, Agnes Woo, Anil Tammineedi, Ichiro Fujimori, David Chin, John Perzow
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Patent number: 7936546Abstract: Power over Ethernet (PoE) communication systems provide power and data communications over the same communications link, where a power source device (PSE) provides DC power (for example, 48 volts DC) to a powered device (PD). The DC power is transmitted simultaneously over the same communications medium with the high speed data from one node to the other node. The PSE typically includes a controller that controls the DC power provided to the PD at the second node of the communications link. The PSE controller measures the voltage, current, and temperature of the outgoing and incoming DC supply lines to characterize the power requirements of the PD. In addition, the PSE controller may detect and validate a compatible PD, determine a power classification signature for the validated PD, supply power to the PD, monitor the power, and reduce or remove the power from the PD when the power is no longer requested or required.Type: GrantFiled: April 30, 2007Date of Patent: May 3, 2011Assignee: Broadcom CorporationInventors: Pieter Vorenkamp, Agnes Woo, Anil Tammineedi, Ichiro Fujimori, David Chin, John Perzow
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Patent number: 7863871Abstract: Power over Ethernet (PoE) communication systems provide power and data communications over the same communications link, where a power source device (PSE) provides DC power (for example, 48 volts DC) to a powered device (PD). The DC power is transmitted simultaneously over the same communications medium with the high speed data from one node to the other node. The PSE typically includes a controller that controls the DC power provided to the PD at the second node of the communications link. The PSE controller measures the voltage, current, and temperature of the outgoing and incoming DC supply lines to characterize the power requirements of the PD. In addition, the PSE controller may detect and validate a compatible PD, determine a power classification signature for the validated PD, supply power to the PD, monitor the power, and reduce or remove the power from the PD when the power is no longer requested or required. The PSE controller also monitors for a Maintain Power Signature (MPS).Type: GrantFiled: April 30, 2007Date of Patent: January 4, 2011Assignee: Broadcom CorporationInventors: Pieter Vorenkamp, Agnes Woo, Anil Tammineedi, Ichiro Fujimori, David Chin, John Perzow
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Publication number: 20100257381Abstract: An apparatus and method for multi-point detection in a power source equipment (PSE) device is provided. During multi-point detection, a series of at least four currents is sequentially applied to a link port of the PSE device. Each current is applied during a different measurement interval. A voltage measurement sample is obtained for each of the measurement intervals. A difference in voltage between alternating voltage samples is determined and used by a detection module to determine whether a valid power device is coupled to the link port of the PSE.Type: ApplicationFiled: April 5, 2010Publication date: October 7, 2010Applicant: BROADCOM CORPORATIONInventors: Agnes Woo, Anil Tammineedi, Ichiro Fujimori, David Chin, John Perzow
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Patent number: 7711967Abstract: An apparatus and method for multi-point detection in a power source equipment (PSE) device is provided. During multi-point detection, a series of at least four currents is sequentially applied to a link port of the PSE device. Each current is applied during a different measurement interval. A voltage measurement sample is obtained for each of the measurement intervals. A difference in voltage between alternating voltage samples is determined and used by a detection module to determine whether a valid power device is coupled to the link port of the PSE.Type: GrantFiled: January 17, 2007Date of Patent: May 4, 2010Assignee: Broadcom CorporationInventors: Agnes Woo, Anil Tammineedi, Ichiro Fujimori, David Chin, John Perzow
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Publication number: 20080040625Abstract: Power over Ethernet (PoE) communication systems provide power and data communications over the same communications link, where a power source device (PSE) provides DC power (for example, 48 volts DC) to a powered device (PD). The DC power is transmitted simultaneously over the same communications medium with the high speed data from one node to the other node. The PSE typically includes a controller that controls the DC power provided to the PD at the second node of the communications link. The PSE controller measures the voltage, current, and temperature of the outgoing and incoming DC supply lines to characterize the power requirements of the PD. In addition, the PSE controller may detect and validate a compatible PD, determine a power classification signature for the validated PD, supply power to the PD, monitor the power, and reduce or remove the power from the PD when the power is no longer requested or required. The PSE controller also monitors for a Maintain Power Signature (MPS).Type: ApplicationFiled: April 30, 2007Publication date: February 14, 2008Applicant: Broadcom CorporationInventors: Pieter Vorenkamp, Agnes Woo, Anil Tammineedi, Ichiro Fujimori, David Chin, John Perzow
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Publication number: 20070206774Abstract: Power over Ethernet (PoE) communication systems provide power and data communications over the same communications link, where a power source device (PSE) provides DC power (for example, 48 volts DC) to a powered device (PD). The DC power is transmitted simultaneously over the same communications medium with the high speed data from one node to the other node. The PSE typically includes a controller that controls the DC power provided to the PD at the second node of the communications link. The PSE controller measures the voltage, current, and temperature of the outgoing and incoming DC supply lines to characterize the power requirements of the PD. In addition, the PSE controller may detect and validate a compatible PD, determine a power classification signature for the validated PD, supply power to the PD, monitor the power, and reduce or remove the power from the PD when the power is no longer requested or required.Type: ApplicationFiled: April 30, 2007Publication date: September 6, 2007Applicant: Broadcom CorporationInventors: Pieter Vorenkamp, Agnes Woo, Anil Tammineedi, Ichiro Fujimori, David Chin, John Perzow
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Publication number: 20070170909Abstract: Power over Ethernet (PoE) communication systems provide power and data communications over the same communications link, where a power source device (PSE) provides DC power (for example, 48 volts DC) to a powered device (PD). The DC power is transmitted simultaneously over the same communications medium with the high speed data from one node to the other node. The PSE typically includes a controller that controls the DC power provided to the PD at the second node of the communications link. The PSE controller measures the voltage, current, and temperature of the outgoing and incoming DC supply lines to characterize the power requirements of the PD. In addition, the PSE controller may detect and validate a compatible PD, determine a power classification signature for the validated PD, supply power to the PD, monitor the power, and reduce or remove the power from the PD when the power is no longer requested or required.Type: ApplicationFiled: January 17, 2007Publication date: July 26, 2007Applicant: Broadcom CorporationInventors: Pieter Vorenkamp, Agnes Woo, Anil Tammineedi, Ichiro Fujimori, David Chin, John Perzow
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Publication number: 20070165548Abstract: An apparatus and method for multi-point detection in a power source equipment (PSE) device is provided. During multi-point detection, a series of at least four currents is sequentially applied to a link port of the PSE device. Each current is applied during a different measurement interval. A voltage measurement sample is obtained for each of the measurement intervals. A difference in voltage between alternating voltage samples is determined and used by a detection module to determine whether a valid power device is coupled to the link port of the PSE.Type: ApplicationFiled: January 17, 2007Publication date: July 19, 2007Applicant: Broadcom CorporationInventors: Agnes Woo, Anil Tammineedi, Ichiro Fujimori, David Chin, John Perzow
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Patent number: 7132968Abstract: A data shuffler apparatus for shuffling input bits includes a plurality of bit shufflers each inputting corresponding two bits x0 and x1 of the input bits and outputting a vector {x0?, x1?} such that a number of 1's at bit x0? over time is within ?1 of a number of 1's at bit x1?. At least two 4-bit vector shufflers input the vectors {x0?, x1?}, and output 4-bit vectors, each 4-bit vector corresponding to a combination of corresponding two vectors {x0?, x1?} produced by the bit shufflers, such that the 4-bit vector shufflers operate on the vectors {x0?, x1?} in the same manner as the bit shufflers operate on the bits x0 and x1. The current state of the bit shufflers is updated based on a next state of the 4-bit vector shufflers.Type: GrantFiled: January 5, 2005Date of Patent: November 7, 2006Assignee: Broadcom CorporationInventors: Minsheng Wang, Anil Tammineedi
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Patent number: 7071860Abstract: A system and method for noise cancellation in a signal-processing circuit (e.g., an analog-to-digital converter circuit). Various aspects of the present invention may comprise inputting a first input signal and a digital input signal to the signal-processing circuit. The digital input signal may, for example, comprise a digital dither signal or other processor control signal. The signal-processing circuit may, for example, output a signal comprising a first signal component that is primarily a function of the first input signal and a second signal component that is primarily a function of the digital input signal. The second signal component may be estimated based on estimated behavior of the signal-processing circuit in response to the digital input signal. The estimated second signal component may, for example, be substantially removed from the signal-processing circuit output signal.Type: GrantFiled: April 21, 2005Date of Patent: July 4, 2006Assignee: Broadcom CorporatinInventor: Anil Tammineedi
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Publication number: 20060022859Abstract: A system and method for noise cancellation in a signal-processing circuit (e.g., an analog-to-digital converter circuit). Various aspects of the present invention may comprise inputting a first input signal and a digital input signal to the signal-processing circuit. The digital input signal may, for example, comprise a digital dither signal or other processor control signal. The signal-processing circuit may, for example, output a signal comprising a first signal component that is primarily a function of the first input signal and a second signal component that is primarily a function of the digital input signal. The second signal component may be estimated based on estimated behavior of the signal-processing circuit in response to the digital input signal. The estimated second signal component may, for example, be substantially removed from the signal-processing circuit output signal.Type: ApplicationFiled: April 21, 2005Publication date: February 2, 2006Inventor: Anil Tammineedi
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Patent number: 6980145Abstract: A system and method for noise cancellation in a signal-processing circuit (e.g., an analog-to-digital converter circuit). Various aspects of the present invention may comprise inputting a first input signal and a digital input signal to the signal-processing circuit. The digital input signal may, for example, comprise a digital dither signal or other processor control signal. The signal-processing circuit may, for example, output a signal comprising a first signal component that is primarily a function of the first input signal and a second signal component that is primarily a function of the digital input signal. The second signal component may be estimated based on estimated behavior of the signal-processing circuit in response to the digital input signal. The estimated second signal component may, for example, be substantially removed from the signal-processing circuit output signal.Type: GrantFiled: July 30, 2004Date of Patent: December 27, 2005Assignee: Broadcom CorporationInventor: Anil Tammineedi
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Publication number: 20050134492Abstract: A data shuffler apparatus for shuffling input bits includes a plurality of bit shufflers each inputting corresponding two bits x0 and x1 of the input bits and outputting a vector {x0?, x1?} such that a number of 1's at bit x0? over time is within ?1 of a number of 1's at bit x1?. At least two 4-bit vector shufflers input the vectors {x0?, x1?}, and output 4-bit vectors, each 4-bit vector corresponding to a combination of corresponding two vectors {x0?, x1?} produced by the bit shufflers, such that the 4-bit vector shufflers operate on the vectors {x0?, x1?} in the same manner as the bit shufflers operate on the bits x0 and x1. The current state of the bit shufflers is updated based on a next state of the 4-bit vector shufflers.Type: ApplicationFiled: January 5, 2005Publication date: June 23, 2005Applicant: Broadcom CorporationInventors: Minsheng Wang, Anil Tammineedi
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Patent number: 6842130Abstract: A data shuffler apparatus for shuffling input bits includes a plurality of bit shufflers each inputting corresponding two bits x0 and x1 of the input bits and outputting a vector {x0?, x1?} such that a number of 1's at bit x0? over time is within ?1 of a number of 1's at bit x1?. At least two 4-bit vector shufflers input the vectors {x0?, x1?}, and output 4-bit vectors, each 4-bit vector corresponding to a combination of corresponding two vectors {x0?, x1?} produced by the bit shufflers, such that the 4-bit vector shufflers operate on the vectors {x0?, x1?} in the same manner as the bit shufflers operate on the bits x0 and x1. The current state of the bit shufflers is updated based on a next state of the 4-bit vector shufflers.Type: GrantFiled: March 31, 2004Date of Patent: January 11, 2005Assignee: Broadcom CorporationInventors: Minsheng Wang, Anil Tammineedi
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Patent number: 6795003Abstract: A data shuffler apparatus for shuffling input bits includes a plurality of bit shufflers each inputting corresponding two bits x0 and x1 of the input bits and outputting a vector {x0′, x1′} such that a number of 1's at bit x0′ over time is within ±1 of a number of 1's at bit x1′. At least two 4-bit vector shufflers input the vectors {x0′, x1′}, and output 4-bit vectors, each 4-bit vector corresponding to a combination of corresponding two vectors {x0′, x1′} produced by the bit shufflers, such that the 4-bit vector shufflers operate on the vectors {x0′, x1′} in the same manner as the bit shufflers operate on the bits x0 and x1. The current state of the bit shufflers is updated based on a next state of the 4-bit vector shufflers.Type: GrantFiled: January 30, 2003Date of Patent: September 21, 2004Assignee: Broadcom CorporationInventors: Minsheng Wang, Anil Tammineedi
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Publication number: 20040178939Abstract: A data shuffler apparatus for shuffling input bits includes a plurality of bit shufflers each inputting corresponding two bits x0 and x1 of the input bits and outputting a vector {x0′, x1′} such that a number of 1's at bit x0′ over time is within ∀1 of a number of 1's at bit x1′. At least two 4-bit vector shufflers input the vectors {x0′, x1′}, and output 4-bit vectors, each 4-bit vector corresponding to a combination of corresponding two vectors {x0′, x1′} produced by the bit shufflers, such that the 4-bit vector shufflers operate on the vectors {x0′, x1′} in the same manner as the bit shufflers operate on the bits x0 and x1. The current state of the bit shufflers is updated based on a next state of the 4-bit vector shufflers.Type: ApplicationFiled: March 31, 2004Publication date: September 16, 2004Inventors: Minsheng Wang, Anil Tammineedi
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Publication number: 20040150543Abstract: A data shuffler apparatus for shuffling input bits includes a plurality of bit shufflers each inputting corresponding two bits x0 and x1 of the input bits and outputting a vector {x0′, x1′} such that a number of 1's at bit x0′ over time is within ±1 of a number of 1's at bit x1′. At least two 4-bit vector shufflers input the vectors {x0′, x1′}, and output 4-bit vectors, each 4-bit vector corresponding to a combination of corresponding two vectors {x0′, x1′} produced by the bit shufflers, such that the 4-bit vector shufflers operate on the vectors {x0′, x1′} in the same manner as the bit shufflers operate on the bits x0 and x1. The current, state of the bit shufflers is updated based on a next state of the 4-bit vector shufflers.Type: ApplicationFiled: January 30, 2003Publication date: August 5, 2004Applicant: Broadcom CorporationInventors: Minsheng Wang, Anil Tammineedi