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公开(公告)号：US10694289B2
公开(公告)日：2020-06-23
申请号：US15584532
申请日：2017-05-02
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Rahmi Hezar , Rajan Narasimha , Srinath Ramaswamy
Abstract: One example includes a system that is comprised of a speaker, an amplifier, a current sensor, and a compensator circuit. The speaker produces audio in response to an amplified analog input signal received at a speaker input. The amplifier receives an analog audio input signal and provides the amplified analog audio input signal to the speaker input. The current sensor senses current passing through the speaker and provides a current sensor signal indicative thereof. The compensator circuit applies a transfer function to the current sensor signal to provide a compensation signal as feedback into the analog audio input signal, the transfer function matching at least one of resistance and inductance of the speaker.
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公开(公告)号：US10592333B2
公开(公告)日：2020-03-17
申请号：US15633835
申请日：2017-06-27
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Sai Zhang , Yuming Zhu , Clive Bittlestone , Srinath Ramaswamy
Abstract: A system for error correction code (ECC) management of write-once memory (WOM) codes includes, for example, a controller for selecting between one of a WOM (Write-Once Memory) mode and an ECC (error correction code) mode. A codec is arranged to operate in the selected mode. The codec while operating in the ECC mode is arranged to identify a bit position of at least one bit error in response to ECC parity bits of a first received data word. The codec while operating in the WOM mode is arranged to receive a WOM-encoded word from an addressed location in a WOM device, to receive a second received data word to be encoded and written to the addressed location, and to generate WOM-encoded word for writing to the addressed location in the WOM device. The WOM-encoded word for writing to the addressed location is optionally ECC encoded.
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公开(公告)号：US10068631B2
公开(公告)日：2018-09-04
申请号：US14794560
申请日：2015-07-08
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Chiraag Juvekar , Joyce Kwong , Clive Bittlestone , Srinath Ramaswamy
IPC: G06F21/00 , G11C11/22 , H04L9/08 , H01L27/11507
Abstract: Read-only (“RO”) data consisting of a physically unclonable function (“PUF”) pattern is written to a ferroelectric random-access memory (“FRAM”) memory array. The FRAM array is baked to imprint the PUF pattern with a selected average depth of imprint and a corresponding average read reliability. The average depth of imprint and corresponding average read reliability are determined during testing after baking. The PUF pattern as read after baking is compared to the PUF pattern as written prior to baking. Additional PUF pattern writing and baking cycles may be performed until the average depth of imprint and associated read reliability reach a first selected level. Integrated circuits determined to be over-imprinted by exceeding a second selected level may be rejected. The first and second levels of PUF pattern imprint are selected such as to produce FRAM arrays with a unique fingerprint for each individual FRAM array-containing integrated circuit.
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公开(公告)号：US09742420B2
公开(公告)日：2017-08-22
申请号：US14954577
申请日：2015-11-30
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Sriram Narayanan , Srinath Ramaswamy , Arup Polley , Ajit Sharma
CPC classification number: H03M1/0609 , H03M1/001 , H03M1/002 , H03M1/1295 , H03M1/162
Abstract: An analog to digital converter (ADC) system that includes a first amplifier configured to amplify an analog input signal to produce an amplified direct current (DC) signal, an ADC configured to receive the amplified DC signal and convert the amplified DC signal into a digital DC signal, a digital to analog converter configured to receive the digital DC signal and convert the digital DC signal into an analog DC signal, and a second amplifier configured to receive an analog alternating current (AC) signal comprising the analog DC signal subtracted from the analog input signal and amplify the analog AC signal to produce an amplified AC signal. The ADC is further configured to receive the amplified AC signal and produce a digital AC signal. The second amplifier has a gain greater than a gain of the first amplifier.
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公开(公告)号：US09615427B1
公开(公告)日：2017-04-04
申请号：US14954618
申请日：2015-11-30
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Sriram Narayanan , Srinath Ramaswamy , Arup Polley , Ajit Sharma
IPC: H05B37/02 , A61B5/00 , H05B33/08 , A61B5/024 , A61B5/1455
CPC classification number: H05B37/0218 , A61B5/02416 , A61B5/14551 , A61B5/7203 , H05B33/0854 , H05B37/0281 , Y02B20/46
Abstract: An optical system includes an optical illumination source, an optical receiver, a correlation determination circuit, and an ambient condition control circuit. The optical illumination source is configured to emit a light in the direction of a target object. The optical receiver is configured to receive a combined optical signal that includes an ambient light component combined with an interrogation component. The correlation determination circuit is configured to compare the combined optical signal with an ambient light signal to identify a correlation factor. The ambient condition control circuit is configured to compare the correlation factor to a low correlation threshold value and a high correlation threshold value, and, based on the correlation factor exceeding the low threshold value and being less than the high correlation threshold value, cancel the ambient light component from the combined optical signal to produce an interrogation signal including the interrogation component.
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Patent Agency Ranking
公开(公告)号：US20160276731A1
公开(公告)日：2016-09-22
申请号：US15167768
申请日：2016-05-27
Applicant: Texas Instruments Incorporated
Inventor： Eunyoung Seok , Srinath Ramaswamy , Brian B. Ginsburg , Vijay B. Rentala , Baher Haroun
CPC classification number: H01P11/001 , H01P5/08 , H01P5/107 , H01Q9/04 , H01Q9/0407 , H05K3/20 , H05K3/4038 , H05K3/4644 , Y10T29/49016
Abstract: An apparatus is provided. In the apparatus, there is an antenna package and an integrated circuit (IC). A circuit trace assembly is secured to the IC. A coupler (with an antenna assembly and a high impedance surface (HIS)) is secured to the circuit trace assembly. An antenna assembly has a window region, a conductive region that substantially surrounds the window region, a circular patch antenna that is in communication with the IC, and an elliptical patch antenna that is located within the window region, that is extends over at least a portion of the circular patch antenna, and that is in communication with the circular patch antenna. The HIS substantially surrounds the antenna assembly.
Abstract translation: 提供了一种装置。 在该装置中，存在天线封装和集成电路（IC）。 电路迹线组件固定到IC。 耦合器（具有天线组件和高阻抗表面（HIS））固定到电路迹线组件。 天线组件具有窗口区域，基本上围绕窗口区域的导电区域，与IC连通的圆形贴片天线以及位于窗口区域内的椭圆形贴片天线，其延伸至少一个 圆形贴片天线的一部分，并且与圆形贴片天线通信。 HIS基本上围绕天线组件。
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公开(公告)号：US20140241581A1
公开(公告)日：2014-08-28
申请号：US14189151
申请日：2014-02-25
Applicant: Texas Instruments Incorporated
Inventor： Sriram Narayanan , Russell Rosenquist , Srinath Ramaswamy
CPC classification number: G06T7/20 , G06K9/00771 , G06T7/73 , G06T2207/10048 , G06T2207/30242 , G08B13/18
Abstract: A periphery band is around an excluded region. For automatically counting physical objects within the periphery band and the excluded region, an imaging sensor captures: a first image of the periphery band and the excluded region; and a second image of the periphery band and the excluded region. In response to the first image, a first number is counted of physical objects within the periphery band and the excluded region. Relevant motion is automatically detected within the periphery band, while ignoring motion within the excluded region. In response to the second image, a second number is counted of physical objects within the periphery band and the excluded region. In response to determining that a discrepancy exists between the detected relevant motion and the second number, the discrepancy is handled.
Abstract translation: 周边乐队在排除地区周围。 为了自动计算外围频带和排除区域内的物体，成像传感器捕获周边频带和排除区域的第一图像; 以及周边频带和排除区域的第二图像。 响应于第一图像，对周边带和排除区域内的物理对象进行计数。 相邻运动在周边波段内自动检测，同时忽略排除区域内的运动。 响应于第二图像，第二个数是对外围频带和被排除区域内的物理对象进行计数。 响应于确定检测到的相关运动与第二数目之间存在差异，处理差异。
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公开(公告)号：US11140478B2
公开(公告)日：2021-10-05
申请号：US15930957
申请日：2020-05-13
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Rahmi Hezar , Rajan Narasimha , Srinath Ramaswamy
Abstract: A system for driving an audio speaker that has an impedance, the system comprising: a scaler having an analog input and a scaler output that is an attenuated analog input; an amplifier having an amplifier input coupled to the scaler output and an amplifier output; a current sensor having a sensor input coupled to the speaker and a sensor output, the current sensor configured to generate a sensor signal at the sensor output responsive to a current from the audio speaker; and a compensator circuit having a circuit input coupled to the sensor output and a circuit output coupled to the amplifier input, the compensator circuit configured to supply a compensation signal to the amplifier input by applying a transfer function to the sensor signal.
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公开(公告)号：US20200240811A1
公开(公告)日：2020-07-30
申请号：US16844547
申请日：2020-04-09
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Arup Polley , Srinath Ramaswamy , Baher S. Haroun , Rajarshi Mukhopadhyay
Abstract: A first amplifier has an input to receive a Hall-signal output current from a first Hall element and has an output to output feedback current in response to the received Hall-signal output current. The Hall-signal output current is impeded by an impedance of the first Hall element. The feedback current is coupled to counterpoise the Hall-signal output current at the input, and a voltage at the output is an amplified Hall output signal. A second amplifier generates a high-frequency portion output signal in response to a difference between the amplified Hall output signal and a Hall-signal output signal from a second Hall element. A filter reduces high-frequency content of the high-frequency portion output signal and generates an offset correction signal. A third amplifier generates a corrected Hall signal in response to a difference between the amplified Hall output signal and the offset correction signal.
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公开(公告)号：US10541016B2
公开(公告)日：2020-01-21
申请号：US16120107
申请日：2018-08-31
Applicant: Texas Instruments Incorporated
Inventor： Chiraag Juvekar , Joyce Kwong , Clive Bittlestone , Srinath Ramaswamy
IPC: G06F21/00 , G11C11/22 , H04L9/32 , H01L27/11507
Abstract: Read-only (“RO”) data consisting of a physically unclonable function (“PUF”) pattern is written to a ferroelectric random-access memory (“FRAM”) memory array. The FRAM array is baked to imprint the PUF pattern with a selected average depth of imprint and a corresponding average read reliability. The average depth of imprint and corresponding average read reliability are determined during testing after baking. The PUF pattern as read after baking is compared to the PUF pattern as written prior to baking. Additional PUF pattern writing and baking cycles may be performed until the average depth of imprint and associated read reliability reach a first selected level. Integrated circuits determined to be over-imprinted by exceeding a second selected level may be rejected. The first and second levels of PUF pattern imprint are selected such as to produce FRAM arrays with a unique fingerprint for each individual FRAM array-containing integrated circuit.
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