Patents by Inventor SONGHUA HU
SONGHUA HU 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: 20230408301Abstract: An apparatus is provided and includes a rotary encoder that comprises a stator, a rotor, and a controller. The stator has an opening adapted to surround a first portion of a rotatable shaft, a transmit region, and a receive region. The rotor has an opening adapted to surround a second portion of the rotatable shaft, an annular conductive region, and at least one conductor electrically coupled with the annular conductive region. The controller has an input coupled to the receive region and has an output coupled to the transmit region. The controller is configured to transmit a first signal on the output of the controller and to the transmit region of the stator, receive a second signal on the input of the controller and from the receive region of the stator, and determine, based on the second signal, a proximity of the at least one conductor to the receive region.Type: ApplicationFiled: September 5, 2023Publication date: December 21, 2023Inventors: Lichang Cheng, Zichen Qiu, Songhua Hu, Yang Li
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Patent number: 11747174Abstract: An apparatus is provided and includes a rotary encoder that comprises a stator, a rotor, and a controller. The stator has an opening adapted to surround a first portion of a rotatable shaft, a transmit region, and a receive region. The rotor has an opening adapted to surround a second portion of the rotatable shaft, an annular conductive region, and at least one conductor electrically coupled with the annular conductive region. The controller has an input coupled to the receive region and has an output coupled to the transmit region. The controller is configured to transmit a first signal on the output of the controller and to the transmit region of the stator, receive a second signal on the input of the controller and from the receive region of the stator, and determine, based on the second signal, a proximity of the at least one conductor to the receive region.Type: GrantFiled: May 21, 2021Date of Patent: September 5, 2023Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Lichang Cheng, Ziehen Qiu, Songhua Hu, Yang Li
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Publication number: 20220196442Abstract: An apparatus is provided and includes a rotary encoder that comprises a stator, a rotor, and a controller. The stator has an opening adapted to surround a first portion of a rotatable shaft, a transmit region, and a receive region. The rotor has an opening adapted to surround a second portion of the rotatable shaft, an annular conductive region, and at least one conductor electrically coupled with the annular conductive region. The controller has an input coupled to the receive region and has an output coupled to the transmit region. The controller is configured to transmit a first signal on the output of the controller and to the transmit region of the stator, receive a second signal on the input of the controller and from the receive region of the stator, and determine, based on the second signal, a proximity of the at least one conductor to the receive region.Type: ApplicationFiled: May 21, 2021Publication date: June 23, 2022Inventors: Lichang Cheng, Zichen Qui, Songhua Hu, Yang Li
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Publication number: 20220178727Abstract: A system generating an electrical signal based on at least one physical quantity, includes sensor units each generating an individual electrical signal in response to the at least one physical quantity, a selecting unit selecting a first number of sensor units from the sensor units and outputting a first combined electrical signal based on the first number of sensor units, and a calibrating unit determining a second number of sensor units to be selected based on the first combined electrical signal.Type: ApplicationFiled: February 22, 2022Publication date: June 9, 2022Inventors: Ge Shen, Jun Zhang, Songhua Hu
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Patent number: 11301091Abstract: A circuit includes a timer to count edges of a clock from an initial count value to a terminal count value and to output a timer signal responsive to the terminal count value being reached. A random number generator circuit generates a plurality of random number values. Each generated random number value is sequentially loaded into the timer as one of the initial count value or the terminal count value. A capacitive sensor circuit determines, responsive to receipt of a plurality of timer signals from the timer, a touch event of a capacitive touch sensor.Type: GrantFiled: September 9, 2020Date of Patent: April 12, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Ge Shen, Jun Zhang, Songhua Hu, Yi Zhou
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Patent number: 11287301Abstract: An apparatus for filtering touches and disturbances of a container comprises a processing unit (PU) and computer-readable storage devices storing machine instructions. The PU obtains and sums together sensor values for a first sampling time from electrodes affixed to the container. The PU determines a difference between the sum for the first sampling time and a sum for a second sampling time, which is compared to a threshold representative of a change in capacitance due to a touch on the container. The PU determines whether the touch on the container has occurred at the first sampling time based on the comparison. If a touch occurred, the PU continues to obtain additional sensor values for additional sampling times and determine whether a touch on the container has occurred at the additional sampling times, until determining no touch occurred. The PU determines liquid level for the container after determining no touch occurred.Type: GrantFiled: January 23, 2020Date of Patent: March 29, 2022Assignee: Texas Instruments IncorporatedInventors: Haozhe Tang, Yang Li, Songhua Hu
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Patent number: 11280646Abstract: A system generating an electrical signal based on at least one physical quantity, includes sensor units each generating an individual electrical signal in response to the at least one physical quantity, a selecting unit selecting a first number of sensor units from the sensor units and outputting a first combined electrical signal based on the first number of sensor units, and a calibrating unit determining a second number of sensor units to be selected based on the first combined electrical signal.Type: GrantFiled: February 27, 2019Date of Patent: March 22, 2022Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Ge Shen, Jun Zhang, Songhua Hu
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Publication number: 20210063226Abstract: An apparatus for filtering touches and disturbances of a container comprises a processing unit (PU) and computer-readable storage devices storing machine instructions. The PU obtains and sums together sensor values for a first sampling time from electrodes affixed to the container. The PU determines a difference between the sum for the first sampling time and a sum for a second sampling time, which is compared to a threshold representative of a change in capacitance due to a touch on the container. The PU determines whether the touch on the container has occurred at the first sampling time based on the comparison. If a touch occurred, the PU continues to obtain additional sensor values for additional sampling times and determine whether a touch on the container has occurred at the additional sampling times, until determining no touch occurred. The PU determines liquid level for the container after determining no touch occurred.Type: ApplicationFiled: January 23, 2020Publication date: March 4, 2021Inventors: Haozhe Tang, Yang Li, Songhua Hu
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Publication number: 20200409492Abstract: A circuit includes a timer to count edges of a clock from an initial count value to a terminal count value and to output a timer signal responsive to the terminal count value being reached. A random number generator circuit generates a plurality of random number values. Each generated random number value is sequentially loaded into the timer as one of the initial count value or the terminal count value. A capacitive sensor circuit determines, responsive to receipt of a plurality of timer signals from the timer, a touch event of a capacitive touch sensor.Type: ApplicationFiled: September 9, 2020Publication date: December 31, 2020Inventors: Ge Shen, Jun Zhang, Songhua Hu, Yi Zhou
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Patent number: 10802656Abstract: A circuit includes a timer to count edges of a clock from an initial count value to a terminal count value and to output a timer signal responsive to the terminal count value being reached. A random number generator circuit generates a plurality of random number values. Each generated random number value is sequentially loaded into the timer as one of the initial count value or the terminal count value. A capacitive sensor circuit determines, responsive to receipt of a plurality of timer signals from the timer, a touch event of a capacitive touch sensor.Type: GrantFiled: January 25, 2019Date of Patent: October 13, 2020Assignee: TEXAS INSTRUMENTS INCORPORATEDInventors: Ge Shen, Jun Zhang, Songhua Hu, Yi Zhou
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Publication number: 20200096370Abstract: A system generating an electrical signal based on at least one physical quantity, includes sensor units each generating an individual electrical signal in response to the at least one physical quantity, a selecting unit selecting a first number of sensor units from the sensor units and outputting a first combined electrical signal based on the first number of sensor units, and a calibrating unit determining a second number of sensor units to be selected based on the first combined electrical signal.Type: ApplicationFiled: February 27, 2019Publication date: March 26, 2020Inventors: Ge Shen, Jun Zhang, Songhua Hu
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Publication number: 20200073494Abstract: A circuit includes a timer to count edges of a clock from an initial count value to a terminal count value and to output a timer signal responsive to the terminal count value being reached. A random number generator circuit generates a plurality of random number values. Each generated random number value is sequentially loaded into the timer as one of the initial count value or the terminal count value. A capacitive sensor circuit determines, responsive to receipt of a plurality of timer signals from the timer, a touch event of a capacitive touch sensor.Type: ApplicationFiled: January 25, 2019Publication date: March 5, 2020Inventors: Ge Shen, Jun Zhang, Songhua Hu, Yi Zhou
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Patent number: 10180377Abstract: A test bed for electric wheel comprehensive performance is characterized in that the test bed comprises a foundation, a portal frame set on the foundation and including a cross beam and two columns supporting both ends of the cross beam individually, a main pin arm movably connected to the portal frame, and a main rotation shaft revolvably and perpendicularly mounted on the top of the main pin arm, wherein the electric wheel is mounted on the main pin arm and is located inside of the portal frame and right below the main rotation shaft. The test bed further comprises at least one of a road simulation mechanism, an inertia simulation mechanism, a driving power mechanism, a perpendicular loading mechanism, and a steering mechanism which take the simulation test on the electric wheel.Type: GrantFiled: November 11, 2014Date of Patent: January 15, 2019Assignee: SHENZHEN POLYTECHNICInventors: Ping He, Chengwei Han, Zhurong Dong, Songhua Hu
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Publication number: 20170059451Abstract: A test bed for electric wheel comprehensive performance is characterized in that the test bed comprises a foundation, a portal frame set on the foundation and including a cross beam and two columns supporting both ends of the cross beam individually, a main pin arm movably connected to the portal frame, and a main rotation shaft revolvably and perpendicularly mounted on the top of the main pin arm, wherein the electric wheel is mounted on the main pin arm and is located inside of the portal frame and right below the main rotation shaft. The test bed further comprises at least one of a road simulation mechanism, an inertia simulation mechanism, a driving power mechanism, a perpendicular loading mechanism, and a steering mechanism which take the simulation test on the electric wheel.Type: ApplicationFiled: November 11, 2014Publication date: March 2, 2017Inventors: PING HE, CHENGWEI HAN, ZHURONG DONG, SONGHUA HU