Patents by Inventor Song Sheng Lin
Song Sheng Lin 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: 11848583Abstract: A constant current charging device is configured to charge a device to be charged and includes: a reference current source configured to provide a reference current; a current mirror electrically coupled to the reference current source and configured to output a mirror current; a current adjusting unit electrically coupled to the current mirror and the device to be charged and configured to output a charging current according to the mirror current to charge the device to be charged; and a current compensation unit electrically coupled to the current mirror and the current adjusting unit and configured to adjust the charging current according to a reference voltage.Type: GrantFiled: March 18, 2021Date of Patent: December 19, 2023Inventors: Song-Sheng Lin, Keng-Nan Chen
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Publication number: 20210305834Abstract: A constant current charging device is configured to charge a device to be charged and includes: a current regulating unit electrically coupled to the device to be charged and configured to provide a regulating current and a charging current according to a reference voltage; a current-to-voltage converting unit electrically coupled to the current regulating unit and configured to output a regulating voltage according to the regulating current; and a first operational amplifier electrically coupled to the current regulating unit, the current-to-voltage converting unit, and the device to be charged and configured to regulate the regulating current.Type: ApplicationFiled: March 18, 2021Publication date: September 30, 2021Inventors: Song-Sheng LIN, Keng-Nan CHEN
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Publication number: 20210305835Abstract: A constant current charging device is configured to charge a device to be charged and includes: a reference current source configured to provide a reference current; a current mirror electrically coupled to the reference current source and configured to output a mirror current; a current adjusting unit electrically coupled to the current mirror and the device to be charged and configured to output a charging current according to the mirror current to charge the device to be charged; and a current compensation unit electrically coupled to the current mirror and the current adjusting unit and configured to adjust the charging current according to a reference voltage.Type: ApplicationFiled: March 18, 2021Publication date: September 30, 2021Inventors: Song-Sheng LIN, Keng-Nan CHEN
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Patent number: 10345157Abstract: An on-chip temperature sensing device is disclosed. The disclosed on-chip temperature sensing device is capable of sensing an environmental temperature of the chip. The device comprises a reference generating circuit, a first oscillator, a second oscillator, and an arithmetic logic unit. The reference generating circuit is configured to generate a first control voltage to control the first oscillator and the second oscillator. The bias current of the first oscillator and the bias current of the second oscillator are both controlled by the first control voltage so that the bias current of the first oscillator is directly proportional the bias current of the second oscillator regardless the environmental temperature. The first oscillator generates a first oscillation signal, while the second oscillator generates a second oscillation signal. The arithmetic logic unit may calculate the environmental temperature according to the first oscillation signal and the second oscillation signal.Type: GrantFiled: April 16, 2014Date of Patent: July 9, 2019Assignee: SILICON INTEGRATED SYSTEMS CORP.Inventor: Song-Sheng Lin
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Publication number: 20170160859Abstract: A dual-mode touch sensing method adapted for a stylus and a touch panel comprising N first signal lines and M second signal lines. The method comprises: sequentially controlling the N first signal lines to emit N corresponding pulse signals in N gesture periods in a scanning period, receiving M gesture feedback signals corresponding to the pulse signals via the M second signal lines in each among the N gesture periods, selectively generating a gesture signal based on the gesture feedback signals, determining a stylus period other than the N gesture periods in the scanning period by the stylus, generating a stylus signal in the stylus period by the stylus, and receiving the stylus signal and generating a stylus touching signal accordingly by the touch panel.Type: ApplicationFiled: August 5, 2016Publication date: June 8, 2017Applicant: SILICON INTEGRATED SYSTEMS CORP.Inventors: Chia-Yi CHU, Song Sheng LIN
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Publication number: 20150300890Abstract: An on-chip temperature sensing device is disclosed. The disclosed on-chip temperature sensing device is capable of sensing an environmental temperature of the chip. The device comprises a reference generating circuit, a first oscillator, a second oscillator, and an arithmetic logic unit. The reference generating circuit is configured to generate a first control voltage to control the first oscillator and the second oscillator. The bias current of the first oscillator and the bias current of the second oscillator are both controlled by the first control voltage so that the bias current of the first oscillator is directly proportional the bias current of the second oscillator regardless the environmental temperature. The first oscillator generates a first oscillation signal, while the second oscillator generates a second oscillation signal. The arithmetic logic unit may calculate the environmental temperature according to the first oscillation signal and the second oscillation signal.Type: ApplicationFiled: April 16, 2014Publication date: October 22, 2015Applicant: Silicon Integrated Systems Corp.Inventor: Song-Sheng LIN
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Patent number: 8907905Abstract: A sensing device placed in a touch sensing system of a display device includes a selector, a sensing module, and a detection module for determining touch signals generated by the touch sensing system. The selector selects two of the touch signals according to at least one selection control signal. The sensing module comprises a first differential amplifier for comparing the selected touch signals and producing a first differential signal according to first control signals. According to second control signals, the detection module receives the first differential signal, generates an averaged sensing value and a reference value, and compares the averaged sensing value with the reference value to produce a second differential signal. Thereby, the touch sensing system uses the second differential signal to generate the first control signals and the second control signals to control the operation of the touch sensing system.Type: GrantFiled: December 16, 2011Date of Patent: December 9, 2014Assignee: Silicon Intergrated Systems Corp.Inventors: Song Sheng Lin, Ssu-Wei Chang, Ying-Jyh Yeh
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Patent number: 8710879Abstract: An apparatus and method for multiplying frequency of a clock signal are provided, wherein the apparatus provides an initial oscillator signal, compares the initial oscillator signal with a reference signal to generate a first control signal, selectively outputs one of at least one lower threshold value and at least one upper threshold value from a threshold value generation circuit to a clock output circuit according to at least the first control signal, and updates an output clock signal through a digital and logical module processing the comparison of the initial oscillator signal and the selected one of the at least one upper and lower threshold values and the comparison of the initial oscillator signal and a low level signal.Type: GrantFiled: July 6, 2012Date of Patent: April 29, 2014Assignee: Silicon Integrated System Corp.Inventor: Song Sheng Lin
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Patent number: 8698568Abstract: An automatic self-calibrated oscillation method and an apparatus using the same are provided. After a static time tuning (STT) table and a run time tuning (RTT) table have been established, the apparatus converts an output clock signal to generate a current RTT value at every predefined time and then compares the current RTT value with a reference RTT value generated in response to a STT value of the STT table, or with an interpolated result generated in response to the reference RTT value to generate a deviation value. Thus, through the deviation value, the output clock signal may be calibrated to address the target frequency without the assistance of external reference clock unit or locked loop unit after the STT table and the RTT table are established.Type: GrantFiled: April 26, 2012Date of Patent: April 15, 2014Assignee: Silicon Integrated Systems Corp.Inventors: Song Sheng Lin, Chia-Yi Chu
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Publication number: 20140009193Abstract: An apparatus and method for multiplying frequency of a clock signal are provided, wherein the apparatus provides an initial oscillator signal, compares the initial oscillator signal with a reference signal to generate a first control signal, selectively outputs one of at least one lower threshold value and at least one upper threshold value from a threshold value generation circuit to a clock output circuit according to at least the first control signal, and updates an output clock signal through a digital and logical module processing the comparison of the initial oscillator signal and the selected one of the at least one upper and lower threshold values and the comparison of the initial oscillator signal and a low level signal.Type: ApplicationFiled: July 6, 2012Publication date: January 9, 2014Inventor: Song Sheng LIN
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Publication number: 20130285753Abstract: An automatic self-calibrated oscillation method and an apparatus using the same are provided. After a static time tuning (STT) table and a run time tuning (RTT) table have been established, the apparatus converts an output clock signal to generate a current RTT value at every predefined time and then compares the current RTT value with a reference RTT value generated in response to a STT value of the STT table, or with an interpolated result generated in response to the reference RTT value to generate a deviation value. Thus, through the deviation value, the output clock signal may be calibrated to address the target frequency without the assistance of external reference clock unit or locked loop unit after the STT table and the RTT table are established.Type: ApplicationFiled: April 26, 2012Publication date: October 31, 2013Applicant: SILICON INTEGRATED SYSTEMS CORP.Inventors: Song Sheng Lin, Chia-Yi Chu
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Publication number: 20130154997Abstract: A sensing device placed in a touch sensing system of a display device includes a selector, a sensing module, and a detection module for determining touch signals generated by the touch sensing system. The selector selects two of the touch signals according to at least one selection control signal. The sensing module comprises a first differential amplifier for comparing the selected touch signals and producing a first differential signal according to first control signals. According to second control signals, the detection module receives the first differential signal, generates an averaged sensing value and a reference value, and compares the averaged sensing value with the reference value to produce a second differential signal. Thereby, the touch sensing system uses the second differential signal to generate the first control signals and the second control signals to control the operation of the touch sensing system.Type: ApplicationFiled: December 16, 2011Publication date: June 20, 2013Applicant: SILICON INTEGRATED SYSTEMS CORP.Inventors: Song Sheng Lin, Ssu-Wei Chang, Ying-Jyh Yeh