Patents by Inventor Yihai Xiang
Yihai Xiang 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: 9792917Abstract: The present invention relates to an audio processing device and method, and an electro-acoustic converting device and method. The audio processing device comprises: a first receiving module, configured to receive a first audio signal; a second receiving module, configured to receive a second audio signal; an audio synthesizing module, configured to synthesize the first audio signal and the second audio signal to obtain a third audio signal; and an audio outputting module, configured to output the third audio signal. According to the present invention, when enjoying songs or music or learning languages by using an audio processing device or an audio playing device, a user is capable of hearing his or her own voice while singing or reading, which greatly improves the effects of self-entertainment and language learning.Type: GrantFiled: May 8, 2014Date of Patent: October 17, 2017Assignee: KT MICRO, INC.Inventors: Dianyu Chen, Yihai Xiang, Haiqing Lin, Pan Mu, Yanqing Wu, Hekai Kang, Dongfeng Zhou, Yuqiang Yuan, Wenhui Yuan, Jinfeng Wu
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Publication number: 20160086610Abstract: The present invention relates to an audio processing device and method, and an electro-acoustic converting device and method. The audio processing device comprises: a first receiving module, configured to receive a first audio signal; a second receiving module, configured to receive a second audio signal; an audio synthesizing module, configured to synthesize the first audio signal and the second audio signal to obtain a third audio signal; and an audio outputting module, configured to output the third audio signal. According to the present invention, when enjoying songs or music or learning languages by using an audio processing device or an audio playing device, a user is capable of hearing his or her own voice while singing or reading, which greatly improves the effects of self-entertainment and language learning.Type: ApplicationFiled: May 8, 2014Publication date: March 24, 2016Applicant: KT MICRO, INC.Inventors: Dianyu CHEN, Yihai XIANG, Haiqing LIN, Pan MU, Yanqing WU, Hekai KANG, Dongfeng ZHOU, Yuqiang YUAN, Wenhui YUAN, Jinfeng WU
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Patent number: 8862089Abstract: A circuit for a front-end tunable filter of a communication and broadcast receiver and a tuning method thereof are described herein. In one aspect, the circuit of the tunable filter may be independent of the signal reception link of the receiver. The pre-filter (104) includes a variable capacitance (146) which is adjusted by a tuning signal (160). A negative resistance element (144) and the pre-filter (104) may form an oscillator. The negative resistance element (144) is controlled by an amplitude control signal (162) outputted from an oscillation amplitude control circuit (142). The oscillation amplitude control circuit (142) stabilizes the amplitude of a radio frequency signal (130) in a preset range. An oscillation frequency control circuit (140) stabilizes the frequency of the signal (130) in a preset frequency range by a tuning signal (160). The tuning is completed until both of the amplitude and the frequency of the oscillation signal meet the preset ranges.Type: GrantFiled: October 18, 2012Date of Patent: October 14, 2014Assignee: Beijing KT Micro, Ltd.Inventors: Han Wang, Yi Yang, Zhen Li, Pei Yang, Dianyu Chen, Haiqing Lin, Yihai Xiang, Zhongzhi Liu
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Patent number: 8564467Abstract: A method and device for generating an adjustable signal includes a voltage generator configured to continuously adjust an output voltage and output the voltage, a ?? modulator configured to output a digital signal of pre-determined-cycle based on the output voltage and a reference voltage, a counter configured to count the number of a target level in the digital signal of a pre-determined number of cycles, and a digital signal generator configured to generate a target signal based on the number of the target level. The method and device may improve the accuracy of the generated signal while remaining the same feel of continuous adjustment.Type: GrantFiled: September 30, 2011Date of Patent: October 22, 2013Assignee: Beijing KT Micro, Ltd.Inventors: Pei Yang, Rongrong Bai, Jianting Wang, Yaoli Jiang, Dianyu Chen, Yan Qi, Rui Wang, Zhen Li, Shizhu Chen, Xiuli Feng, Bo Tang, Zhongzhi Liu, Haiqing Lin, Yihai Xiang
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Publication number: 20130268278Abstract: An audio communication system, an audio transmitter and an audio receiver are described herein. In one aspect, the audio transmitter includes: An analog to digital converter configured to convert an analog audio signal into a digital audio signal; a digital compressor configured to compress the dynamic range of said digital audio signal; a digital modulator configured to modulate the compressed digital audio signal into a wireless communication signal; and the analog to digital converter, the digital compressor and the digital modulator are integrated in one integrated circuit. The described devices improve the compression and expansion device linearity, resulting in better match for the compressor at the transmitter and the expandor at the receiver.Type: ApplicationFiled: June 18, 2012Publication date: October 10, 2013Applicant: Beijing KT Micro, Ltd.Inventors: Xufang Li, Zhen Li, Yihai Xiang, Pei Yang, Fubin Zhang
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Publication number: 20130040595Abstract: A circuit for a front-end tunable filter of a communication and broadcast receiver and a tuning method thereof are described herein. In one aspect, the circuit of the tunable filter may be independent of the signal reception link of the receiver. The pre-filter (104) includes a variable capacitance (146) which is adjusted by a tuning signal (160). A negative resistance element (144) and the pre-filter (104) may form an oscillator. The negative resistance element (144) is controlled by an amplitude control signal (162) outputted from an oscillation amplitude control circuit (142). The oscillation amplitude control circuit (142) stabilizes the amplitude of a radio frequency signal (130) in a preset range. An oscillation frequency control circuit (140) stabilizes the frequency of the signal (130) in a preset frequency range by a tuning signal (160). The tuning is completed until both of the amplitude and the frequency of the oscillation signal meet the preset ranges.Type: ApplicationFiled: October 18, 2012Publication date: February 14, 2013Applicant: BEIJING KT MICRO, LTD.Inventors: Han Wang, Yi Yang, Zhen Li, Pei Yang, Dianyu Chen, Haiqing Lin, Yihai Xiang, Zhongzhi Liu
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Publication number: 20120248549Abstract: A method for improving the reverse breakdown voltage between P-well and N-well and related semiconductor silicon devices are described herein. In one aspect, a semiconductor silicon device comprises a substrate; a P-well in said substrate; an N-well in said substrate; wherein said N-well and said P-well are separated by said substrate. In another aspect, a method for increasing the reverse breakdown voltage from P-well to N-well comprises: providing a substrate; forming an N-well and a P-well in said substrate and separating said N-well and said P-well by said substrate.Type: ApplicationFiled: September 22, 2011Publication date: October 4, 2012Applicant: BEIJING KT MICRO, LTD.Inventors: Rongrong Bai, Zhongzhi Liu, Jing Cao, Yihai Xiang
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Publication number: 20120127008Abstract: An adjustable signal generating device and related method for generating the adjustable signal are described herein. The adjustable signal generating device includes: a voltage generator configured to continuously adjust an output voltage and output the voltage; a ?? modulator configured to output a digital signal of pre-determined-cycle based on the output voltage and a reference voltage; a counter configured to count the number of a target level in the digital signal of a pre-determined number of cycles; and a digital signal generator configured to generate a target signal based on the number of the target level. The described method and device improve the accuracy of the generated signal while remaining the same feel of continuous adjustment.Type: ApplicationFiled: September 30, 2011Publication date: May 24, 2012Applicant: BEIJING KT MICRO, LTD.Inventors: Pei Yang, Rongrong Bai, Jianting Wang, Yaoli Jiang, Dianyu Chen, Yan Qi, Rui Wang, Zhen Li, Shizhu Chen, Xiuli Feng, Bo Tang, Zhongzhi Liu, Haiqing Lin, Yihai Xiang
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METHOD AND APPARATUS FOR DETECTING INTERRUPTION OF AN INPUT SIGNAL WITH CANCELLATION OF OFFSET LEVEL
Publication number: 20040251969Abstract: An input branch of a loss-of-signal (LOS) detector is coupled to a first input of a comparator. A threshold branch of the LOS detector is coupled to a second input of the comparator. An operational amplifier is connected between the input branch and the threshold branch to couple an offset level from the input branch to the threshold branch. The offset level is then cancelled at the comparator.Type: ApplicationFiled: June 11, 2003Publication date: December 16, 2004Inventors: Cindra W. Abidin, Georgios Asmanis, Yihai Xiang -
Method and apparatus for detecting interruption of an input signal with cancellation of offset level
Patent number: 6831521Abstract: An input branch of a loss-of-signal (LOS) detector is coupled to a first input of a comparator. A threshold branch of the LOS detector is coupled to a second input of the comparator. An operational amplifier is connected between the input branch and the threshold branch to couple an offset level from the input branch to the threshold branch. The offset level is then cancelled at the comparator.Type: GrantFiled: June 11, 2003Date of Patent: December 14, 2004Assignee: Intel CorporationInventors: Cindra W. Abidin, Georgios Asmanis, Yihai Xiang -
Patent number: 6452424Abstract: A multiple channel signal processing circuit receives an input associated with a first channel and an input associated with a second channel. The respective inputs are sampled and processed by the circuit, which generates a sampled output signal for the first channel and a sampled output signal for the second channel. The circuit employs a shared active circuit component, such as an operational amplifier, to alternately process samples associated with the first and second channels. A network of switches are controlled by a multiphase clock signal such that the active circuit component processes samples associated with only one channel at a time; as the input for a first channel is being sampled, a previous sample for the second channel is processed. An alternate circuit embodiment may be utilized to reduce the amount of crosstalk between the channels.Type: GrantFiled: September 28, 1999Date of Patent: September 17, 2002Assignee: Conexant Systems, Inc.Inventors: Daryush Shamlou, Guang-Ming Yin, Yihai Xiang, Wim Cops, Bo Zhang