Patents by Inventor Yu-Chuan FANG
Yu-Chuan FANG 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: 11974371Abstract: A light-emitting diode LED driver and a LED driving device including the LED driver are provided. The light-emitting diode LED driver includes a decoding circuit that receives a data signal and decodes the data signal to generate display data used to drive LEDs to emit light and display and a recovered clock signal. Further provided is an encoding circuit that encodes the decoded display data by using the recovered clock signal to generate an encoded data signal, where the data signal is encoded in a first encoding format, and the encoded data signal is encoded in a second encoding format.Type: GrantFiled: July 29, 2021Date of Patent: April 30, 2024Assignee: NOVATEK MICROELECTRONICS CORP.Inventors: Yu-Hsiang Wang, Che-Wei Yeh, Keko-Chun Liang, Yong-Ren Fang, Yi-Chuan Liu
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Patent number: 8718101Abstract: A pilot selection method adapted for selecting rank-2 pilot patterns for a macrocell advanced base station (ABS), a femtocell ABS and a non-macrocell and non-femtocell ABS is proposed along with a wireless communication system and a base station thereof. Different rank-2 pilot pattern is selected for a femtocell ABS from its overlay macrocell ABS and non-macrocell and non-femtocell ABS rank-2 pilot patterns. Another pilot selection method for selecting a rank-1 pilot pattern for a femtocell ABS co-located with at least a macrocell ABS is also proposed. Different rank-1 pilot pattern is selected for a femtocell ABS from its overlay macrocell ABSs using rank-1 and/or rank-2 pilot patterns, where some of the macrocell ABSs can use rank-2 pilot patterns and the rest of the macrocell ABSs just use rank-1 pilot patterns. Also, different rank-1 pilot pattern is selected for the femtocell ABS from its neighboring femtocell ABSs using rank-1 pilot patterns.Type: GrantFiled: October 18, 2010Date of Patent: May 6, 2014Assignee: Acer IncorporatedInventors: Chung-Lien Ho, Chang-Lan Tsai, Yan-Xiu Zheng, Yu-Chuan Fang
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Patent number: 8705352Abstract: Prioritized random access methods are proposed. According to an embodiment, random access attempts are classified into the priority levels according to delay requirements, and adedicated random access opportunities are reserved for different priority levels. A congestion detecting mechanism is introduced for such dedicated ranging (random access) opportunities. When congestion is detected by the base station, parameters or configurations of random access can be dynamically or temporarily modified through random access response message. Furthermore, a prioritized contention resolution is introduced to guarantee a high priority access is processed earlier than a low priority access. According to another embodiment, another prioritized contention resolution is introduced to reduce the impact of random access of a low priority M2M device upon H2H traffic.Type: GrantFiled: September 2, 2011Date of Patent: April 22, 2014Assignee: Industrial Technology Research InstituteInventors: Chun-Yuan Chiu, Yung-Han Chen, Yan-Xiu Zheng, Yu-Chuan Fang
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Patent number: 8675540Abstract: A resource allocation method and a resource indication method for E-MBS system, and a mobile station using the same are proposed. The resource units of a first service flow are allocated following the end of the E-MBS MAP of the E-MBS region, along with the increasing of frequency domain index. When the edge of the E-MBS region in frequency domain is reached, the resource units of mth service flow are continued to be allocated from top frequency domain index in next time domain index, where m is an integer greater than or equal to 1. The resource units of m+1th service flow are allocated following the mth service flow, and such procedures are repeated until all service flows are allocated required resource units. The resource indication method indicates a specific service flow by absolute location in the E-MBS region formed based upon the resource allocation method.Type: GrantFiled: December 1, 2010Date of Patent: March 18, 2014Assignee: Acer IncorporatedInventors: Yan-Xiu Zheng, Yu-Chuan Fang, Tsung-Lien Ho, Chun-Yuan Chiu, Chang-Lan Tsai
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Patent number: 8677204Abstract: A method of error control, including forming a plurality of first data symbols from a plurality of data bits, transmitting a first signal including the plurality of first data symbols, receiving a request for retransmission, forming a plurality of second data symbols from the plurality of data bits, and transmitting a second signal including the plurality of second data symbols. At least one of the first data symbols is formed from several of the plurality of data bits such that none of the second data symbols is formed from the several of the plurality of data bits.Type: GrantFiled: May 4, 2009Date of Patent: March 18, 2014Assignee: Industrial Technology Research InstituteInventors: Yu-Chuan Fang, Ren-Jr Chen
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Patent number: 8514888Abstract: A method for subblock generation in a wireless communication system includes receiving, by a subblock generator, one or more data blocks, and selecting, based on one or more criteria, one or more functional blocks and an operational order of the one or more functional blocks. The method also includes processing the received one or more data blocks using the selected one or more functional blocks in the selected operational order to generate a plurality of data subblocks, and transmitting the plurality of data subblocks to the plurality of receiving devices. The method further includes transmitting, to the plurality of receiving devices, location information for each of the plurality of data subblocks.Type: GrantFiled: September 10, 2009Date of Patent: August 20, 2013Assignee: Industrial Technology Research InstituteInventors: Ren-Jr Chen, Yu-Chuan Fang
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Patent number: 8510621Abstract: A method of providing resource unit based data block partitioning may include determining, for a bit stream to be encoded in a coding scheme including an upper layer coding and a physical layer coding, whether upper layer coding is enabled. The method may further include, in response to the upper layer coding being enabled, partitioning the bit stream into one or more blocks for forward error correction coding. The one or more blocks may have a block size determined based on a size of a resource unit. The resource unit size may correspond to one or more units predefined in the physical layer for the resource allocation. A corresponding apparatus is also provided.Type: GrantFiled: December 22, 2010Date of Patent: August 13, 2013Assignee: Industrial Technology Research InstituteInventors: Yan-Xiu Zhang, Yu-Chuan Fang, Chang-Lan Tsai, Chung-Lien Ho
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Patent number: 8416871Abstract: The present invention discloses a transmission method and apparatus for a wireless communication system. The data transmission method comprises the following steps. A first data mapped in a QAM constellation pattern is transmitted in a first transmission. And a second data, which is reversion of the first data and mapped in said QAM constellation pattern, is retransmitted. In embodiment, the interleaved data is partially swapped based on a predetermined swapping pattern. In another embodiment, first interleaved data and second interleaved data are multiplexed per N bits, N is an integer larger than 1. Therefore, improvement of reliability at first transmission or retransmission in a wireless communication system can be achieved.Type: GrantFiled: March 2, 2010Date of Patent: April 9, 2013Assignee: Acer IncorporatedInventors: Yan-Xiu Zheng, Yu-Chuan Fang
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Publication number: 20120063305Abstract: Prioritized random access methods are proposed. According to an embodiment, random access attempts are classified into the priority levels according to delay requirements, and adedicated random access opportunities are reserved for different priority levels. A congestion detecting mechanism is introduced for such dedicated ranging (random access) opportunities. When congestion is detected by the base station, parameters or configurations of random access can be dynamically or temporarily modified through random access response message. Furthermore, a prioritized contention resolution is introduced to guarantee a high priority access is processed earlier than a low priority access. According to another embodiment, another prioritized contention resolution is introduced to reduce the impact of random access of a low priority M2M device upon H2H traffic.Type: ApplicationFiled: September 2, 2011Publication date: March 15, 2012Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chun-Yuan Chiu, Yung-Han Chen, Yan-Xiu Zheng, Yu-Chuan Fang
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Publication number: 20110158148Abstract: A resource allocation method and a resource indication method for E-MBS system, and a mobile station using the same are proposed. The resource units of a first service flow are allocated following the end of the E-MBS MAP of the E-MBS region, along with the increasing of frequency domain index. When the edge of the E-MBS region in frequency domain is reached, the resource units of mth service flow are continued to be allocated from top frequency domain index in next time domain index, where m is an integer greater than or equal to 1. The resource units of m+1th service flow are allocated following the mth service flow, and such procedures are repeated until all service flows are allocated required resource units. The resource indication method indicates a specific service flow by absolute location in the E-MBS region formed based upon the resource allocation method.Type: ApplicationFiled: December 1, 2010Publication date: June 30, 2011Applicant: ACER INCORPORATEDInventors: Yan-Xiu Zheng, Yu-Chuan Fang, Tsung-Lien Ho, Chun-Yuan Chiu, Chang-Lan Tsai
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Publication number: 20110161771Abstract: A method of providing resource unit based data block partitioning may include determining, for a bit stream to be encoded in a coding scheme including an upper layer coding and a physical layer coding, whether upper layer coding is enabled. The method may further include, in response to the upper layer coding being enabled, partitioning the bit stream into one or more blocks for forward error correction coding. The one or more blocks may have a block size determined based on a size of a resource unit. The resource unit size may correspond to one or more units predefined in the physical layer for the resource allocation. A corresponding apparatus is also provided.Type: ApplicationFiled: December 22, 2010Publication date: June 30, 2011Inventors: Yan-Xiu Zheng, Yu-Chuan Fang, Chang-Lan Tsai, Chung-Lien Ho
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Publication number: 20110159882Abstract: A pilot selection method adapted for selecting rank-2 pilot patterns for a macrocell advanced base station (ABS), a femtocell ABS and a non-macrocell and non-femtocell ABS is proposed along with a wireless communication system and a base station thereof. Different rank-2 pilot pattern is selected for a femtocell ABS from its overlay macrocell ABS and non-macrocell and non-femtocell ABS rank-2 pilot patterns. Another pilot selection method for selecting a rank-1 pilot pattern for a femtocell ABS co-located with at least a macrocell ABS is also proposed. Different rank-1 pilot pattern is selected for a femtocell ABS from its overlay macrocell ABSs using rank-1 and/or rank-2 pilot patterns, where some of the macrocell ABSs can use rank-2 pilot patterns and the rest of the macrocell ABSs just use rank-1 pilot patterns. Also, different rank-1 pilot pattern is selected for the femtocell ABS from its neighboring femtocell ABSs using rank-1 pilot patterns.Type: ApplicationFiled: October 18, 2010Publication date: June 30, 2011Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTEInventors: Chung-Lien Ho, Chang-Lan Tsai, Yan-Xiu Zheng, Yu-Chuan Fang
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Publication number: 20100220799Abstract: The present invention discloses a transmission method and apparatus for a wireless communication system. The data transmission method comprises the following steps. A first data mapped in a QAM constellation pattern is transmitted in a first transmission. And a second data, which is reversion of the first data and mapped in said QAM constellation pattern, is retransmitted. In embodiment, the interleaved data is partially swapped based on a predetermined swapping pattern. In another embodiment, first interleaved data and second interleaved data are multiplexed per N bits, N is an integer larger than 1. Therefore, improvement of reliability at first transmission or retransmission in a wireless communication system can be achieved.Type: ApplicationFiled: March 2, 2010Publication date: September 2, 2010Applicant: ACER INCORPORATEDInventors: YAN-XIU ZHENG, YU-CHUAN FANG
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Publication number: 20100067425Abstract: A method for subblock generation in a wireless communication system includes receiving, by a subblock generator, one or more data blocks, and selecting, based on one or more criteria, one or more functional blocks and an operational order of the one or more functional blocks. The method also includes processing the received one or more data blocks using the selected one or more functional blocks in the selected operational order to generate a plurality of data subblocks, and transmitting the plurality of data subblocks to the plurality of receiving devices. The method further includes transmitting, to the plurality of receiving devices, location information for each of the plurality of data subblocks.Type: ApplicationFiled: September 10, 2009Publication date: March 18, 2010Inventors: Ren-Jr CHEN, Yu-Chuan FANG
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Publication number: 20090276671Abstract: A method of error control, including forming a plurality of first data symbols from a plurality of data bits, transmitting a first signal including the plurality of first data symbols, receiving a request for retransmission, forming a plurality of second data symbols from the plurality of data bits, and transmitting a second signal including the plurality of second data symbols. At least one of the first data symbols is formed from several of the plurality of data bits such that none of the second data symbols is formed from the several of the plurality of data bits.Type: ApplicationFiled: May 4, 2009Publication date: November 5, 2009Inventors: Yu-Chuan FANG, Ren-Jr CHEN