Patents by Inventor Tzi-Dar Chiueh
Tzi-Dar Chiueh 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: 20240055033Abstract: A computing-in-memory circuitry includes multiple digital-to-analog converters, multiple computing arrays, and multiple charge processing networks. The digital-to-analog converters convert external data into input data and the digital-to-analog converters are connected in series with a corresponding plurality of output capacitor pairs. The computing arrays receive the input data from both ends and execute a computation to output a first computing value. The charge processing networks receive and accumulate the first computing values over a predetermined time interval through switching pairs in series with the output capacitor pairs. The charge processing networks evenly distribute charges of the first computing value to selected output capacitor pairs and compare voltage differences between two ends of the output capacitor pairs to output a second computing value.Type: ApplicationFiled: August 9, 2022Publication date: February 15, 2024Applicant: National Taiwan UniversityInventors: Ying-Tuan Hsu, Tsung-Te Liu, Tzi-Dar Chiueh
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Patent number: 11316540Abstract: A method of decoding polar codes based on belief propagation includes conventional belief propagation to decode the polar codes first; when a number of iterations exceeds a predefined upper limit and a cyclic redundancy check fails, the method selects log-likelihood ratio vectors of a plurality of R or L messages from a plurality of log-likelihood ratio vectors generated in each of the iterations and generates another set of log-likelihood ratio vectors (referred to as candidate vector group) to be used as initial values of the R or L messages for a subsequent belief propagation to perform belief propagation decoding iterations and cyclic redundancy check again. Whenever a decoding result passes the cyclic redundancy check, the method exits; otherwise, the method iterates the above procedure until a maximum number of candidate vector groups has been reached.Type: GrantFiled: September 16, 2020Date of Patent: April 26, 2022Assignee: NATIONAL TAIWAN UNIVERSITYInventors: Tzi-Dar Chiueh, Bei-Sheng Su
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Publication number: 20210376863Abstract: A method of decoding polar codes based on belief propagation includes conventional belief propagation to decode the polar codes first; when a number of iterations exceeds a predefined upper limit and a cyclic redundancy check fails, the method selects log-likelihood ratio vectors of a plurality of R or L messages from a plurality of log-likelihood ratio vectors generated in each of the iterations and generates another set of log-likelihood ratio vectors (referred to as candidate vector group) to be used as initial values of the R or L messages for a subsequent belief propagation to perform belief propagation decoding iterations and cyclic redundancy check again. Whenever a decoding result passes the cyclic redundancy check, the method exits; otherwise, the method iterates the above procedure until a maximum number of candidate vector groups has been reached.Type: ApplicationFiled: September 16, 2020Publication date: December 2, 2021Inventors: Tzi-Dar CHIUEH, Bei-Sheng SU
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Patent number: 11170297Abstract: A method of training a neural network including multiple neural network weights and multiple neurons, and the method includes using floating-point signed digit numbers to represent each of the multiple neural network weights, wherein a mantissa of each of the multiple neural network weights is represented by multiple mantissa signed digit groups and an exponent of each of the multiple neural network weights is represented by an exponent digit group; and using the exponent digit group and at least one of the multiple mantissa signed digit groups to perform weight adjustment computation and neural network inference computation.Type: GrantFiled: June 5, 2018Date of Patent: November 9, 2021Assignee: NATIONAL TAIWAN UNIVERSITYInventors: Tzi-Dar Chiueh, Po-Chen Lin
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Publication number: 20190303756Abstract: A method of training a neural network including multiple neural network weights and multiple neurons, and the method includes using floating-point signed digit numbers to represent each of the multiple neural network weights, wherein a mantissa of each of the multiple neural network weights is represented by multiple mantissa signed digit groups and an exponent of each of the multiple neural network weights is represented by an exponent digit group; and using the exponent digit group and at least one of the multiple mantissa signed digit groups to perform weight adjustment computation and neural network inference computation.Type: ApplicationFiled: June 5, 2018Publication date: October 3, 2019Inventors: Tzi-Dar Chiueh, Po-Chen Lin
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Patent number: 10222442Abstract: A method and apparatus for single carrier wideband magnetic resonance imaging (MRI) data acquisition are provided. The method includes the following steps: exciting a slice or slab with the use of RF pulse and a slice/slab selection gradient; applying a phase encoding gradient along a phase encoding direction and reducing a FOV along the phase encoding direction by a factor of W through k-space subsampling; applying a frequency encoding gradient along a frequency encoding direction and increasing a FOV along the frequency encoding direction by a factor of Wf; and applying a separation gradient along the phase encoding direction during the frequency encoding duration and k-space data acquisition.Type: GrantFiled: April 17, 2014Date of Patent: March 5, 2019Assignee: NATIONAL TAIWAN UNIVERSITYInventors: Jyh-Horng Chen, Tzi-Dar Chiueh, Edzer Lienson Wu, Yun-An Huang
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Publication number: 20170257181Abstract: A method for reducing an inter-cell interference (ICI) and an inter-antenna interference (IAI) in a wireless communication system is disclosed. The method includes generating a first candidate signal list and a second candidate signal list, wherein the first candidate signal list relates to transmission data signals, and the second candidate signal list relates to interference signals; processing, via a detector, a first loop operation, and processing, via a decoder, a second loop operation, to update the first candidate signal list and the second candidate signal list; and after iteratively processing the first loop operation and the second loop operation, utilizing the updated first candidate signal list and the updated second candidate signal list to recover the transmission data signal with less complexity and latency.Type: ApplicationFiled: March 7, 2016Publication date: September 7, 2017Inventors: Tzi-Dar Chiueh, Yi-Yao Lan
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Patent number: 9632157Abstract: The present invention discloses a 3-dimension magnetic resonance imaging method which comprises: applying a slab selection gradient to a subject; transmitting a radiofrequency pulse to the subject, and exciting a slab of the subject to produce magnetic resonance signals with a continuous frequency bandwidth; performing a spatial encoding gradient across three dimensions to encode the magnetic resonance signals, wherein an equivalent encoded field of view which along the selected acceleration direction is controlled by the spatial encoding gradient, and the equivalent encoded field of view is shorter than the excited slab size of the subject; applying a separation gradient along with the spatial encoding gradient; and receiving and reconstructing the encoded magnetic resonance signals to produce 3D images.Type: GrantFiled: March 29, 2013Date of Patent: April 25, 2017Assignee: NATIONAL TAIWAN UNIVERSITYInventors: Jyh-Horng Chen, Tzi-Dar Chiueh, Edzer Lienson Wu, Yun-An Huang
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Publication number: 20170089609Abstract: The ignition system includes a mini hydroelectric generator module connecting an inlet pipe for generating electricity by water flow passing through the inlet pipe and it; a power quality monitoring module electrically connecting the mini hydroelectric generator module for monitoring output electricity quality of the mini hydroelectric generator module and switching on/off the electricity; an ignitor electrically connecting the power quality monitoring module for receiving electricity from the power quality monitoring module to ignite; and an electronic valve electrically connecting the power quality monitoring module for receiving electricity from the power quality monitoring module to switch on/off a gas pipe.Type: ApplicationFiled: March 3, 2016Publication date: March 30, 2017Applicant: National Applied Research LaboratoriesInventors: Tzi-Dar Chiueh, Chun-Ming Huang, Chen-Chia Chen, Chien-Ming Wu
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Patent number: 9503996Abstract: The present invention provides a method and an apparatus for cell search and synchronization for subscriber stations of the Long Term Evolution (LTE) system. The invention uses primary synchronizing signal of primary synchronization code in each frame structure to establish synchronization with the base station when a subscriber station accesses the LTE network. With such synchronization between the subscriber station and the base station, control signals and transmission data may be correctly exchanged between them.Type: GrantFiled: July 28, 2014Date of Patent: November 22, 2016Assignee: NATIONAL TAIWAN UNIVERSITYInventors: Tzi-Dar Chiueh, Chun-Yuan Chu, Yi-Yao Lan
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Publication number: 20150208369Abstract: The present invention provides a method and an apparatus for cell search and synchronization for subscriber stations of the Long Term Evolution (LTE) system. The invention uses primary synchronizing signal of primary synchronization code in each frame structure to establish synchronization with the base station when a subscriber station accesses the LTE network. With such synchronization between the subscriber station and the base station, control signals and transmission data may be correctly exchanged between them.Type: ApplicationFiled: July 28, 2014Publication date: July 23, 2015Inventors: Tzi-Dar CHIUEH, Chun-Yuan CHU, Yi-Yao LAN
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Publication number: 20140312899Abstract: A method and apparatus for single carrier wideband magnetic resonance imaging (MRI) data acquisition are provided. The method includes the following steps: exciting a slice or slab with the use of RF pulse and a slice/slab selection gradient; applying a phase encoding gradient along a phase encoding direction and reducing a FOV along the phase encoding direction by a factor of W through k-space subsampling; applying a frequency encoding gradient along a frequency encoding direction and increasing a FOV along the frequency encoding direction by a factor of Wf; and applying a separation gradient along the phase encoding direction during the frequency encoding duration and k-space data acquisition.Type: ApplicationFiled: April 17, 2014Publication date: October 23, 2014Applicant: National Taiwan UniversityInventors: Jyh-Horng Chen, Tzi-Dar Chiueh, Edzer Lienson Wu, Yun-An Huang
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Publication number: 20140292326Abstract: The present invention discloses a 3-dimension magnetic resonance imaging method which comprises: applying a slab selection gradient to a subject; transmitting a radiofrequency pulse to the subject, and exciting a slab of the subject to produce magnetic resonance signals with a continuous frequency bandwidth; performing a spatial encoding gradient across three dimensions to encode the magnetic resonance signals, wherein an equivalent encoded field of view which along the selected acceleration direction is controlled by the spatial encoding gradient, and the equivalent encoded field of view is shorter than the excited slab size of the subject; applying a separation gradient along with the spatial encoding gradient; and receiving and reconstructing the encoded magnetic resonance signals to produce 3D images.Type: ApplicationFiled: March 29, 2013Publication date: October 2, 2014Applicant: National Taiwan UniversityInventors: Jyh-Horng Chen, Tzi-Dar Chiueh, Edzer Lienson Wu, Yun-An Huang
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Patent number: 8773128Abstract: A method and an apparatus for enhancing signals in magnetic resonance imaging are provided. The method includes the following steps. Applying one or more than one RF pulse, which carries at least two frequency components, and a slice/slab selection gradient to a subject, so that at least two slices/slabs of the subject respectively corresponding to the at least two frequency components are excited simultaneously. Applying a plurality of spatial encoding gradients and one or more than one separation gradients for separating the at least two slices/slabs. Receiving a plurality of responsive RF signals excited from the subject. The responsive RF signals are restored according to a signal restoration function.Type: GrantFiled: August 15, 2011Date of Patent: July 8, 2014Assignee: National Taiwan UniversityInventors: Jyh-Horng Chen, Tzi-Dar Chiueh, Edzer L. Wu
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Patent number: 8761136Abstract: A method for eliminating interference in a receiver (RX) includes: obtaining Bluetooth (BT) information and wireless local area network (Wireless LAN, WLAN) information by performing detection on at least one RX signal, wherein the RX signal is received through an antenna of the RX, and the RX signal includes components of both a BT signal and a WLAN signal that are respectively emitted from at least one transmitter (TX); and performing maximum likelihood (ML) joint detection on frequency representatives of the RX signal according to the BT information and the WLAN information and according to a predetermined library, in order to extract at least one of a reproduced version of the BT signal and a reproduced version of the WLAN signal. An associated apparatus is also provided.Type: GrantFiled: December 21, 2010Date of Patent: June 24, 2014Assignees: Mediatek Inc., National Taiwan UniversityInventors: Tzi-Dar Chiueh, Ching-Ting Huang
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Patent number: 8692550Abstract: A method for acquiring MRI signals includes: applying one or more than one RF pulse, which carries at least two frequency components, and a slice/slab selection gradient to a subject, so that at least two slices/slabs of the subject respectively corresponding to the at least two frequency components are excited simultaneously; applying a plurality of spatial encoding gradients; applying a plurality of separation gradients for separating the at least two slices/slabs; and applying at least one coherent refocusing gradient between the plurality of separation gradients.Type: GrantFiled: March 17, 2011Date of Patent: April 8, 2014Assignee: National Taiwan UniversityInventors: Jyh-Horng Chen, Tzi-Dar Chiueh, Edzer L. Wu
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Patent number: 8664952Abstract: A diffusion imaging method is provided. The diffusion imaging method includes performing a plurality of data collection sequences. Each data collection sequence includes applying an excitation radio frequency signal and a selection gradient. The excitation radio frequency signal includes a first set of frequency bands selected to simultaneously excite a first nuclei type in a plurality of cross sections of a subject. Each data collection sequence further includes applying a diffusion gradient during formation of a magnetic resonance signal, applying a spatial encoding gradient during formation of the magnetic resonance signal, and while acquiring the magnetic resonance signal, applying a separation gradient to change a frequency separation between portions of the magnetic resonance signal. The diffusion imaging method further includes computationally determining a diffusion image of each of the plurality of cross sections.Type: GrantFiled: April 18, 2011Date of Patent: March 4, 2014Assignee: National Taiwan UniversityInventors: Jyh-Horng Chen, Tzi-Dar Chiueh, Edzer L. Wu
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Patent number: 8305251Abstract: A wireless remote control system is provided. This system includes a remote controller, plural detectors, and a decision module. The detectors are used for detecting the frequency a wireless signal emitted by the remote controller and respectively generate a detecting result. Based on at least one frequency difference between the detecting results, the decision module determines how the remote controller is moving and thereby generates a control signal. Because the decision module needs no knowledge of the frequency of the emitted wireless signal, the wireless remote controller has the advantages of small size, low cost, and low power consumption.Type: GrantFiled: February 9, 2010Date of Patent: November 6, 2012Assignee: National Taiwan UniversityInventor: Tzi-Dar Chiueh
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Publication number: 20120235682Abstract: A method for acquiring MRI signals includes: applying one or more than one RF pulse, which carries at least two frequency components, and a slice/slab selection gradient to a subject, so that at least two slices/slabs of the subject respectively corresponding to the at least two frequency components are excited simultaneously; applying a plurality of spatial encoding gradients; applying a plurality of separation gradients for separating the at least two slices/slabs; and applying at least one coherent refocusing gradient between the plurality of separation gradients.Type: ApplicationFiled: March 17, 2011Publication date: September 20, 2012Applicant: NATIONAL TAIWAN UNIVERSITYInventors: Jyh-Horng Chen, Tzi-Dar Chiueh, Edzer L. Wu
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Publication number: 20120155444Abstract: A method for eliminating interference in a receiver (RX) includes: obtaining Bluetooth (BT) information and wireless local area network (Wireless LAN, WLAN) information by performing detection on at least one RX signal, wherein the RX signal is received through an antenna of the RX, and the RX signal includes components of both a BT signal and a WLAN signal that are respectively emitted from at least one transmitter (TX); and performing maximum likelihood (ML) joint detection on frequency representatives of the RX signal according to the BT information and the WLAN information and according to a predetermined library, in order to extract at least one of a reproduced version of the BT signal and a reproduced version of the WLAN signal. An associated apparatus is also provided.Type: ApplicationFiled: December 21, 2010Publication date: June 21, 2012Inventors: Tzi-Dar Chiueh, Ching-Ting Huang