Patents by Inventor Tiancai Liang

Tiancai Liang 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).

  • Patent number: 10490011
    Abstract: A flattening device includes: a holder configured to support the following components; at least one flattening roller set, including a first flattening roller and a second flattening roller arranged oppositely at two sides of a sheet medium conveying path; and a power mechanism configured to drive the first and second flattening rollers to rotate. A surface of the first flattening roller is distributed with n arc-shaped grooves arranged in parallel with an axis direction of the first flattening roller, wherein n is a natural number greater than or equal to 1; and a surface of the second flattening roller is provided with at least one arc-shaped protruding portion in rolling engagement with the arc-shaped grooves of the first flattening roller; and wherein, the first flattening roller and the second flattening roller are in rolling engagement to form a conveying passage for the sheet medium.
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: November 26, 2019
    Assignee: GRG BANKING EQUIPMENT CO., LTD.
    Inventors: Tiancai Liang, Chengye Zhang, Daoyu Liu, Fei Zhao, Minjie Fang
  • Patent number: 10417532
    Abstract: Provided are a method and a device for offline identity authentication. The method includes: acquiring two or more images for identity authentication to constitute a to-be-authenticated multivariate image group; extracting a concatenated PCA convolution feature of each of the images in the to-be-authenticated multivariate image group, to obtain feature vectors; fusing information on the images in the to-be-authenticated multivariate image group based on the feature vectors according to a score fusion strategy with a supervisory signal, to obtain a fusion vector; and inputting the fusion vector to a pre-trained SVM classifier to authenticate and determine whether the images in the to-be-authenticated multivariate image group are consistent with one another, to obtain an identity authentication result.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: September 17, 2019
    Assignee: GRG Banking Equipment Co., Ltd.
    Inventors: Tiancai Liang, Dandan Xu, Yong Zhang
  • Patent number: 10388099
    Abstract: Provided are a device and method for identifying a paper currency fold. The device includes: a transparent protective body, configured to maintain components in the device to be clean; a laser source, configured to emit laser light a rectangular grating, configured to modulate the laser light into stripes which changes to be bright or dark according to a certain rule on a surface of a paper currency; an area array photoelectric sensor, configured to capture an image; an imaging lens group, configured to converge an image of the surface of the paper currency onto the area array photoelectric sensor; and an information processing module electrically connected with the area array photoelectric sensor, configured to process an image signal captured by the area array photoelectric sensor.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: August 20, 2019
    Assignee: GRG BANKING EQUIPMENT CO., LTD.
    Inventors: Panfeng Luo, Tiancai Liang, Xiaofeng Jin, Yong Zhang
  • Publication number: 20190051081
    Abstract: A flattening device includes: a holder configured to support the following components; at least one flattening roller set, including a first flattening roller and a second flattening roller arranged oppositely at two sides of a sheet medium conveying path; and a power mechanism configured to drive the first and second flattening rollers to rotate. A surface of the first flattening roller is distributed with n arc-shaped grooves arranged in parallel with an axis direction of the first flattening roller, wherein n is a natural number greater than or equal to 1; and a surface of the second flattening roller is provided with at least one arc-shaped protruding portion in rolling engagement with the arc-shaped grooves of the first flattening roller; and wherein, the first flattening roller and the second flattening roller are in rolling engagement to form a conveying passage for the sheet medium.
    Type: Application
    Filed: June 6, 2016
    Publication date: February 14, 2019
    Applicant: GRG BANKING EQUIPMENT CO., LTD.
    Inventors: Tiancai LIANG, Chengye ZHANG, Daoyu LIU, Fei ZHAO, Minjie FANG
  • Publication number: 20190042895
    Abstract: Provided are a method and a device for offline identity authentication. The method includes: acquiring two or more images for identity authentication to constitute a to-be-authenticated multivariate image group; extracting a concatenated PCA convolution feature of each of the images in the to-be-authenticated multivariate image group, to obtain feature vectors; fusing information on the images in the to-be-authenticated multivariate image group based on the feature vectors according to a score fusion strategy with a supervisory signal, to obtain a fusion vector; and inputting the fusion vector to a pre-trained SVM classifier to authenticate and determine whether the images in the to-be-authenticated multivariate image group are consistent with one another, to obtain an identity authentication result.
    Type: Application
    Filed: June 12, 2017
    Publication date: February 7, 2019
    Applicant: GRG Banking Equipment Co., Ltd.
    Inventors: Tiancai Liang, Dandan Xu, Yong Zhang
  • Publication number: 20180324345
    Abstract: A method for controlling a camera is provided. An image transmitted from a camera is received and detection is performed on the image, where if a target object is not detected, a search instruction for controlling the camera to rotate in a vertical direction is transmitted to the camera until the target object is detected in an image. Then posture parameters of the target object in the image are acquired, where if the posture parameters do not match a preset posture parameter criteria, a fine adjustment instruction for controlling the camera to rotate and move is transmitted to the camera, until the posture parameters of the target object match the preset posture parameter criteria. A device for controlling a camera and a financial device terminal are further provided.
    Type: Application
    Filed: May 10, 2016
    Publication date: November 8, 2018
    Applicant: GRG Banking Equipment Co., Ltd.
    Inventors: Tiancai Liang, Yunyun Nie, Yong Zhang, Daoyu Liu, Wenchuan Gong
  • Patent number: 10121302
    Abstract: A note image acquiring system includes: a fiber laser, a fiber beam splitter, a fiber collimator, a laser beam expander, a lithium niobate intensity modulator array, a waveform generator, a signal amplifier, a polarization beam splitter, a quarter-wave plate, an imaging lens group, a line-array photosensitive chip, an image information processing module and an image combining module. The note image acquiring system can improve resolution of details of a note image without needing to increase the number of photosensitive chip units per unit length of a linear array image sensor.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: November 6, 2018
    Assignee: GRG Banking Equipment Co., Ltd.
    Inventors: Xiaofeng Jin, Tiancai Liang, Wenchuan Gong, Jianping Liu
  • Patent number: 10113976
    Abstract: A method and device for non-contact detection of a thin medium (5) is disclosed. The device comprises a light source (1), an optical splitter (2), a reference plane (3), a linearly arrayed photoelectric detector (6), a signal processing module (4) and the thin medium (5).
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: October 30, 2018
    Assignee: GRG BANKING EQUIPMENT CO., LTD.
    Inventors: Xiaofeng Jin, Jianping Liu, Tiancai Liang, Wenchuan Gong
  • Publication number: 20180218557
    Abstract: A paper medium skew correcting device includes: a support including a pair of fixed stop plates arranged in parallel; a skew correcting tapered roller assembly including a tapered roller, a reference plate located at a large end face of the tapered roller and a transmission shaft a tapered cover plate covering on the tapered roller with a skew correcting passage formed between an inner wall of the tapered cover plate and an outer wall of the tapered roller, an auxiliary pressure roller mechanism is mounted on an outer wall of the tapered cover plate and is configured to press a paper medium against the outer wall of the tapered roller tightly, the tapered cover plate is provided with an opening; and a driving transmission assembly. The device fully uses combined action of centrifugal force and friction force to realize skew correction and conveying of the paper medium.
    Type: Application
    Filed: April 29, 2016
    Publication date: August 2, 2018
    Applicant: GRG BANKING EQUIPMENT CO., LTD.
    Inventors: Guozhong CAO, Tiancai LIANG, Hongjun WU, Keye LI
  • Patent number: 10008065
    Abstract: A method and device for banknote identification based on thickness signal identification, allowing for simple and highly efficient identification and separation of abnormal banknotes by means of combining two thickness identification methods, namely an upward-facing area identification method and a downward-facing area identification method, for banknote identification.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: June 26, 2018
    Assignee: GRG Banking Equipment Co., Ltd.
    Inventors: Xiaoliang Wang, Tiancai Liang, Guang Chen, Dingxi Chen
  • Publication number: 20180174390
    Abstract: A note image acquiring system includes: a fiber laser, a fiber beam splitter, a fiber collimator, a laser beam expander, a lithium niobate intensity modulator array, a waveform generator, a signal amplifier, a polarization beam splitter, a quarter-wave plate, an imaging lens group, a line-array photosensitive chip, an image information processing module and an image combining module. The note image acquiring system can improve resolution of details of a note image without needing to increase the number of photosensitive chip units per unit length of a linear array image sensor.
    Type: Application
    Filed: March 25, 2016
    Publication date: June 21, 2018
    Applicant: GRG Banking Equipment Co., Ltd.
    Inventors: Xiaofeng Jin, Tiancai Liang, Wenchuan Gong, Jianping Liu
  • Publication number: 20180137877
    Abstract: A noise suppressing method, a noise suppressing device and a noise suppressing system are provided. The noise suppressing method includes: receiving internal noise acquired by a reference voice acquisition mechanism and a voice signal containing external noise acquired by a primary voice acquisition mechanism, when the voice signal is inputted; extracting an internal signal feature corresponding to the internal noise, where the internal signal feature is a power spectrum frame sequence; acquiring an external approximate feature corresponding to the external noise based on the internal signal feature and a pre-set mapping formula; converting the external approximate feature into a noise signal estimate by the inverse Fourier transform; and performing a pre-set noise cancellation process on the noise signal estimate and the acquired voice signal containing the internal noise, to obtain a noise-suppressed de-noised voice signal.
    Type: Application
    Filed: May 24, 2016
    Publication date: May 17, 2018
    Applicant: GRG Banking Equipment Co., Ltd.
    Inventors: Gaofeng Du, Tiancai Liang, Jianping Liu, Xiaofeng Jin
  • Patent number: 9928677
    Abstract: A banknote recognition method based on sorter dust accumulation and a sorter. An effective region boundary is determined by using a gray-scale difference between a foreground and a background of a sensor image signal, an edge is searched for by comprehensive means of signal features of various sensors, detection direction change and secondary scanning, and finally the effective boundary of the image region is relocated, so that the detection rate and recognizing accuracy of the sorter can be greatly improved. The sorter comprises a banknote inlet, a banknote outlet, a banknote exit port, a conveying rail and a recognizing module. The recognizing module comprises two sets of CIS image sensors arranged oppositely, two sets of light transmitting plates arranged oppositely, a storage module, a detection module and a display module.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: March 27, 2018
    Assignee: GRG BANKING EQUIPMENT CO., LTD.
    Inventors: Yang Wang, Tiancai Liang
  • Patent number: 9897443
    Abstract: A thickness detection device for sheet-type medium includes a fixing frame, a reference shaft and a detection assembly shaft. A reference roller is fixedly sleeved on the reference shaft. At least one detection roller is provided on the detection assembly shaft, and the detection roller is in an elastic contact with the reference roller. The detection roller is sleeved on the detection assembly shaft by a bracket, the bracket has an elongated hole through which the bracket is sleeved on the detection assembly shaft, an elastic element is provided between an end of the elongated hole and the detection assembly shaft, and the elastic element enables the detection assembly shaft to elastically maintain a certain distance from the end of the elongated hole. Thus, thickness signal obtained is not interfered by banknote displacements in other directions, and thickness detection of the full banknote can be achieved.
    Type: Grant
    Filed: August 10, 2015
    Date of Patent: February 20, 2018
    Assignee: GRG Banking Equipment Co., Ltd.
    Inventors: Tiancai Liang, Minjie Fang, Chengye Zhang, Fei Zhao
  • Patent number: 9866727
    Abstract: An image calibration method and device. A deviation compensation coefficient of each pixel is calculated according to image data generated by strong and weak lighting parameters, and the deviation compensation coefficient is used to calibrate data of each image pixel collected and output by an image sensing unit. Therefore, the influence of inconsistency of each photosensitive element of the image sensing unit on the image greyscale can be eliminated, so that the effect of document medium image recognition is increased. The method in the embodiments of the present invention comprises: S1, acquiring a strong lighting parameter of each photosensitive element within a long exposure time and a weak lighting parameter thereof within a short exposure time; S2, acquiring image data of a sheet medium; and S3, according to the strong lighting parameter, the weak lighting parameter and the image data, calculating the calibrated image data of the sheet medium.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: January 9, 2018
    Assignee: GRG Banking Equipment Co., Ltd.
    Inventors: Qianwen Wang, Tiancai Liang, Mengtao Liu, Yifei Zhang
  • Publication number: 20170370711
    Abstract: A thickness detection device for sheet-type medium includes a fixing frame, a reference shaft and a detection assembly shaft. A reference roller is fixedly sleeved on the reference shaft. At least one detection roller is provided on the detection assembly shaft, and the detection roller is in an elastic contact with the reference roller. The detection roller is sleeved on the detection assembly shaft by a bracket, the bracket has an elongated hole through which the bracket is sleeved on the detection assembly shaft, an elastic element is provided between an end of the elongated hole and the detection assembly shaft, and the elastic element enables the detection assembly shaft to elastically maintain a certain distance from the end of the elongated hole. Thus, thickness signal obtained is not interfered by banknote displacements in other directions, and thickness detection of the full banknote can be achieved.
    Type: Application
    Filed: August 10, 2015
    Publication date: December 28, 2017
    Applicant: GRG Banking Equipment Co., Ltd.
    Inventors: Tiancai Liang, Minjie Fang, Chengye Zhang, Fei Zhao
  • Patent number: 9827599
    Abstract: A banknote recognition and classification method and system are provided. In the method and system, a large number of reliable samples which are easy to acquire currently are used to establish a sample signal degradation model which meets application requirements by means of a statistical method, sample information is input into the banknote sample signal degeneration model to acquire various banknote sample information corresponding to the brand new banknotes to be learned; the various banknote sample information is input to perform classifier learning, and a banknote classification model is output; then a classifier learns to perform classification and recognition on a sample to be recognized.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: November 28, 2017
    Assignee: GRG Banking Equipment Co., Ltd.
    Inventors: Tiancai Liang, Panfeng Luo, Siwei Liu, Dingxi Chen, Weifeng Wang
  • Publication number: 20170329659
    Abstract: A Linux system-based CEN/XFS standard architecture and a Linux system-based CEN/XFS standard implementation method are provided, for addressing the technical problem that implementation of a CEN/XFS standard on the Linux system is absent in the prior art. The Linux system-based CEN/XFS standard architecture is applicable to a financial self-service device adopting the CEN/XFS standard. The system of the financial self-service device includes: an application program layer, an XFC management layer, an SP layer and a device driver layer. In the architecture, the XFC management layer is divided into: a dedicated application layer, a universal application layer and a system service layer.
    Type: Application
    Filed: July 1, 2015
    Publication date: November 16, 2017
    Applicant: GRG BANKING EQUIPMENT CO., LTD.
    Inventors: Liepiao ZHANG, Daoyu LIU, Wenchuan GONG, Tiancai LIANG
  • Publication number: 20170315063
    Abstract: A method and device for non-contact detection of a thin medium (5) is disclosed. The device comprises a light source (1), an optical splitter (2), a reference plane (3), a linearly arrayed photoelectric detector (6), a signal processing module (4) and the thin medium (5).
    Type: Application
    Filed: July 8, 2015
    Publication date: November 2, 2017
    Applicant: GRG BANKING EQUIPMENT CO., LTD.
    Inventors: Xiaofeng JIN, Jianping LIU, Tiancai LIANG, Wenchuan GONG
  • Publication number: 20170316632
    Abstract: Provided are a device and method for identifying a paper currency fold. The device includes: a transparent protective body, configured to maintain components in the device to be clean; a laser source, configured to emit laser light a rectangular grating, configured to modulate the laser light into stripes which changes to be bright or dark according to a certain rule on a surface of a paper currency; an area array photoelectric sensor, configured to capture an image; an imaging lens group, configured to converge an image of the surface of the paper currency onto the area array photoelectric sensor; and an information processing module electrically connected with the area array photoelectric sensor, configured to process an image signal captured by the area array photoelectric sensor.
    Type: Application
    Filed: August 20, 2015
    Publication date: November 2, 2017
    Applicant: GRG BANKING EQUIPMENT CO., LTD.
    Inventors: Panfeng LUO, Tiancai LIANG, Xiaofeng JIN, Yong ZHANG