公开(公告)号：EP3258416A1

公开(公告)日：2017-12-20

申请号：EP16748537.4

申请日：2016-01-05

Applicant: BYD Company Limited

Inventor： LEI, Lei ,  XU, Kunping ,  YANG, Yun

IPC: G06K9/00

CPC classification number: G06K9/00067 ,  G06K9/00 ,  G06K9/00087 ,  G06K9/34

Abstract: The present disclosure discloses method for calculating an area of a fingerprint overlapping region, including: collecting a to-be-matched fingerprint to obtain a to-be-matched fingerprint image; searching multiple pairs of matching characteristic points between the to-be-matched fingerprint image and a preset template fingerprint image; obtaining an image offset of the to-be-matched fingerprint image according to the multiple pairs of matching characteristic points; based on the image offset, adjusting a position of the to-be-matched fingerprint image to obtain an overlapping region between the to-be-matched fingerprint image and the preset template fingerprint image; and calculating a total number of image pixels within the overlapping region, and calculating an area of the overlapping region based on the total number of image pixels within the overlapping region. In the above calculation method, by dividing the overlapping region into individual image pixels and calculating the number of image pixels in the overlapping region to calculate the area of the overlapping region, it is possible to calculate the area of the overlapping region of any shape, and the calculated area is accurate at the pixel level. Thus, the calculated area may be more accurate, facilitating subsequent calculation, making fingerprint matching more accurate, and improving the user experience. The present disclosure also discloses an electronic device.

Abstract translation: 本发明公开了一种计算指纹重叠区域面积的方法，包括：采集待匹配的指纹，得到待匹配的指纹图像; 在所述待匹配的指纹图像与预设的模板指纹图像之间查找多对匹配的特征点; 根据所述多对匹配特征点获取所述待匹配指纹图像的图像偏移量; 根据所述图像偏移调整所述待匹配指纹图像的位置，得到所述待匹配指纹图像与所述预设模板指纹图像的重叠区域; 并且计算重叠区域内的图像像素的总数，并且基于重叠区域内的图像像素的总数来计算重叠区域的面积。 在上述计算方法中，通过将重叠区域划分成单独的图像像素并计算重叠区域中的图像像素的数量以计算重叠区域的面积，可以计算任何形状的重叠区域的面积， 并且计算的面积在像素级是准确的。 这样计算得到的面积可以更加准确，便于后续计算，使得指纹匹配更加准确，提高了用户体验。 本公开还公开了一种电子设备。

公开(公告)号：EP3236386A1

公开(公告)日：2017-10-25

申请号：EP15869125.3

申请日：2015-11-03

Applicant: BYD Company Limited

Inventor： CHEN, Guilan ,  WEN, Qiyong ,  CAI, Tiejun ,  HE, Bangjun ,  YANG, Yun

IPC: G06K9/00

CPC classification number: G06K9/00087 ,  A61B5/1172 ,  G06K9/0002 ,  G06K9/00026

Abstract: In the fingerprint identification system according to the present disclosure, the fingerprint sensor collects multiple frames of fingerprint images sliding-inputted by a user, the judging unit determines whether, among the multiple frames of fingerprint images, there is a first overlap region between a current frame of fingerprint images and a previous frame of fingerprint images; if yes, the judging unit removes the first overlap region from the current frame of fingerprint images and superposes the previous frame of fingerprint images with the current frame of fingerprint images to form a superposed fingerprint image; the judging unit completes judgment of all the multiple frames of fingerprint images to obtain a template fingerprint image; the processing unit saves characteristic points of the complete template fingerprint image. The fingerprint sensor collects a to-be-identified fingerprint image pressing-inputted by the user, and the processing unit determines whether the characteristic points of the to-be-identified fingerprint image match with the characteristic points of the template fingerprint image. When establishing template fingerprint database, the fingerprint identification system collects the fingerprint sliding-inputted by the user and the to-be-identified fingerprint pressing-inputted by the user in the subsequent matching process. Therefore, the input and identification efficiency is much higher than that of existing methods. The present disclosure also provides a fingerprint identification method and an electric equipment.

Abstract translation: 在本发明的指纹识别系统中，指纹传感器采集用户滑动输入的多帧指纹图像，判断单元判断多帧指纹图像中是否存在电流的第一重叠区域 指纹图像的帧和指纹图像的前一帧; 如果是，则判断单元从当前指纹图像帧中去除第一重叠区域，并将指纹图像的前一帧与当前指纹图像帧叠加以形成叠加指纹图像; 判断单元完成对所有多帧指纹图像的判断，得到模板指纹图像; 处理单元保存完整模板指纹图像的特征点。 指纹传感器采集用户按下输入的待识别指纹图像，处理单元判断待识别指纹图像的特征点是否与模板指纹图像的特征点相匹配。 指纹识别系统在建立模板指纹库时，采集用户滑动输入的指纹以及用户在后续匹配过程中按压输入的待识别指纹。 因此，输入和识别效率远高于现有方法。 本公开还提供了一种指纹识别方法和电子设备。

公开(公告)号：EP3087349A1

公开(公告)日：2016-11-02

申请号：EP14874728.0

申请日：2014-12-26

Applicant: BYD Company Limited

Inventor： ZHANG, Zibao ,  ZHANG, Jie ,  YANG, Yun

IPC: G01D5/24 ,  G06K9/00

CPC classification number: G06K9/0002 ,  G01R27/2605

Abstract: A capacitance detecting device for fingerprint identification comprises a conductive border (200), a detecting screen (100) and a detecting module (300). The detecting screen (100) comprises a plurality of detecting units (110). Each detecting unit (110) comprises a first conductive layer (111), a second conductive layer (112), a third conductive layer (113) and a fourth conductive layer (114). The detecting module (300) is configured to charge a sensing capacitance between the first conductive layer (111) and a finger (5) in contact with the detecting screen (100) and a feedback capacitance between the first conductive layer (111) and the second conductive layer (112) at a sampling stage, to control electric charges of the sensing capacitance and the feedback capacitance to transfer to an integrating capacitance between the third conductive layer (113) and the fourth conductive layer (114) at an integral stage, to measure a voltage variation of the integrating capacitance at the integral stage and to calculate the sensing capacitance according to the voltage variation. A fingerprint identification apparatus is also provided.

Abstract translation: 提供了一种用于指纹识别的电容检测装置和指纹识别装置。 该装置包括导电边界; 检测屏，包括：多个检测单元，其中每个检测单元包括：第一导电层，第二导电层，第三导电层和第四导电层; 检测模块，被配置为在所述第一导电层和与所述检测屏幕接触的手指之间对感测电容进行充电，以及在采样阶段对所述第一导电层和所述第二导电层之间的反馈电容进行充电，以控制所述感测的电荷 电容和反馈电容，以在积分级传递到第三导电层和第四导电层之间的积分电容，以测量积分级的积分电容的电压变化，并根据电压变化计算感测电容 。

公开(公告)号：EP4534339A1

公开(公告)日：2025-04-09

申请号：EP23814992.6

申请日：2023-05-19

Applicant: BYD Company Limited

Inventor： BAO, Wenjing ,  LI, Jie ,  LI, Qifeng ,  YANG, Yun

IPC: B60L58/12

Abstract: A vehicle (3000), having a battery system (2000), and the battery system (2000) having a battery cell management chip (10), wherein the chip (10) comprises a collection circuit (102), a power source (103), a processing circuit (101), and a dynamic protection circuit (106); the collection circuit (102) is used for collecting a parameter value of a working parameter of a single battery cell (2001) and transmitting the parameter value to the processing circuit (101); the power source (103) supplies power to the processing circuit (101); a storage circuit (105) is used for storing a dynamic protection threshold value for the working parameter; the processing circuit (101) is used for adjusting the working state of the single battery cell (2001) in the case of an anomaly; and the dynamic protection circuit (106) is used for adjusting the working state of the single battery cell (2001) according to the dynamic protection threshold value.

公开(公告)号：EP3308324A1

公开(公告)日：2018-04-18

申请号：EP16806838.5

申请日：2016-06-08

Applicant: BYD Company Limited

Inventor： LI, Zhengang ,  XU, Kunping ,  YANG, Yun

IPC: G06K9/00

CPC classification number: G01B7/28 ,  G06K9/0002

Abstract: The present disclosure provides a method and an apparatus for adjusting an excitation voltage of a fingerprint detection chip and a fingerprint detection chip. The method for adjusting an excitation voltage of a fingerprint detection chip includes: S1, transmitting an excitation signal to the metal ring by the signal transmitting unit, so as to detect a capacitance value of a coupling capacitance formed between the plurality of detection units in the second detection area and the metal ring; or enabling the metal ring grounded, and applying an excitation signal to the plurality of detection units in the second detection area by the signal transmitting unit, so as to detect a capacitance value of a coupling capacitance formed between the plurality of detection units in the second detection area and the metal ring; and S2, adjusting an excitation voltage of the first detection area according to the capacitance value of the coupling capacitance formed between the plurality of detection units in the second detection area and the metal ring.

公开(公告)号：EP3256988A1

公开(公告)日：2017-12-20

申请号：EP16748539.0

申请日：2016-01-05

Applicant: BYD Company Limited

Inventor： LI, Zhengang ,  XU, Kunping ,  YANG, Yun

IPC: G06K9/00

CPC classification number: G06K9/0002

Abstract: The present disclosure provides a fingerprint detection circuit and method. The circuit includes a fingerprint collecting module and a processing module. The fingerprint collecting module includes a plurality of collecting units, and each collecting unit has a regulation voltage and is configured to output a first voltage or a second voltage according to a capacitance value of one of ridge capacitors, a capacitance value of one of ridge capacitors and the regulation voltage. The processing module is configured to amplify the first and second voltages by a predetermined factor, to calculate a difference between the amplified first and second voltages, and to determine whether the difference is greater than or equal to the predetermined threshold. If no, the processing module adjusts at least one parameter, and configures the fingerprint detection circuit using at least one adjusted parameter.

公开(公告)号：EP2622441A1

公开(公告)日：2013-08-07

申请号：EP11827988.4

申请日：2011-06-28

Applicant: BYD Company Limited ,  Shenzhen BYD Auto R&D Company Limited

Inventor： YI, Lianfang ,  CAI, Tiejun ,  HE, Bangjun ,  YANG, Yun

IPC: G06F3/041

CPC classification number: G06F3/044 ,  G06F3/0416 ,  G06F3/043 ,  G06F2203/04104

Abstract: A method for detecting one or more objects is disclosed. In one embodiment, the method comprises the steps of: receiving one or more induction signals caused by at least one object along one or more directions; comparing each received induction signal with a reference to detect at least one upward trend and/or at least one downward trend in the induction signal; and determining the number of objects based on the number of upward trend and/or downward trend in each received induction signal. A device for detecting one or more objects on a touch device is also disclosed.

公开(公告)号：EP2460156A1

公开(公告)日：2012-06-06

申请号：EP10803887.8

申请日：2010-07-19

Applicant: BYD Company Limited

Inventor： LI, Hai ,  XU, Kunping ,  YANG, Yun ,  FENG, Wei

IPC: G10L21/02

CPC classification number: G10L21/0208

Abstract: A method for cancelling background noise of an audio device comprises determining characteristic values of an audio signal to construct a characteristic signal reflecting a change trend of the audio signal, multiplying the determined characteristic signal with the audio signal to construct a multiplication signal, and amplifying the multiplication signal.