BIOMETRIC IMAGE READER IN DISPLAY AREA

• Main Authors: LEE, Jun Suk, KIM, Jong Uk, JEON, Ho Sik, SEO, Won Kuk, KIM, Jae Heung, LEE, Myung Hee
• Format: Patent
• Language: English; French; Korean
• Published: 09.05.2019
• Subjects: BASIC ELECTRONIC CIRCUITRY; CALCULATING; COMPUTING; COUNTING; ELECTRICITY; HANDLING RECORD CARRIERS; PHYSICS; PRESENTATION OF DATA; PULSE TECHNIQUE; RECOGNITION OF DATA; RECORD CARRIERS

An embodiment provides an image reader, which is an image reader comprising a plurality of pixels disposed in the form of a matrix including a plurality of rows and columns, comprising: a pixel signal processing circuit for outputting a first voltage value and a second voltage value by amplifying and converting a first output current which is outputted from a first pixel, and in which a signal associated with an object to be detected and a signal associated with a noise are combined, and a second output current outputted from a second pixel and including the signal associated with the noise; and an analog-digital conversion unit for digitalizing by way of the difference between the first voltage value and the second voltage value. Selon un mode de réalisation, l'invention concerne un lecteur d'image, qui est un lecteur d'image comportant une pluralité de pixels disposés sous la forme d'une matrice comprenant une pluralité de rangées et de colonnes, comportant: un circuit de traitement de signaux de pixels pour émettre en sortie une première valeur de tension et une seconde valeur de tension par amplification et conversion d'un premier courant de sortie qui est émis à partir d'un premier pixel, et dans lequel un signal associé à un objet à détecter et un signal associé à un bruit sont combinés, et un second courant de sortie émis à partir d'un second pixel et comprenant le signal associé au bruit; et une unité de conversion analogique-numérique pour une numérisation au moyen de la différence entre la première valeur de tension et la seconde valeur de tension. 일 실시예에 따르면, 복수개의 행과 열을 이루는 매트릭스 형태로 배치되는 복수개의 화소를 포함하는 이미지 판독 장치에 있어서, 제1 화소로부터 출력되며 검출 대상물에 따른 신호와 노이즈에 따른 신호가 합산된 제1 출력 전류 및 제2 화소로부터 출력되며 노이즈에 따른 신호가 포함된 제2 출력 전류를 각각 증폭 변환하여 제1 전압값 및 제2 전압값으로 출력하는 화소 신호 처리 회로; 및 상기 제1 전압값과 제2 전압값을 차분하여 디지털화시키는 아날로그 디지털 변환부를 포함하는, 이미지 판독 장치가 제공된다.