公开(公告)号：US20180343389A1

公开(公告)日：2018-11-29

申请号：US15987494

申请日：2018-05-23

Applicant: SEIKO EPSON CORPORATION

Inventor： Katsuya OTA

IPC: H04N5/232 ,  H04N5/225 ,  H04N5/235 ,  H04L12/40

CPC classification number: H04N5/23241 ,  H04L12/40045 ,  H04N1/00267 ,  H04N1/00904 ,  H04N1/02409 ,  H04N1/0282 ,  H04N5/2253 ,  H04N5/2254 ,  H04N5/2256 ,  H04N5/2354 ,  H04N2201/0041 ,  H04N2201/0049 ,  H04N2201/0081 ,  H04N2201/0436

Abstract: A document camera which operates with electric power supplied via a USB cable includes: an image pickup unit which picks up an image of a subject via a lens; a light source unit which emits light toward the subject; a drive unit which drives the lens; a detection unit which detects an amount of current supplied via the USB cable; and a control unit which controls an operation of the light source unit and the drive unit according to the amount of current detected by the detection unit.

公开(公告)号：US20150213575A1

公开(公告)日：2015-07-30

申请号：US14602744

申请日：2015-01-22

Applicant: SEIKO EPSON CORPORATION

Inventor： Katsuya OTA

IPC: G06T1/60 ,  G09G3/20

CPC classification number: G09G3/2003 ,  G09G3/36 ,  G09G2330/06

Abstract: In an image display apparatus, a processor loads background image data into a frame memory via a data bus in a unit of a predetermined number of bits. When the color information for each pixel is divided into n parts to form divided data in a unit of the predetermined number of bits, the number of standing bits is calculated for each of the parts of the divided data, differences in the number of standing bits between the n parts of the divided data are calculated, and the sum of the differences in the number of standing bits is calculated as a difference sum, the background image data has a difference sum that falls within a lower 50% of the difference sums arranged in descending order for the color information that satisfies a condition that a brightness grayscale level is 90% or greater.

Abstract translation: 在图像显示装置中，处理器以预定位数的单位经由数据总线将背景图像数据加载到帧存储器中。 当每个像素的颜色信息被划分为n个部分以按预定位数的单位形成分割数据时，针对分割数据的每个部分计算驻留比特数，站立位数的差异 计算分割数据的n个部分之间的差分和驻波比数之差的和被计算为差值和，背景图像数据具有落在排列的差分和的50％以内的差值和 以满足亮度灰度等级为90％以上的条件的颜色信息的降序。