IMAGE READING SYSTEM AND IMAGE READING DEVICE THEREIN

摘要

An image reading system comprises an image reading device and an image storage device. The image reading device comprises: a reading unit, a converting unit, a determining unit, a transmission unit. The image storage device comprises a storage unit, a receiving unit, an image processing unit. The determining unit is configured to determine whether the image data is color data, gray data, or binary data, and is configured to generate determination data indicating a result of the determination. When the determination data indicates that the image data is the color data, the image processing unit stores the transmission data. When the determination data indicates that the image data is the gray data, the image processing unit stores the luminance data without storing the color difference data. When the determination data indicates that the image data is the binary data, the image processing unit stores black-white image data.

主权项

1. An image reading system comprising an image reading device and an image storage device,
wherein the image reading device comprises:
a reading unit configured to read an original document on a pixel-to-pixel basis and generate image data including color difference data and luminance data;a converting unit configured to convert the image data to transmission data, the image data being compressed in converting to the transmission data;a determining unit configured to determine whether the image data is color data, gray data, or binary data, and configured to generate determination data indicating a result of the determination; anda transmission unit configured to transmit the transmission data and the determination data to the image storage device; and wherein the image storage device comprises:
a storage unit;a receiving unit configured to receive the transmission data and the determination data both transmitted by the transmission unit; andan image processing unit configured to perform:
when the determination data indicates that the image data is the color data, storing the transmission data in the storage unit;when the determination data indicates that the image data is the gray data, decompressing the transmission data to regenerate the image data, and storing the luminance data in the storage unit without storing the color difference data; andwhen the determination data indicates that the image data is the binary data, decompressing the transmission data to regenerate the image data, converting the luminance data of the regenerated image data to black-white image data, and storing the black-white image data in the storage unit.