公开(公告)号：US6008792A

公开(公告)日：1999-12-28

申请号：US772125

申请日：1996-12-20

申请人： Nak-ho Chung ,  Yong-Woo Park ,  Jung-Il Park

发明人： Nak-ho Chung ,  Yong-Woo Park ,  Jung-Il Park

IPC分类号： H04N5/93 ,  G06T5/20 ,  H04N1/405 ,  H04N1/409 ,  H04N5/76 ,  G09G5/00

CPC分类号： H04N1/405 ,  G06T5/20 ,  H04N1/4092

摘要： A window generating circuit of an image processing apparatus which processes an image is provided. The circuit includes a main controller, a memory device, first, second and third registers, and a window generator. The main controller inputs an original clock signal and generates first and second line memory read control signals, first and second line memory write control signals, a pixel clock, and address signals for first and second line memories based on the original clock signal. The memory device contains the first and second line memories. The first register stores current pixel data in accordance with the pixel clock, and the current pixel data relates to a current line of pixels of the image. The second register stores first line memory data output from the first line memory in accordance with the first line memory read control signal, and the first line memory data relates to a first line of pixels which precedes the current line of pixels. The third register stores second line memory data output from the second line memory in accordance with the second line memory read control signal, and the second line memory data relates to a second line of pixels which precedes the first line of pixels. The window generator inputs the current pixel data, the first line memory data, and the second line memory data from the first, second and third registers, respectively, and generates an n.times.n window of data based on such data. Also, a method performed by the circuit is also provided.

摘要翻译： 提供处理图像的图像处理装置的窗口生成电路。 电路包括主控制器，存储器件，第一，第二和第三寄存器以及窗口生成器。 主控制器输入原始时钟信号，并且基于原始时钟信号产生第一和第二行存储器读取控制信号，第一和第二行存储器写入控制信号，像素时钟和用于第一和第二行存储器的地址信号。 存储器件包含第一和第二行存储器。 第一寄存器根据像素时钟存储当前像素数据，并且当前像素数据与图像的当前像素行相关。 第二寄存器存储根据第一行存储器读取控制信号从第一行存储器输出的第一行存储器数据，并且第一行存储器数据涉及在当前行像素之前的第一行像素。 第三寄存器存储根据第二行存储器读取控制信号从第二行存储器输出的第二行存储器数据，并且第二行存储器数据涉及在第一行像素之前的第二行像素。 窗口生成器分别从第一，第二和第三寄存器输入当前像素数据，第一行存储器数据和第二行存储器数据，并且基于这样的数据生成n×n个数据窗口。 此外，还提供了由该电路执行的方法。