Image processing device, for use in scanner, printer, digital copying machine and display device

An image processing device comprising:

• non-volatile or secondary storage means for storing encoded data into which image data is encoded in a form of fixed length compression;
• a toggle buffer having first and second buffer means, for temporarily holding the encoded data and outputting the encoded data;
• and
• decoding means for decoding the encoded data outputted from the toggle buffer and outputting image data,
• wherein the second buffer means outputs the encoded data to the decoding means from the non-volatile or secondary storage means when the first buffer means of the toggle buffer receives the encoded data read out from the non-volatile secondary storage, and the first buffer means outputs the encoded data to the decoding means from the non-volatile secondary storage means when the second buffer means receives the encoded data read out from the non-volatile secondary storage means;
• and
• wherein the secondary storage means includes a plurality of zones, each zone having a rate for storing data different than rates for other zones, and wherein the secondary storage means further includes a means for storing encoded data on one of the zones at a storing speed such that a ratio of the storing speed to a speed of inputting the image data is greater than a ratio of a size of the encoded data to a size of the image data.

An image processing device comprising:

• an encoding means for encoding in a form of fixed length compression, image data inputted at a predetermined speed and outputting encoded data;
• an encoding memory capable of receiving, writing, storing, and outputting the encoded data representing the image data;
• non-volatile secondary storage means for writing and storing the encoded data outputted from the encoding memory,
• wherein writing of the encoded data outputted from the encoding means to the encoding memory and writing the encoded data output from the encoding memory to the non-volatile secondary storage means are performed exclusively;
• and
• wherein the secondary storage means includes a plurality of zones, each zone having a rate for storing data different than rates for other zones, and wherein the secondary storage means further includes a means for storing encoded data on one of the zones at a storing speed such that a ratio of the storing speed to a speed of inputting the image data is greater than a ratio of a size of the encoded data to a size of the image data.

An image processing device comprising:

• non-volatile secondary storage means for holding encoded data into which image data is encoded in a form of fixed length compression;
• wherein the secondary storage means includes a plurality of zones, each zone having a rate for storing data different than rates for other zones, and wherein the secondary storage means further includes a means for storing encoded data on one of the zones at a storing speed such that a ratio of the storing speed to a speed of inputting the image data is greater than a ratio of a size of the encoded data to a size of the image data;
• reading means for reading out the encoded data from the non-volatile secondary storage means;
• image editing means for image processing an image represented by the encoded data read out by the reading means and for outputting the encoded data after the image processing;
• and
• writing means for writing the encoded data after the image processing outputted from the image editing means, to the non-volatile secondary storage means.