Image signal generating apparatus

An image signal generating apparatus for generating an image signal, comprising:

• (A) binary image date forming means for receiving an image signal, for binarizing the received image signal to form binary image data;
• (B) a plurality of binary image data memory means each of which can store the binary image data of one picture image;
• (C) binary image data writing/reading control means for sequentially distributing and writing the binary image data formed by the binary image data forming means into said plurality of binary image data memory means at different timings and selectively sequentially switching and reading out the binary image data written in said plurality of binary image data memory means, respectively;
• and
• (D) binary image signal forming means for forming a binary image signal on the basis of the binary image data which are read out of said plurality of binary image data memory means.

An image signal generating apparatus for generating an image signal, comprising:

• (A) quantized data forming means for receiving an image signal, for quantizing the input image signal, and for forming quantized data;
• (B) N (N is an integer of N.gtoreq.2) quantized data holding means each of which can hold the quantized data of one picture image;
• (C) quantized data input/output control means which has a first quantized data outputting mode for sequentially distributing and supplying the quantized data formed by the quantized data forming means into said N quantized data holding means and for selectively sequentially generating the quantized data held in the N quantized data holding means and a second quantized data outputting mode for selectively sequentially generating the quantized data held in the M (M is an integer of 1.ltoreq.M<N) quantized data holding means among the N quantized data holding means, respectively, and which allows the quantized data held in the N quantized data holding means to be generated in accordance with either one of the first and second quantized data outputting modes;
• and
• (D) quantized image signal forming means for forming a quantized image signal on the basis of the quantized data which are generated from the N quantized data holding means.

An image signal generating apparatus for generating an image signal, comprising:

• (A) binary image data forming means for receiving an image signal, for binarizing the input image singal, and for forming binary image data;
• (B) N (N is an integer of N.gtoreq.2) binary image data memory means each of which can store the binary image data of one picture image;
• (C) binary image data writing/reading control means which has a first binary image data reading mode for sequentially distributing and writing the binary image data formed by the binary image data forming means into the N binary image data memory means and for selectively sequentially reading out the binary image data written in the N binary image data memory means, respectively, and a second binary image data reading mode for selectively sequentially reading out the binary image data written in the M (M is an integer of 1.ltoreq.M<N) binary image data memory means among the N binary image data memory means, respectively, and which allows the binary image data respectively written in the N binary image data memory means to be read out in accordance with either one of the first and second binary image data reading modes;
• and
• (D) binary image signal forming means for forming a binary image signal on the basis of the binary image data which are read out of the N binary image data memory means.