Image data processing apparatus and method with display image control function

Claim 2

An image data processing apparatus comprising: first and second memory means (37, 39) for tempo­rarily storing the image data; and means (21) for displaying the image data stored in said first memory means (37); characterized by further comprising: means (12, 13) for applying a command to selec­tively change and display part of the image data dis­played on said display means (21); first control means (31) for reading out said part of image data to be selectively changed and displayed from said first memory means (37), according to said command; and second control means (31) for writing said part of image data read out by said first control means (31) into said second memory means (39).

Claim 3

The image data processing apparatus according to claim 1, characterized in that said first control means (31) includes means (32) for generating a read address corresponding to said part of image data to be selectively changed and displayed, and means (36) for reading out said part of image data from said first memory (37) means by the read address.

Claim 4

The image data processing apparatus according to claim 1, characterized in that said second control means includes means (33) for generating a predetermined write address, and means (36) for writing said part of image data into said second memory means (39) by the predetermined write address.

Claim 5

The image data processing apparatus according to claim 1, characterized in that said apparatus further comprises means for causing display of other image data by said displaying means in an area selected by said command.

Claim 6

An image data processing apparatus comprising: means for temporarily storing image data, said storing means including first memory area (37) and sec­ond memory area (39); and means (21) for displaying the image data stored in said first memory area (37); characterized by further comprising: means (13) for indicating a part of the image data displayed on said displaying means (21); first control means (31) for reading out the part of image data indicated by said indicating means (13) from said first memory area (37); second control means (31) for writing the part of image data read out by said first control means into said second memory area (39); third control means (11) for applying a command for displaying again on said displaying means (21) the part of image data stored in said second memory area (39); and fourth control means (31) for reading out the part of image data from said second memory area (37) accord­ing to said command, and for writing the part of image data read out from said second memory area (39) into said first memory area (37).

Claim 7

An image data processing apparatus comprising: means for temporarily storing image data, said storing means including first memory area (37) and sec­ond memory area (39); and means (21) for displaying the image data stored in said first memory area (37); characterized by further comprising: means (13) for indicating a part of the image data displayed on said displaying means (21); first control means (31) for reading out the part of image data indicated by said indicating means (13) from said first memory area (37); second control means (31) for writing the part of image data read out by said first control means into said second memory area (39); third control means (11) for applying a command for displaying again on said displaying means (21) the part of image data stored in said second memory area (39); and fourth control means (31) for reading out the part of image data from said second memory area (37) accord­ing to said command, and for writing the part of image data read out from said second memory area (39) into said first memory area (37).

Claim 8

The image data processing apparatus according to claim 5, characterized in that said first control means (31) includes means (32) for generating a read address corresponding to said part of image data to be selectively changed and displayed, and means (36) for reading out said part of image data from said first memory area (37) by the read address.

Claim 9

The image data processing apparatus according to claim 5, characterized in that said second control means (31) includes means (33) for generating a pre­determined write address, and means (36) for writing said part of image data into said second memory area (39) by the predetermined write address.

Claim 10

The image data processing apparatus according to claim 5, characterized in that said fourth control means (31) includes means (32) for generating a read address for reading out said image data that has been written into said second memory area (39); means (36) for reading out said part of image data from said second memory area (39) by the read address; means (33) for generating a write address corresponding to the reading out of said part of image address from said first memory area (37) by said first control means (31); and means (36) for writing said read-out part of image data into said first memory area (37) by the write address.

Claim 11

The image data processing apparatus according to claim 5, characterized in that said part of image data from said second memory area is written in the same address that of said read-out part of image data from said first memory area by said first control means.

Claim 12

The image data processing apparatus according to claim 5, characterized in that said apparatus further comprises fourth control means (31) for reading out said part of image data from said first memory area (39), and for displaying said read-out part of image data from said first memory area (37) on said display means (21).

Claim 13

The image data processing apparatus according to claim 5, characterized in that said apparatus further comprises means for causing display of other image data by said displaying means in an area selected by said command.

Claim 14

An image data processing method comprising the steps of: temporarily storing the image data in a first memory; and displaying the image data stored in said first memory on a display; characterized by first, applying a command to selectively change and display part of the image data displayed on said display; first, reading out said part of image data to be selectively changed and displayed from said first memory according to the command; first, writing said part of said image data read out from said first memory into a second memory; second, applying a recall command for displaying again on said display said part of image data which has been changed according to the command; second, reading out said part of image data from said second memory according to the recall command, and second, writing said read-out part of image data from said second memory into said first memory.

Claim 15

An image data processing method comprising the steps of: temporarily storing the image data in a first memory; and displaying the image data stored in said first memory on a display; characterized by first, applying a command to selectively change and display part of the image data displayed on said display; first, reading out said part of image data to be selectively changed and displayed from said first memory according to the command; first, writing said part of said image data read out from said first memory into a second memory; second, applying a recall command for displaying again on said display said part of image data which has been changed according to the command; second, reading out said part of image data from said second memory according to the recall command, and second, writing said read-out part of image data from said second memory into said first memory.