Memory access control device, method and recording medium for simultaneously accessing horizontally or vertically consecutive unit data or unit data on vertically alternate lines in different modes

A memory access control method of controlling access to a memory that stores data, comprising:

• a storage procedure of dividing and storing said data in different memory areas distinguished based on one or more predetermined bits of an access address to a plurality of groups of said memory;
• and
• an access procedure of accessing said data stored in different memory areas of said plurality groups of the memory simultaneously in the same clock cycle of access to said memory;
• wherein said memory is formed with two groups, a first group and a second group, and said data stored in said different memory areas of said two groups of the memory are accessed simultaneously in the same clock cycle of access to said memory, and
• wherein the dividing and storing of said data in different memory areas comprises:
• forming a plurality of blocks which form said data, each block comprising a plurality of unit data, said plurality of blocks formed in at least two arrangements among:
• an arrangement with two horizontally consecutive unit data, an arrangement with two vertically consecutive unit data, and an arrangement with two unit data on vertically alternate lines, and
• individually storing two unit data in said different memory areas of said two groups of the memory,
• wherein said data comprises two-dimensional unit data, and
• said method further comprising selecting at least two modes for accessing the two-dimensional unit data from:
• a mode to access two horizontally consecutive unit data at a time a mode to access two vertically consecutive unit data at a time, and a mode to access two unit data on vertically alternate lines at a time.

A data storage method in a memory access control device which controls access to a memory that stores data, comprising:

• a storage procedure of dividing and storing said data in different memory areas distinguished based on one or more predetermined bits of an access address to a plurality Of groups of said memory,
• wherein said memory is formed with two groups, a first group and a second group, and said data comprises two-dimensional unit data,
• said storage procedure further comprises:
• forming a plurality of blocks which form said data, each block comprising a plurality of unit data, said plurality of blocks formed in at least two arrangements among:
• an arrangement with two horizontally consecutive unit data, an arrangement with two vertically consecutive unit data, and an arrangement with two of the unit data on vertically alternate lines,
• selecting, wherein said data comprises two-dimensional unit data, at least two modes for accessing the two dimensional unit data from:
• a mode to access two horizontally consecutive unit data at a time, a mode to access two vertically consecutive unit data at a time, and a mode to access two unit data on vertically alternate lines at a time,
• storing two of the unit data individually in said different memory areas of said two groups of the memory,
• wherein said forming said plurality of blocks comprises forming said plurality of blocks within the range of 0≦x≦1 or 0≦y≦1, where “x” and “y” are, within said access address to each of the unit data that forms said plurality of blocks which form said data, the values which correspond to x- and y-coordinates of each unit data within said one or more plurality of blocks, respectively,
• wherein said storage procedure further comprises:
• storing the unit data at a coordinate (0, 0) and the unit data at a coordinate (1, 1) in said first group, and
• storing the unit data at a coordinate (l, 0) and the unit data at a coordinate (0, 1) in said second group.

A data storage method in a memory access control device which controls access to a memory that stores data, comprising:

• a storage procedure of dividing and storing said data in different memory areas distinguished based on one or more predetermined bits of an access address to a plurality of groups of said memory,
• wherein said memory is formed with two groups, a first group and a second group, and said data comprises two-dimensional unit data,
• said storage procedure further comprises:
• forming a plurality of blocks which form said data and each of which comprises a plurality of unit data, said plurality of blocks formed in at least two arrangements among:
• an arrangement with two of horizontally consecutive unit data, an arrangement with two of vertically consecutive unit data, and an arrangement with two unit data on vertically alternate lines,
• selecting, wherein said data comprises two-dimensional unit data at least two modes for accessing the two-dimensional unit data from:
• a mode to access two horizontally consecutive unit data at a time, a mode to access two vertically consecutive unit data at a time, and a mode to access two unit data on vertically alternate lines at a time,
• storing two unit data individually in said different memory areas of said two groups of the memory,
• wherein said forming said plurality of blocks comprises forming said plurality of blocks within the ranges of 0≦x≦3 and 0≦y≦3, where “x” and “y” are, within said access address to each unit data which forms said plurality of blocks, the values which correspond to x- and the y-coordinates of each unit data within said plurality of blocks, respectively,
• wherein said storage procedure further comprises:
• storing the unit data at the coordinate (0, 0), the unit data at the coordinate (1, 1), the unit data at the coordinate (1, 2) and the unit data at the coordinate (0, 3) in said first group, and
• storing the unit data at a coordinate (1, 0), the unit data at a coordinate (0, 1), the unit data at a coordinate (0, 2) and the unit data at a coordinate (1, 3) in said second group.

A non-transitory computer-readable recording medium for storing a memory access control program to be executed on a computer device to control access to a memory that stores data, said memory access control program causing said computer device to execute:

• a storage function which divides and stores said data in said different memory areas distinguished by one or more predetermined bits of an access address to a plurality of groups of said memory, and
• an access function which accesses said data stored in different memory areas of said plurality groups of the memory simultaneously in the same clock cycle of access to said memory,
• wherein said memory is formed with two groups, a first group and a second group,
• wherein the accessing of said data stored in said different memory areas comprises accessing said data stored in said different memory areas of said two groups of the memory simultaneously in the same clock cycle of access to said memory,
• wherein the dividing and storing of said data in different memory areas comprises:
• forming a plurality of blocks which form said data, each block comprising a plurality of unit data, said plurality of blocks formed in at least two arrangements among:
• an arrangement with two horizontally consecutive unit data, an arrangement with two vertically consecutive unit data, and an arrangement with two unit data on vertically alternate lines, and
• storing two of the unit data individually in said different memory areas of said two groups of the memory,
• wherein said data comprises two-dimensional unit data;
• and
• said memory access control program causes said computer device to further execute:
• selecting at least two odes from:
• a mode to access two horizontally consecutive unit data at a time, a mode to access two vertically consecutive unit data at a time, and a mode to access two unit data on vertically alternate lines at a time.