Method and apparatus for rotating dots data

Claim 1

An apparatus for rotating n×n dots of data m×90°, where m is an integer, said apparatus comprising: matrix memory means including n×n dot matrix memory cells for storing the n×n dots of data; clock signal means for applying a cyclic clock signal to said matrix memory means; select means for selecting a row or column of said n×n dot matrix memory cells of said matrix memory means; and changing means for changing n dots of data stored in said selected row or column of said matrix memory means by outputting said n dots of data from said selected row or column to a location which is external from said matrix memory means and by inputting another n dots of data into said selected row or column from a location which is external from said matrix memory means in the same cycle of said clock signal.

Claim 2

An apparatus for rotating n×n dots of data m×90°, where m is an integer, said apparatus comprising: matrix memory means including n×n dot matrix memory cells for storing the n×n dots of data; clock signal means for applying a cyclic clock signal to said matrix memory means; select means for selecting a row or column of said n×n dot matrix memory cells of said matrix memory means; and changing means for changing n dots of data stored in said selected row or column of said matrix memory means by outputting said n dots of data from said selected row or column to a location which is external from said matrix memory means and by inputting another n dots of data into said selected row or column from a location which is external from said matrix memory means in the same cycle of said clock signal.

Claim 6

An apparatus for rotating image data supplied from an external circuit m×90°, where m is an integer, said apparatus comprising: first image memory means for storing the image data supplied from the external circuit; data rotating means connected to said first image memory means for rotating the image data and a write clock for applying a cyclic clock signal to said data rotating means, said data rotating means including matrix memory means having n×n dot matrix memory cells for storing n×n dots of image data, and select means connected to said matrix memory means for selecting a row or column of said n×n dot matrix memory cells of said matrix memory means in response to an address signal; changing means for changing n dots image data stored in said selected row or column of said matrix memory means of said data rotating means by outputting said n dots of image data from said selected row or column to a location which is external from said matrix memory means and by inputting another n dots of image data into said selected row or column from a location which is external from said matrix memory means in the same cycle of said clock signal; second image memory means connected to said data rotating means for receiving said n dots of image data outputted from said selected row or column; address generating means for generating said address signal and memory address signals for said first image memory means and said second image memory means; and timing control means for generating control signals for said first image memory means, said second image memory means and said address generating means.

Claim 7

An apparatus for rotating image data supplied from an external circuit m×90°, where m is an integer, said apparatus comprising: first image memory means for storing the image data supplied from the external circuit; data rotating means connected to said first image memory means for rotating the image data and a write clock for applying a cyclic clock signal to said data rotating means, said data rotating means including matrix memory means having n×n dot matrix memory cells for storing n×n dots of image data, and select means connected to said matrix memory means for selecting a row or column of said n×n dot matrix memory cells of said matrix memory means in response to an address signal; changing means for changing n dots image data stored in said selected row or column of said matrix memory means of said data rotating means by outputting said n dots of image data from said selected row or column to a location which is external from said matrix memory means and by inputting another n dots of image data into said selected row or column from a location which is external from said matrix memory means in the same cycle of said clock signal; second image memory means connected to said data rotating means for receiving said n dots of image data outputted from said selected row or column; address generating means for generating said address signal and memory address signals for said first image memory means and said second image memory means; and timing control means for generating control signals for said first image memory means, said second image memory means and said address generating means.

Claim 12

A method for rotating image data by mx×90°, where m is an integer, the method comprising the steps of: applying a cyclic clock signal to n×n dot matrix memory means for storing image data; storing the image data in said n×n dot matrix memory means; selecting a row or column of said n×n matrix memory means in accordance with a rotating order; and changing n×n dots of image data stored in said matrix memory means by outputting image data from said selected row or column of said matrix memory means to a location which is external from said matrix memory means and inputting other image data into said selected row or column from a location which is external from said matrix memory means in each cycle of said clock signal in response to said rotating order.

Claim 13

A method for rotating image data by mx×90°, where m is an integer, the method comprising the steps of: applying a cyclic clock signal to n×n dot matrix memory means for storing image data; storing the image data in said n×n dot matrix memory means; selecting a row or column of said n×n matrix memory means in accordance with a rotating order; and changing n×n dots of image data stored in said matrix memory means by outputting image data from said selected row or column of said matrix memory means to a location which is external from said matrix memory means and inputting other image data into said selected row or column from a location which is external from said matrix memory means in each cycle of said clock signal in response to said rotating order.

Claim 14

An apparatus for rotating two-dimensional dot data m×90°, where m is an integer, said apparatus comprising: first data memory means for storing dot data supplied from an external circuit; data rotating means connected to said first data memory means for rotating dot data transferred from said first data memory means and clock signal means for applying a cyclic clock signal to said data rotating means, said data rotating means including matrix memory means having n×n dot matrix memory cells for storing n×n dot data transferred from said first data memory means, and select means connected to said matrix memory means for selecting a row or column of said n×n dot matrix memory cells in response to a select signal in order to output n dot data stored in said selected row or column to a location which is external from said matrix memory means and to write other n dot data inputted from said first data memory means into said selected row or column in the same cycle of said clock signal; second data memory means connected to said data rotating means for receiving said n dot data outputted from said selected row or column; address generating means for supplying memory address signals to said first data memory means and said second data memory means, and for supplying said select signal to said data rotating means; and timing control means for generating control signals for said first data memory means, said data rotating means, said second data memory means and said address generating means.

Claim 15

An apparatus for rotating two-dimensional dot data m×90°, where m is an integer, said apparatus comprising: first data memory means for storing dot data supplied from an external circuit; data rotating means connected to said first data memory means for rotating dot data transferred from said first data memory means and clock signal means for applying a cyclic clock signal to said data rotating means, said data rotating means including matrix memory means having n×n dot matrix memory cells for storing n×n dot data transferred from said first data memory means, and select means connected to said matrix memory means for selecting a row or column of said n×n dot matrix memory cells in response to a select signal in order to output n dot data stored in said selected row or column to a location which is external from said matrix memory means and to write other n dot data inputted from said first data memory means into said selected row or column in the same cycle of said clock signal; second data memory means connected to said data rotating means for receiving said n dot data outputted from said selected row or column; address generating means for supplying memory address signals to said first data memory means and said second data memory means, and for supplying said select signal to said data rotating means; and timing control means for generating control signals for said first data memory means, said data rotating means, said second data memory means and said address generating means.

Claim 18

A method for rotating two-dimensional data m×90°, where m is an integer, the method comprising the steps of: storing the two-dimensional data to be rotated in first data memory means for storing data; buffering n×n dot data read out from said first data memory means in n×n dot matrix memory cells; applying a cyclic signal to said n×n dot matrix memory cells; reading n dot parallel data from a sequentially selected row or column of said n×n dot matrix memory cells to a location which is external from the matrix memory cells in a first cycle of said cyclic signal; writing new n dot parallel data inputted from said first data memory means in said sequentially selected row or column of said n×n dot matrix memory cells in the first cycle of said cyclic signal; and sequentially storing said n dot parallel data read from said n×n dot matrix memory cells in second data memory means for storing data so as to produce rotated two-dimensional data.

Claim 19

A method for rotating two-dimensional data m×90°, where m is an integer, the method comprising the steps of: storing the two-dimensional data to be rotated in first data memory means for storing data; buffering n×n dot data read out from said first data memory means in n×n dot matrix memory cells; applying a cyclic signal to said n×n dot matrix memory cells; reading n dot parallel data from a sequentially selected row or column of said n×n dot matrix memory cells to a location which is external from the matrix memory cells in a first cycle of said cyclic signal; writing new n dot parallel data inputted from said first data memory means in said sequentially selected row or column of said n×n dot matrix memory cells in the first cycle of said cyclic signal; and sequentially storing said n dot parallel data read from said n×n dot matrix memory cells in second data memory means for storing data so as to produce rotated two-dimensional data.