Title:
MEMORY CONTROL CIRCUIT
Document Type and Number:
Japanese Patent JPS62217775
Kind Code:
A
Abstract:
PURPOSE:To make retransfer of data length unnecessary if accesses in areas with the same data length continue by taking data length, which is stored in a memory means when an access to a next memory starts, for an initial data length. CONSTITUTION:Since a length counter 412 handless data Y, M and C with the same data length, and the contents of an address counter 415 have to be stored at the same address in terms of converting colors, the same data has to be set. Accordingly the data input part of the address counter 415 and the length counter 412 are provided with latches, whereby only one setting of the counters 415 and 412 surfices to simplify processing at the side of a master MPU. For setting data to the counter 412 the master MPU writes data at an address xxxx2 to store in the counter 412.
Inventors:
SAKAGAMI WATARU
Application Number:
JP5931286A
Publication Date:
September 25, 1987
Filing Date:
March 19, 1986
Export Citation:
Assignee:
CANON KK
International Classes:
H04N1/21; B41J2/485; B41J2/525; B41J3/00; G06F12/00; G06F12/02; G06F13/16; G06F13/28; (IPC1-7): B41J3/00; B41J3/10; G06F12/00; G06F13/28; H04N1/21
Attorney, Agent or Firm:
Yasunori Otsuka