Title:
DIGITAL HALFTONE PRINTING METHOD AND SYSTEM THEREOF
Document Type and Number:
Japanese Patent JPH04296167
Kind Code:
A
Abstract:
PURPOSE: To decide which system does not use mathematical operation and to limit data quantity stored in a lookup table by transmitting a write spot address signal to a means for generating an address pointer signal uniquely connecting with a specific write spot address code. CONSTITUTION: A clock 70 is used to control gates 72 and 74, and a spot line entry register 78 is updated only at the end of count corresponding to fully horizontal scan. The present spot address of a register 76 is supplied to lookup tables 84 and 80 and used to obtain a 1st value and a connecting pointer. A selective write step transmits the write spot address signal to a pointer lookup table for generating the address pointer signal uniquely connecting with the specific write spot address code, and transmits the address pointer signal to a write spot address register in order to obtain the next write spot address signal.
Inventors:
RUISU ANSONII KAADEIRO
Application Number:
JP34691391A
Publication Date:
October 20, 1992
Filing Date:
December 27, 1991
Export Citation:
Assignee:
DU PONT
International Classes:
H04N1/405; H04N1/46; H04N1/23; H04N1/52; (IPC1-7): H04N1/23; H04N1/40
Domestic Patent References:
| JPS6411475A | 1989-01-17 |
Attorney, Agent or Firm:
Yoshikazu Tani (1 person outside)