EXTERNAL CHARACTER ACCESS SYSTEM

• Main Author: SUGANUMA YUKIO
• Format: Patent
• Language: English
• Published: 23.03.1985
• Subjects: ADVERTISING; ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICESUSING STATIC MEANS TO PRESENT VARIABLE INFORMATION; CALCULATING; COMPUTING; COUNTING; CRYPTOGRAPHY; DISPLAY; EDUCATION; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS; SEALS

PURPOSE:To shorten an external character registration and a read-out time by constituting a sytem so that a necessary data for the external character registration of one character is divided into an external character memory, external character memory selector and a table buffer, to store. CONSTITUTION:An external character area consists of an external character memory 1 having plural data areas which can read/write an image data of an external character for an external character access, an external character memory selector 2 for storing a flag showing a registration state of a handled external character code, to the external character memory and a pointer showing an address of the external character memory, a table buffer 3 for storing as one pair a section/point code and also a flag showing a free area of the external character memory at every order of an external character data registered in the external character memory, and a table pointer 4 showing an address point of the external character memory to be registered in the next time. The flag of the selector 2 to which a section/point image data is fed from the outside, the buffer 3 and the pointer 4 are retrieved, whether the free area exists or not is checked, and an access is executed to the memory 1.