Control system of buffer memory

Abstract

Abstract PURPOSE:To facilitate transfer and control of data by setting information denoting no-signal in segment memory in a storage part at every reading of signals in segment memory when signals in buffer memory are read out. CONSTITUTION:A reading part 2 of a transmitter 1 reads out an original 3, and read-out picture signals D are stored in a transmitting buffer 4. A memory 4 consists of memory parts M1-M4 segmented into four parts. A writing control part W divides a picture signal D into four parts, and stores the 1st picture signal d1 in the memory part M1. Simultaneously it issues a control signal C and sets ''Signal 1'' in the 1st flag column F1 of a flag table 12. In the same manner, whenever the picture signals d2-d4 are stored in the memory parts M2-M4, ''Signal 1'' is set in columns F2-F4 in correspondence to the next and subsequent memory parts (M2-M4) of the flag table 12. As soon as writing is completed, the writing control part W transmits a writing completion signal WE to a control part CONT.

Inventors

• 👤 Akio Matsui
• 👤 昭男 松井

Bibliographic Details