page printer control device

Abstract

Abstract PURPOSE:To provide a CPU with more time for development of image data during printing by providing the CPU which processes the data sent from a host computer and a control circuit which latches the data of a memory read by the CPU and transfers the data to another memory. CONSTITUTION:A CPU 1 outputs an address 2 of an image developing memory 5 to an address line. The address 2 is decoded by an address decoder 3, so that a selecting signal 4 of the image developing memory 5 is generated. A control circuit 7, when recognizing the selecting signal 4, generates a read control signal to the image developing memory 5. As the image developing memory 5 recognizes the control signal, it outputs a data 6 to a data line of the CPU 1. The control circuit 7 and CPU 1 latch the data 6 with the same timing. The latched data is written into an image signal feeding memory 9 by the control circuit 7. In this manner, since the data 6 of the image developing memory 5 is transferred to the image signal feeding memory 9 only by the read cycle of the CPU 1, the transfer can be done in half the time required by a conventional apparatus.

Inventors

• 👤 Hideaki Inukai
• 👤 秀明 犬飼

Bibliographic Details