Information processing device in an electronic apparatus utilizing an accessory control device and methods of application

摘要

An accessory control device for use in conjunction with electronic apparatus, such as, a laser printer and the information processing device and information processing methods for use of the accessory control device. The accessory control device may comprise a cartridge installed in the laser printer and include a RISC-type processor and a data transfer controller. The cartridge microprocessor receives print data via a read control circuit disposed within a data transfer controller or a FIFO control circuit and develops the print data into image data after which the image data is stored in a cartridge memory. The image data is then transferred to the electronic control device of the laser printer via a double-bank control circuit. The read control circuit and double-bank control circuit transfer print data to the printer microprocessor via a data bus, which has a read only capability as viewed from the electronic control device. This image data is then printed by a laser print engine of the printer under the control of the printer processor.