Kyocera Mita Corporation

Kyocera Technology Development, Inc.

John Flores Miguel

Paolo A Tamayo

Barry Sia

Yuichi Komori

Bonnie H Caballero

Yasuhide Sato

A method for interfacing single transfer and burst transfer components, comprising: processing transfer completion of a byte in burst transfer as an interrupt; maintaining the current state of signal lines to prevent occurrence of next interrupt; copying the transferred byte from buffer to memory; and allowing next interrupt; and enabling sending of next byte in burst transfer. This invention interfaces incompatible signaling of the components, and solves the handshake, communication and buffering problems involved. The methods also include polling simulating an interrupt, prevention of premature transfer and overwrite, interrupt on an edge of a busy signal, disabling and enabling clock to maintain current status, packet exchange protocol involving header, body and checksum, command and status packets, copying task waiting on a blocking semaphore which is signaled by interrupt handler task, and signals from a first component routed to a conversion component which generates new signals compatible with the second component.

Interfacing incompatible signaling using generic I/O and interrupt routines

A method for changing operation of a device, comprising: sending target device descriptors to the device's device emulator, which processes and stores the descriptors as the current descriptors in memory, and the device emulator responding to a query from a host simulating operation of the target device. Using the method, the host recognizes the device as a different, target device, such as printers, MFPs, peripherals, digital cameras, etc. Device emulation enables installation and other testing of a new and yet unavailable target device under development. The methods also include USB device enumeration, making a print job containing extended PJL commands and sending it using a generic device driver, emulator firmware analyzing and storing the descriptors in registers, sending a line reset command to simulate device detachment and reattachment, and meeting timing requirements of USB detached and attached states.

Method to change USB device descriptors from host to emulate a new device

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Pittsburg, CA, United States of America

John Flores Miguel