Patent ID: 8599424

Claim:
A cartridge chip for use with an imaging cartridge installed in an imaging device, comprising: a memory element storing imaging cartridge data, wherein the memory element includes a separate read-only memory subunit and a separate writable memory subunit; wherein the imaging device is selectively operable to read the memory element of the cartridge chip and write to the memory element of the cartridge chip; wherein the cartridge chip is unable to determine the type of the imaging device; wherein the cartridge chip is selectively operable to function with a plurality of imaging devices; and a controller for controlling the operation of the cartridge chip; wherein the controller is selectively operable to transmit at least one data frame to the imaging device in order to acknowledge a reading of the memory element of the cartridge chip by the imaging device; wherein the imaging device is selectively operable to transmit at least one data frame to the controller in order to write to the memory element of the cartridge chip; wherein the controller is selectively operable to acknowledge the writing to the memory element of the cartridge chip by the imaging device; wherein the memory element of the cartridge chip can not transmit a correct data frame to another type of the imaging device.