Digital imaging system for converting a film camera into a digital camera

A digital imaging system for converting a film camera into a digital camera, the

• digital imaging system comprising an image sensor module and a cartridge module, wherein the image sensor module and the cartridge module are detachable and connectable with each other by contact pins;
• the image sensor module comprising an image sensing array, a processing unit coupled to the image sensing array for read-out an image from the image sensing array, a first memory coupled to the processing unit for storing a digital picture derived from an image read-out from the image sensing array and processed by the processing unit, and a sensor for detecting a film advance crank lever movement;
• the cartridge module comprising a second memory coupled to the first memory via the contact pins for long time storing a digital picture derived from an image read-out from the image sensing array, an on/off switch being operable by a rewinding lever of a film camera, and a battery and an USB port for charging the battery;
• the digital imaging system comprising a sound output unit.