Digital camera having separable user module

A digital camera system comprising:

• a main body that comprises an optical system including a plurality of lenses to optically process light from a subject, an optoelectric converter converting the light from the optical system into an electrical analog image signal, an analog-to-digital converter converting the analog image signal of the optoelectric converter into a digital image signal, a digital signal processor processing the digital image signal from the analog-to-digital converter, and a wireless communication interface;
• and
• a user module that comprises a wireless communication interface, which corresponds to the wireless communication interface of the main body, a user input unit, a display device, a controller, a microphone, an analog-to-digital converter, a digital-to-analog converter, and a speaker,
• wherein a digital image signal of the digital signal processor may be transmitted to the user module through the wireless communication interface and displayed on the display device of the user module, and
• a user input signal input through the user input unit of the user module may be transmitted to the digital signal processor through the wireless communication interface and processed by the digital signal processor,
• wherein the user module is connectable to and separable from the main body, the main body further comprises a wired communication interface, and the user module further comprises a wired communication interface that corresponds to the wired communication interface of the main body,
• wherein the digital image signal of the digital signal processor may be transmitted to the user module through the wired communication interface, and
• wherein the user input signal input through the user input unit of the user module may be transmitted to the digital signal processor through the wired communication interface.