Electronic equipment with residual battery quantity display function and method of displaying the residual battery quantity

摘要

Electronic equipment has the function of displaying the battery residual quantity for displaying the usable residual time of a battery pack (1) used as a power source of the electronic equipment. The equipment is designed to cope with different types, including future versions, of battery cell (20) . The residual usable time of the battery pack (1) can be known with improved display accuracy. The equipment may be a video camera (60) carrying the battery pack (1) which outputs information on the residual battery capacity, charging/discharging current detection information and the battery cell voltage detection information. The video camera (60) includes a micro-computer (63) having a communication circuit (65) for receiving the information from the battery pack (1), a calculation circuit (66) for calculating the current residual battery capacity based on the information from the battery pack (1) received by the communication circuit (65), and a display control circuit (67). A display device (64) is supplied with a display signal corresponding to the results of calculations by the calculation circuit (66) of the micro-computer (63) so as to display the residual battery capacity based on the display signal. <IMAGE>