JP2503812B

PURPOSE:To accurately and quickly retrieve unrecorded picture recording area by providing an automatic retrieval means for retrieving the unrecorded picture recording area. CONSTITUTION:Since normally all memory cells are unused most of times for a newly mounted storage part, signals phi113 make access to a first memory cell and immediately become an H level. Thus, the first memory cell is accessed for photographing and the address of the first memory cell, that is '1,' appears at a display device. However, when some memory cells, for instance first to third memory cells, are used, a circuit 101 keeps sending pulses phiA to a counter 114 while the output phi113 of a detection circuit 113 is an L level. The addresses are advanced one by one in such a manner and when the unused memory cell, a forth memory cell in this case, is reached, the output phi113 becomes the H level, the pulses phiA are stopped and the address of the memory cell at the time is displayed at the display device 18.