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    • 8. 发明授权
    • Digital camera with nonvolatile memory for storing image management data
    • 具有非易失性存储器的数码相机,用于存储图像管理数据
    • US06744465B1
    • 2004-06-01
    • US09533872
    • 2000-03-24
    • Masahiko Tomikawa
    • Masahiko Tomikawa
    • H04N576
    • H04N1/32112H04N1/2112H04N1/2158H04N1/32122H04N2101/00H04N2201/3226H04N2201/3254H04N2201/3277
    • The invention provides a digital camera comprising a disk drive device 1, control circuit 2, flash memory 7, flag processing circuit 8 and memory 9. Power can be supplied to the flag processing circuit 8 and the memory 9 at all times. The control circuit 2 reads image management data from a disk, writes the read data to the flash memory 7, and thereafter gives a flag rewrite command to the flag processing circuit 8. The circuit 8 changes a flag in the memory 9 to “1” in response to the command, and changes the flag to “0” when withdrawal of the disk from the drive device 1 is thereafter detected. The control circuit 2 reads and writes the image management data only when the power source of main body of the camera is turned on, with the flag set to “0”, whereby the power consumption of the camera can be reduced.
    • 本发明提供一种包括盘驱动装置1,控制电路2,闪速存储器7,标志处理电路8和存储器9的数字照相机。功率可以始终提供给标志处理电路8和存储器9。 控制电路2从盘读取图像管理数据,将读取的数据写入闪速存储器7,然后向标志处理电路8给出标志重写命令。电路8将存储器9中的标志改变为“1” 响应于该命令,并且当检测到从驱动装置1取出磁盘时,将标志改变为“0”。 控制电路2仅在照相机的主体的电源被接通的情况下读取并写入图像管理数据,标志被设置为“0”,从而能够降低照相机的功耗。