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随着主流DC的分辨率突破千万像素大关,每张照片文件体积都超过5MB,即使再大的存储卡也难以满足长期外拍的需求了。这时,数码伴侣的必要性显得越发的突出。数码伴侣从本质上来说是一台具有独立供电能力和大容量存储空间,可以脱离电脑读取并存储各种规格的数码相机卡中照片文件的便携式移动存储设备。从这一点来看,它可以视作一个移动硬盘加多合一读卡器的复合体。当然,为了方便用户使用、保障照片数据的安全和满足随时随地存储照片的需要,数码伴侣还必须具备很多必要的特性。
As the resolution of the mainstream DC breaks through the megapixel mark, each photo file size is more than 5MB, even if the big memory card is also difficult to meet the needs of long-term outside shot. At this time, the need for digital companion is more and more prominent. The digital companion is essentially a portable mobile storage device with independent power supply and large storage capacity for reading and storing photo files from a variety of digital camera cards without the computer. From this point of view, it can be regarded as a mobile hard drive plus multi-card reader complex. Of course, in order to facilitate the use of users to protect the security of photo data and to meet the needs of anytime, anywhere storage photos, digital companion must also have many necessary features.