DVRs can be divided into two major categories. One is a PC-based hard disk recorder based on a computer architecture (an industrial-control type hard disk recorder) and the other is an embedded hard disk recorder based on an embedded processor, which is based on current market applications. Both of them have their own merits. Early HDD recorders were based on computer-based PC hard disk recorders. Later, the market share of embedded HDD recorders gradually increased. At present, the share of the two in the market is basically the same.
The domestic hard disk recorder products are mainly domestically produced. The PC type hard disk recorder technology is mature, but there is no branded product. More users or engineering companies assemble themselves. The entry threshold for embedded hard disk recorders is relatively high. Brand-based. PC-type hard disk recorders can be further subdivided into two types based on the acquisition card (also known as soft pressure card) and based on the compression card (also known as hard pressure card). In view of technical factors, embedded DVRs are still mainly based on products with 16 channels of video input, and embedded products with more than 16 channels are still rare.
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