| 摘要 |
The first video server encodes the content played back from a VTR/DVD, thus generating encoded data. The encoded data is read from the first video server and copied in the second video server. The data thus copied is further copied in the third video server. Then, the encoded data is similarly copied in other video servers, the last one being the video server. Thus, the same content is stored in all video servers. The decoded content is output from the last video server and supplied to a video-audio monitor through a switcher. At the video-audio monitor, the content is previewed. Hence, whether the data items stored in all video servers contains errors can be determined by previewing them only once at the video-audio monitor. |
| 主权项 |
1. A content storage system comprising:
first to Nth storage apparatuses (N is 2 or a greater natural number), each of which is configured to store one or more encoded content items generated from encoding one or more original audio-video signals containing at least any one of a video signal and an audio signal; a data line which connects the first to Nth storage apparatuses in series; a monitor apparatus configured to preview the one or more original audio-video signals decoded from the one or more encoded content items stored in each of the first to Nth storage apparatuses; and a control apparatus which controls the first to Nth storage apparatuses and the monitor apparatus, wherein each of the first to Nth storage apparatuses comprises:
an encoding unit which receives and encodes the one or more original audio-video signals to generate the one or more encoded content items;a memory unit into which the one or more encoded content items encoded by the encoding unit are written;a decoding unit which decodes the one or more encoded content items, read from the memory unit, back to the one or more original audio-video signals; andan input-output unit which receives the one or more original audio-video signals from a source, writes the one or more encoded content items to the memory unit, reads the one or more encoded content items from the memory unit and outputs the one or more encoded content items to another storage apparatus for storage or outputs the decoded one or more original audio-video signals for preview, wherein the input-output units of the first to Nth storage apparatuses are connected in series by the data line, the control apparatus causes the first storage apparatus to receive a first one of the original audio-video signals and causes the memory unit of the first storage apparatus to store a first one of the encoded content items generated by the encoding unit of the first storage apparatus, the control apparatus causes the ith storage apparatus (i is any one of natural numbers 1 to N−1) to output the first encoded content item from the memory unit of the ith storage apparatus to the input-output unit thereof, the control apparatus causes the (i+1)th storage apparatus to receive the first encoded content item from the ith storage apparatus by the data line, and to write the first encoded content item to the memory unit of the (i+1)th storage apparatus, thereby copying and storing the first encoded content item, the control apparatus causes the Nth storage apparatus to read the first encoded content item from the memory unit of the Nth storage apparatus and causes the decoding unit of the Nth storage apparatus to decode the first encoded content item back to the first original audio-video signal, the control apparatus causes the Nth storage apparatus to output the decoded first original audio-video signal to the monitor apparatus, the control apparatus causes the monitor apparatus to preview the first original audio-video signal output from the Nth storage apparatus, the control apparatus detects an indication that the first original audio-video signal output from the Nth storage apparatus contains one or more errors, and the control apparatus commands the ith storage apparatus to decode and output the first encoded content item stored in the ith storage apparatus, and causes the monitor apparatus to preview the first original audio-video signal output from the ith storage apparatus.
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