Signal processing system, device and method

Abstract

A center (content supply center) (1865) for storing and managing contents, and user terminals (1861 to 1864) used by respective users are connected via networks (861 to 867). The center (1865) sends signals of contents for trial viewing / listening to the user terminals for free or at a low price. The user terminals (1861 to 1864) can receive the signals of the contents for trial viewing / listening and select and purchase only the content that the user likes from the received contents so as to reproduce the content with high quality. This enables trial viewing / listening. It is not necessary to download a large quantity of data with high quality from the content supply center or the like and there will be more opportunities of content purchase.

Description

technical field [0001] The present invention relates to a content providing system and information processing method for providing content such as an audio signal or an image signal, and particularly to a content providing system and information processing method in which the signal is encoded to enable preview / Audition, so when the previewer / auditor decides to purchase the signal, it can be reproduced and recorded in high quality by adding a small amount of data. Background technique [0002] A content (software) distribution method is known, such that a sound signal or the like is encoded and then broadcast or recorded in a recording medium so that only those who purchase a key for decryption can hear the signal. [0003] As an encryption method, for example, there is known a method in which an initial value of a random sequence is given as a key signal for a bit string of a PCM sound signal, and then by taking the generated 0 / 1 random sequence and a PCM bit string to ob...

AI Technical Summary

Problems solved by technology

[0022] However, this method has a problem in that the user must first decide to purchase a content, and then download a large amount of data with high quality from a content providing center or the like

[0023] Another problem is that the user needs to go into the content feed center etc. to perform the preview / audition, so there is less chance of preview / audition

[0024] In addition, in the case of music, etc., the user usually wishes to purchase a track from among the tracks that the user has heard by accident, but in the method of entering the center to select preview / trial listening, the user may not find the track selected for trial listening.

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