Information embedding apparatus and method, information processing apparatus and method, content processing apparatus and method, monitoring apparatus and method, and storage media
First Claim
1. An information embedding apparatus for embedding additional information into a content as a digital watermark, comprising:
- a generator operable to generate the digital watermark representing the additional information;
an embedding unit operable to embed the digital watermark into the content;
a first transmitter operable to transmit the content provided with the embedded digital watermark; and
a second transmitter operable to transmit the digital watermark or information for reconstructing the digital watermark.
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Accused Products
Abstract
A digital watermark is embedded into content for implementing copyright protection. The content is then distributed over a first transmission channel. A digital watermark signal to be superimposed on the content is transmitted over an encrypted second transmission channel. When the digital watermark is required, it is superimposed on the content and is then transmitted via, for example, an analog connection terminal. Alternatively, the digital watermark is decrypted and is obtained over the second transmission channel. The digital watermark obtained via the first transmission channel is then subtracted from the content, thereby removing the digital watermark. It is impossible for a third party to extract the digital watermark transmitted via the second transmission channel in meaningful form, thereby protecting the content from illegal use.
120 Citations
61 Claims
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1. An information embedding apparatus for embedding additional information into a content as a digital watermark, comprising:
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a generator operable to generate the digital watermark representing the additional information;
an embedding unit operable to embed the digital watermark into the content;
a first transmitter operable to transmit the content provided with the embedded digital watermark; and
a second transmitter operable to transmit the digital watermark or information for reconstructing the digital watermark. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An information embedding method for embedding additional information into a content as a digital watermark, comprising:
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generating the digital watermark representing the additional information;
embedding the digital watermark into the content;
a first transmitting step of transmitting the content provided with the embedded digital watermark; and
a second transmitting step of transmitting the digital watermark or information for reconstructing the digital watermark. - View Dependent Claims (8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 36, 37, 38, 39, 40)
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13. An information processing apparatus for processing a content in which additional information is embedded as a digital watermark, comprising:
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a first acquiring unit operable to acquire the content provided with the embedded digital watermark;
a second acquiring unit operable to acquire the digital watermark or information for reconstructing the digital watermark; and
a removing unit operable to remove the digital watermark from the content by using the acquired digital watermark or the information for reconstructing the digital watermark.
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24. An information processing method for processing a content in which additional information is embedded as a digital watermark, comprising:
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a first acquiring step of acquiring the content provided with the embedded digital watermark;
a second acquiring step of acquiring the digital watermark or information for reconstructing the digital watermark; and
removing the digital watermark from the content by using the acquired digital watermark or the acquired information for reconstructing the digital watermark.
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35. An information processing apparatus for managing digital watermark information to be embedded into a content, wherein at least part of the digital watermark information is managed in correspondence with the content into which the digital watermark information is to be embedded.
- 41. An information processing method for managing digital watermark information to be embedded into a content, wherein at least part of the digital watermark information is managed in correspondence with the content into which the digital watermark information is to be embedded.
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47. A content processing apparatus for performing processing concerning embedding of a digital watermark into a content, comprising:
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an embedding unit operable to embed the digital watermark into the content, said embedding unit comprising;
a generator operable to generate the digital watermark;
an embedding unit operable to embed the digital watermark into the content;
a first transmitter operable to transmit the content provided with the embedded digital watermark; and
a second transmitter operable to transmit the digital watermark or information for reconstructing the digital watermark; and
a removing unit operable to remove the digital watermark from the content, said removing unit comprising;
a first acquiring unit operable to acquire the content provided with the embedded digital watermark;
a second acquiring unit operable to acquire the digital watermark or the information for reconstructing the digital watermark; and
a removing device operable to remove the digital watermark from the content by using the acquired digital watermark or the acquired information for reconstructing the digital watermark.
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50. A content processing method for performing processing concerning embedding of a digital watermark into a content, comprising:
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embedding the digital watermark into the content, said embedding step comprising;
generating the digital watermark;
embedding the digital watermark into the content;
transmitting the content provided with the embedded digital watermark; and
transmitting the digital watermark or information for reconstructing the digital watermark; and
removing the digital watermark from the content, said removing step comprising;
acquiring the content provided with the embedded digital watermark;
acquiring the digital watermark or the information for reconstructing the digital watermark; and
removing the digital watermark from the content by using the acquired digital watermark or the acquired information for reconstructing the digital watermark. - View Dependent Claims (51, 52)
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53. A monitoring apparatus for managing additional information to be embedded into a content as a digital watermark, comprising:
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an issuing unit operable to issue and supply the additional information in response to a registration request of the content, and to manage the additional information in correspondence with the content; and
a supply unit operable to supply the corresponding additional information of the content in response to a rewriting request of the additional information. - View Dependent Claims (54)
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55. A monitoring method for managing additional information to be embedded into a content as a digital watermark, comprising:
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issuing and supplying the additional information in response to a registration request of the content;
managing the additional information in correspondence with the content; and
supplying the corresponding additional information of the content in response to a rewriting request of the additional information. - View Dependent Claims (56)
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57. A storage medium for physically storing a computer-readable software program which executes, on a computer system, processing for embedding additional information into a content as a digital watermark, said computer-readable software program comprising:
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generating the digital watermark representing the additional information;
embedding the digital watermark into the content;
transmitting the content provided with the embedded digital watermark; and
transmitting the digital watermark or information for reconstructing the digital watermark.
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58. A storage medium for physically storing a computer-readable software program which executes, on a computer system, processing on a content into which additional information is embedded as a digital watermark, said computer-readable software program comprising:
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acquiring the content provided with the embedded digital watermark;
acquiring the digital watermark or information for reconstructing the digital watermark; and
removing the digital watermark from the content by using the acquired digital watermark or the acquired information for reconstructing the digital watermark.
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59. A storage medium for physically storing a computer-readable software program which executes management of digital watermark information to be embedded into a content on a computer system, said computer-readable software program comprising managing at least part of the digital watermark information in correspondence with the content into which the digital watermark information is to be embedded.
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60. A storage medium for physically storing a computer-readable software program which executes processing concerning embedding of a digital watermark into a content on a computer system, said computer-readable software program comprising:
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embedding the digital watermark into the content, said embedding step comprising;
generating the digital watermark;
embedding the digital watermark into the content;
transmitting the content provided with the embedded digital watermark; and
transmitting the digital watermark or information for reconstructing the digital watermark; and
removing the digital watermark from the content, said removing step comprising;
acquiring the content provided with the embedded digital watermark;
acquiring the digital watermark or the information for reconstructing the digital watermark; and
removing the digital watermark from the content by using the acquired digital watermark or the acquired information for reconstructing the digital watermark.
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61. A storage medium for physically storing a computer-readable software program which executes monitoring processing for managing additional information to be embedded into a content as a digital watermark on a computer system, said computer-readable software program comprising:
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issuing and supplying the additional information in response to a registration request of the content;
managing the additional information in correspondence with the content; and
supplying the corresponding additional information of the content in response to a rewriting request of the additional information.
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Specification