摘要:
A system and method for verifying that a document is included in a document management system is disclosed. This system and method includes radio frequency scanning at least a portion of the document, generating document data dependently upon the radio frequency scanning, comparing the generated document data to stored document data, the stored document data generated dependently upon a prior radio frequency scanning of at least a portion of the document, and outputting an indication of the document being included in the document management system as determined by the comparing.
摘要:
The presently claimed invention relate generally to portable audio devices. One claim recites a method including: receiving audio content data through an interface of a portable personal digital device capable of playing audio; storing the received audio content data in electronic memory; audibly rendering said audio content data; utilizing an electronic processor, counting a number of plays of the received audio content data; and displaying the number of plays of the received audio content data to a user of the portable personal digital device. Of course additional claims and combination are provided as well.
摘要:
An image transfer system has an extracting section that extracts image areas from a document image read by a reading section. A digital signature providing section provides sender's digital signatures to the image areas according to degrees of secrecy. An image file creating section creates an image file including image areas with the sender's digital signatures provided by the digital signature providing section and a sending section sends the image file to a receiving section. A digital signature acquiring section acquires receiver's digital signatures for restricting image areas to be presented to a user. An image area selecting section selects image areas to be presented to the user in accordance with the sender's digital signatures in the image file received by the receiving section and the receiver's digital signatures acquired by the digital signature acquiring section. An output section outputs image areas selected by the image area selecting section.
摘要:
The present invention provides encryption techniques useful with digital watermarking payloads. One claim recites: a method to secure a first digital watermark payload and a second digital watermark payload through encryption of only one of the first digital watermark payload or the second digital watermark payload. The method includes: utilizing a multi-purpose computer processor configured to: provide information redundantly in the first digital watermark payload and the second digital watermark payload, yet the first digital watermark payload includes at least some information that is unique relative to at least the second digital watermark payload; encrypt the first digital watermark payload; embed a first digital watermark in media, the media representing audio, imagery or video, the first digital watermark comprising the encrypted first digital watermark payload; and embed a second digital watermark in the media, the second digital watermark comprising the second digital watermark payload. Of course, additional claims and combinations are provided.
摘要:
A media signal is analyzed for an expected error rate. Data is steganographically encoded in the media signal using an amount of error robustness coding that is determined based in part on the expected error rate. To decode the data from the media signal, the media signal is analyzed to determine an expected error rate. The steganographically encoded data is decoded using an amount of error robustness coding that is determined based in part of the expected error rate.
摘要:
A registering apparatus includes: a first image data acquiring unit that acquires first image data from a first region on a recording medium; a second image data acquiring unit that acquires second image data from a second region that includes the first region; a third image data acquiring unit that acquires third image data from a third region that does not include the first region and differs from the second region when a correlation value between the second image data and the first image data is equal to or greater than a predetermined first threshold value; and a registering unit that registers the first image data as registration data that are image data to be used in authentication of the recording medium when a correlation value between the third image data and the first image data is equal to or less than a second threshold value.
摘要:
An imaging apparatus includes an image data generating unit, a verification data generating unit, a first slot, a second slot, a first interface and a second interface. The image data generating unit generates image data. The verification data generating unit generates first verification data used to detect whether the image data is changed. A recording medium is inserted to the first slot.An image verification apparatus is inserted to the second slot. The first interface unit stores a first image file in the recording medium, the first image file including the image data and the first verification data. The second interface unit that transfers the first image file to the image verification apparatus. The image verification apparatus is capable of detecting, using the image data and the first verification data, whether the image data is changed.
摘要:
Stationery, or other printable media, is encoded with a digital watermark. The watermark is not conspicuous to a human observer of the media, yet conveys plural bits of auxiliary information when optically scanned and digitally processed. The watermark can be formed by ink-jet printing, or otherwise. The encoded information can be used for various purposes, including authenticating the document as an original, linking to associated on-line resources, and distinguishing seemingly-identical versions of the same document (document serialization).
摘要:
The present invention relates generally to systems for creating and authenticating printed objects using authentication information. One implementation recites: An apparatus for determining authenticity of a digital representation of an object. The digital representation includes embedded first authentication information. The apparatus includes: a storage system in which stored second authentication information is associated with stored reference codes; and a processor which receives the digital representation and a reference code associated therewith. The processor includes: an authentication information reader, and the processor: i) employs the reference code to retrieve the second authentication information associated therewith from the storage system, ii) employs the authentication information reader to recover the embedded first authentication information, and iii) employs recovered first authentication information and the second authentication information to determine authenticity of the digital representation. Other implementations are provided and claimed as well.
摘要:
A portable device uses a microphone to listen to ambient audio, derives data from captured audio signals, and uses the derived data to request delivery of the audio or related information to the user's home or other location. The device is desirably pocket-sized, or suitable for carrying on a key-ring. The device may also detect a watermark signal that is present in the user's environment (e.g., played through a public address speaker system) to aid the user in recalling the context from which the audio was requested.