5041results about "Recording signal processing" patented technology

A watermark system includes an embedder, detector, and reader. The watermark embedder encodes a watermark signal in a host signal to create a combined signal. The detector looks for the watermark signal in a potentially corrupted version of the combined signal, and computes its orientation. Finally, a reader extracts a message in the watermark signal from the combined signal using the orientation to approximate the original state of the combined signal. While adapted for images, video and audio, the watermark system applies to other electronic and physical media. For example, it can be applied to mark graphical models, blank paper, film and other substrates, texturing objects for ID purposes, etc.

A printed object, such as an item of postal mail, a book, printed advertising, a business card, product packaging, etc., is steganographically encoded with plural-bit data. When such an object is presented to an optical sensor, the plural-bit data is decoded and used to establish a link to an internet address corresponding to that object.

Secure computation environments are protected from bogus or rogue load modules, executables and other data elements through use of digital signatures, seals and certificates issued by a verifying authority. A verifying authority-which may be a trusted independent third party-tests the load modules or other executables to verify that their corresponding specifications are accurate and complete, and then digitally signs the load module or other executable based on tamper resistance work factor classification. Secure computation environments with different tamper resistance work factors use different verification digital signature authentication techniques (e.g., different signature algorithms and/or signature verification keys)-allowing one tamper resistance work factor environment to protect itself against load modules from another, different tamper resistance work factor environment. Several dissimilar digital signature algorithms may be used to reduce vulnerability from algorithm compromise, and subsets of multiple digital signatures may be used to reduce the scope of any specific compromise.

The disclosure describes systems for creating and authenticating printed objects using authentication information. Techniques for incorporating authentication information into digital representations of objects and using the authentication information to authenticate the objects are also provided.

A digital watermark (DWM) content identifier is steganographically embedded in content. The DWM content identifier provides a link to a rights registry storing usage rights associated with the content. In some implementations the rights registry provides an association between the DWM content identifier and a digital rights management (DRM) content identifier. The DRM content identifier is used to find associated usage rights. The DWM content identifier can also be used to transfer content from a first DRM system to a second DRM system.

The present invention relates to linking on-line data to printed documents, such as business cards, envelopes, stickers, stationary, letterhead, résumés, etc. In one embodiment, a card-user registers with an on-line database and receives a gallery item including a steganographically-embedded unique identifier. The gallery item, such as a graphical background, text, shading, graphic, etc., is integrated and then printed with a document. The printed document can then be presented an optical-scanner, which outputs data. The output data is decoded to identify the unique identifier. The unique identifier is then used to index into the on-line database to retrieve information related to the proprietor of the document. In one embodiment, the on-line database includes features such as providing an immediate contact number, translation and/or pronunciation ability, and storage of audio/video files.

The memory device contains control structures that allow media content to be stored securely and distributed in a manner envisioned by the content owner, or service providers involved in the distribution. A wide variety of different avenues become available for distributing media content using such memory devices, such as where the devices contain one or more of the following: abridged preview media content, encrypted unabridged media content, prepaid content, rights and/or rules governing access to such content. The memory device has a type of control structures that enable a service provider (who can also be the content owner) to create a secure environment for media content distribution where end users and terminals register with the service provider, and gain access to the content in a manner controlled by the service provider. The various components to be loaded (e.g. abridged preview media content, encrypted unabridged media content, prepaid content, rights and/or rules governing access to such content) may be generated and loaded in a secure and efficient manner.

A user interface and associated computer readable medium for a user interface within a media management application. In one aspect, the user interface comprises a plurality of panes displaying a list of one or more media file sources, a list of user selectable media file identifiers, selected information associated with the listed media file identifiers, instructional information as to how a user can cause one of the panes to display selected information associated with the listed media file identifiers and a media player control interface. In one aspect, the user interface comprises panes displaying an instant messaging platform as a media file source and a list of indicia representing messaging users that a user communicates with. In another aspect, selecting the indicia representing a messaging user can cause a pane to display information associated with media files found in a media library of the selected messaging user.

A system and method of generating a playlist of affinity related media files using affinity relationship data. In one aspect the relationship affinity data is based upon a user rating score obtained from a population of user's ratings associated with media file attributes. In one aspect, a media file attribute which can include an artist, album, title, and genre information associated with a media file is received from a user, indicating the user's desire to create an affinity playlist of media files having an affinity relationship based upon the selected media file attribute.

A method at a clearing house to verify the geographic region of an end user device for receiving encrypted digital content. In one embodiment the geographic region is a country. The method comprising three sub-methods. In the first sub-method the address is verified by determining the credit card clearing address of the end user using an address verification system. In the second sub-method the address is verified by determining the IP address of the end user device requesting delivery of the encrypted digital content. And in the third sub-method the address is verified by checking that the IP address of the end user device requesting delivery of the encrypted digital content is the identical IP address of the end user device requesting a license to use the encrypted digital content. Depending on predetermined system settings, one or more of the above combination of the three sub-methods is then checked, before authorizing the decrypting of the encrypted digital content includes decrypting the encrypted digital content if the address verification system returns an address in a predetermined geographic region and the IP address of the end user device is in a predetermined geographic region.

A watermark system includes an embedder, detector, and reader. The watermark embedder encodes a watermark signal in a host signal to create a combined signal. The detector looks for the watermark signal in a potentially corrupted version of the combined signal, and computes its orientation. Finally, a reader extracts a message in the watermark signal from the combined signal using the orientation to approximate the original state of the combined signal. While adapted for images, video and audio, the watermark system applies to other electronic and physical media. For example, it can be applied to mark graphical models, blank paper, film and other substrates, texturing objects for ID purposes, etc.

Methods, systems and computer readable media for altering an audio output are provided. In some embodiments, the system may change the original frequency content of an audio data file to a second frequency content so that a recorded audio track will sound as if a different person had recorded it when it is played back. In other embodiments, the system may receive an audio data file and a voice signature, and it may apply the voice signature to the audio data file to alter the audio output of the audio data file. In that instance, the audio data file may be a textual representation of a recorded audio data file.

Some embodiments of the present invention provide a method of adjusting an output of a media player comprising capturing an ambient audio signal; processing the ambient audio signal to determine whether one or more characteristic forms are present within the ambient audio signal; and reducing an output of a media player from a first volume to a second volume if the one or more characteristic forms are present within the ambient audio signal. The characteristic forms may be, for example, a name or personal identifier of a user of the media player, the voice of a user of the media player, or an alarm or siren.

The present disclosure provides a method for making a playlist available to the public. In another embodiment, the present disclosure provides a method for creating a playlist comprising user-defined descriptor information. In another embodiment, the present disclosure provides a method for searching for such public playlists.

Systems and methods are provided for protecting and managing electronic data signals that are registered in accordance with a predefined encoding scheme, while allowing access to unregistered data signals. In one embodiment a relatively hard-to-remove, easy-to-detect, strong watermark is inserted in a data signal. The data signal is divided into a sequence of blocks, and a digital signature for each block is embedded in the signal via a watermark. The data signal is then stored and distributed on, e.g., a compact disc, a DVD, or the like. When a user attempts to access or use a portion of the data signal, the signal is checked for the presence of a watermark containing the digital signature for the desired portion of the signal. If the watermark is found, the digital signature is extracted and used to verify the authenticity of the desired portion of the signal. If the signature-containing watermark is not found, the signal is checked for the presence of the strong watermark. If the strong watermark is found, further use of the signal is inhibited, as the presence of the strong watermark, in combination with the absence or corruption of the signature-containing watermark, provides evidence that the signal has been improperly modified. If, on the other hand, the strong mark is not found, further use of the data signal can be allowed, as the absence of the strong mark indicates that the data signal was never registered with the signature-containing watermark.

A method on an end user system for creating additional copies onto at least one computer readable medium such as CDs, DVDs, ZipDisks™, tape, Flash memory, and RAM. The method comprising the steps of: receiving encrypted content with associated usage conditions and a first hash value; receiving a selection from an end user to create at least one copy of the-encrypted content onto at least one computer readable medium; sending a request to an online electronic store of the encrypted content selected to be copied; receiving from the electronic store a description of the content selected to be copied along with a second hash value; and determining if the first hash value received is identical to the second hash value and if the first hash and the second hash value is identical authorizing the creating additional copies onto at least one computer readable medium.

Methods are provided for embedding auxiliary information in a host content signal which reduce the memory, bandwidth and computational complexity of the embedding and transmission systems. In one embodiment, a first reduced-scale signal is produced which corresponds to the host content embedded with a first logical value and producing a second reduced-scale signal corresponding to the host content embedded with a second logical value. A first set of segments from the first reduced-scale signal may be combined with a second set of segments from the second reduced-scale signal in a pre-defined manner to produce a composite embedded host content. Thus the storage and transmission requirements of the watermarking system are reduced to having to deal with only the original content plus two reduced-scale signals.

Address information is steganographically encoded into audio or graphic data, and thereafter decoded to permit linking to the internet. The address information can be a literal URL, or may be an index to a database from which a corresponding URL can be obtained.

A video image information playback method and a video image information playback device with which user convenience can be obtained at the start of resume playback. The video image information playback method is a method of playback of a recording medium on which virtual-machine-based content has been recorded. During normal playback of the virtual-machine-based content, a program running on a virtual machine and a decryption program that decrypts encrypted virtual-machine-based content perform decryption processing for the virtual-machine-based content while exchanging data. After suspension of playback of the virtual-machine-based content, at the start of resume playback, which is executed following an instruction to resume playback, a proxy program is launched in place of the program that runs on the virtual machine. The proxy program and the decryption program perform playback of the video image of the virtual-machine-based content while exchanging data.