Abstract:
An image data encoding system is disclosed, that comprises a discrete cosine transforming means (101) for discrete-cosine transforming the original image, an electronic watermark data embedding means (102) for embedding the electronic watermark data (103) in the data that has been transformed by the discrete cosine transforming means (101), and a data selecting means (106; 110) for selecting the output signal (107) of the discrete cosine transforming means (101) or the output signal (108) of the electronic watermark data embedding means (102). Another image data encoding system is also disclosed, that comprises an electronic watermark embedding means (404) for embedding electronic watermark data selected from a plurality of types (408(0),...,408(n)) of electronic watermark data to the digital image data (401), wherein at least one of the plurality of types (408(0),...,408(n)) of electronic watermark data is predetermined electronic watermark data that does not affect the digital image data (401) even if the electronic watermark data is embedded in the digital image data (401).
Abstract:
The present invention is directed to a method of deterring the illicit copying of electronically published documents. It includes utilizing a computer system to electronically publish a plurality of copies of a document having electronically created material thereon for distribution to a plurality of subscribers and operating programming within the computer system so as to perform the identification code functions. The steps are to encode the plurality of copies each with a separate, unique identification code, the identification code being based on a unique arrangement of the electronically created material on each such copy; and, creating a codebook to correlate each such identification code to a particular subscriber. In some embodiments, decoding methods are included with the encoding capabilities. The unique arrangement of the electronically created material may be based on line-shift coding, word-shift coding, or feature enhancement coding (or combinations of these) and may be effected through bitmap alteration of document format file alteration.
Abstract:
Multiple transform utilization and applications for secure digital watermarking. In one embodiment of the present invention, digital blocks in digital information to be protected are transformed into the frequency domain using a fast Fourier transform. A plurality of frequencies and associated amplitudes are identified for each of the transformed digital blocks and a subset of the identified amplitudes is selected for each of the digital blocks using a primary mask from a key. Message information is selected from a message using a transformation table generated with a convolution mask. The chosen message information is encoded into each of the transformed digital blocks by altering the selected amplitudes based on the selected message information.
Abstract:
An digital watermark embedding device including an interface unit configured to acquire content in a digital form and digital watermark information, the device includes, a codeword generating unit configured to generate a base codeword including a bit sequence including the digital watermark information; a shifting unit configured to generate a plurality of correcting codewords differing from one another by permutating an arrangement in the bit sequence included in the base codeword depending on a plurality of shift amounts, the plurality of shift amounts differing from one digital watermark information to another, under a predetermined permutation rule; and a watermark superimposing unit configured to embed the plurality of correcting codewords in the content.
Abstract:
The present invention relates to a method for certifying and subsequently authenticating original physical or digital documents. The concept of the evidence lies in the dual nature of a physical information item and a digital information item, one being the reference for the other that cannot lie amended at the risk of the evidence being lost. For a physical original document associated with a bubble seal there is a corresponding time-and-date-stamped, proprietary paperless reference counterpart. For a time-and-date-stamped, proprietary digital original document there is a corresponding reference counterpart in the form of a bubble seal.
Abstract:
A computer is provided with an application and a printer driver. A user of the computer generates image data using the application. When the image data is for a plurality of pages, the user selects a desired watermark for each of the plurality of pages. The printer driver converts the image data into print data, and combines selected watermarks with the print data for corresponding pages, thereby generating updated print data. The updated print data is output as a single print job to the printer. The printer executes printing operations based on the print job so as to print an image on a plurality of pages, each formed with a corresponding watermark.
Abstract:
A system for loading digital watermarks automatically includes an application server (4). The application server includes a main controller. The main controller includes: a document fetching module (401) configured for fetching a document to be printed, and for accessing a document DRM header of the document fetched; a watermark downloading module (402) configured for downloading a digital watermark corresponding to the document; and an integrating module (403) configured for transforming the document into a graphical file and integrating the graphical file with the downloaded digital watermark. A related method is also disclosed.
Abstract:
In a data transmission apparatus and method of the present invention, a specific operator ID for an operator who uses a data processing device to process image data to be copied or transmitted, is selected. Specific owner IDs for owners who are authorized to access the image data, are selected. User identification data, inclusive of all operator IDs and owner IDs correlated to the data processing device, are stored in a storage device each time image data is captured by the data processing device. Allocation of the stored user identification data to each of the image data is managed by reading items of the user identification data from the storage device in response to the selections of the specific operator ID and the specific owner IDs and displaying the user identification data items.
Abstract:
The present invention relates to a method for certifying and subsequently authenticating original physical or digital documents. The concept of the evidence lies in the dual nature of a physical information item and a digital information item, one being the reference for the other that cannot lie amended at the risk of the evidence being lost. For a physical original document (8) associated with a bubble seal (7) there is a corresponding time-and-date-stamped, proprietary paperless reference counterpart. For a time-and-date-stamped, proprietary digital original document (15) there is a corresponding reference counterpart in the form of a bubble seal (7).
Abstract:
An image processing device of the present invention includes a management section for storing an authentication level set in accordance with the volume of image processing which is predicted in accordance with at least one of day and time. When a request for image processing to image data is made, an authentication section changes the authentication level for user authentication in accordance with at least one of day and time. Then, in accordance with this authentication result, requested image processing is performed.