| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 380054000 | BY MODIFYING OPTICAL IMAGE (E.G., TRANSMISSIVE OVERLAY) | 17 |
| 20080212772 | Image forming apparatus - An image forming apparatus includes a receiving unit for receiving data encrypted with a first encryption method and sent from a host device; a decryption unit for decrypting the data thus encrypted; an embedded data generation unit for re-editing the data thus decrypted to generate embedded information; an embedded information encryption unit for encrypting the embedded information with a second encryption method; and an image forming unit for forming the embedded information thus encrypted on a medium as a base emblem pattern. | 09-04-2008 |
| 20080232584 | HAND-HELD DECODER CARD HAVING A PARALLAX BARRIER PORTION AND A LIGHT FILTERING PORTION AND METHOD OF MAKING SAME - The present document describes a hand-held decoder card for revealing information hidden in a printed material and information hidden in a color image and method of making the same. The hand-held decoder card comprises: translucent material having a parallax barrier portion comprising parallel barrier lines for revealing the information hidden in the printed material; and the translucent material having a light filtering portion comprising a light filter for revealing the information hidden in the color image. According to various embodiments, the hand-held decoder card is in a transactional card format. The card may include only the parallax barrier portion or the light filtering portion. Also, the hand-held card may be a monocoque card or a laminated card. | 09-25-2008 |
| 20080279374 | Pixel-Based Method for Encryption and Decryption of Data - A method for encrypting and decrypting data prevents counterfeiting or forgery of various on-line or off-line prints. A graphical image or text to be encrypted is fragmented into minute pixels as basic units. In connection with a shadow, a color, and a size of the fragmented pixels, a pixel having a predetermined characteristic value is defined as a reference pixel, and then non-reference pixels having different characteristic values with respect to the reference pixel are defined. A predetermined data value is allotted to each of the non-reference pixels, and the fragmented reference pixels are one-to-one substituted by the non-reference pixels. Thereby, desired information data can be inserted without changing the state of an original file to be encrypted. | 11-13-2008 |
| 20090034723 | Image processor, image processing method, and computer program product - In an MFP, an image on an original is read and the image is stored as a document (input image) in an HDD. A marking-information generation module generates marking information (two-dimensional code information) expressing at least one of information relating to storage of the document and an output parameters of the document. A document-relevance-information management module relates the marking information to the stored image, and an encryption/decryption module encrypts the marking information. A marking generation module generates a marking image from the encrypted marking information, and the marking image is printed out. | 02-05-2009 |
| 20090052666 | VARIABLE DATA ENCRYPTION OF CHARACTERS PRINTED OR DISPLAYED ON SCREEN, WHICH MAY BE EMBEDDED IN PHOTOS, IMAGES, DRAWINGS, ILLUSTRATIONS, LOGOS OR FIGURES, FOR SECURITY PURPOSES - It is a source of security digital characters, incomprehensible to the naked eye, which can only be identified when the transparent substrate (acrylic, plastic or another material) is placed over the substrate on which they were printed (paper, PVC, polyester, film or others), or over the screen where they are displayed (CRT, LCD, plasma, acrylic or others), and the characters that are unreadable characters may be embedded or may be part of photos, images, drawings, illustrations, logos or figures, and the transparent base contains the remaining and complementary parts of the characters already printed or displayed on the screen, in a manner that their combination with the characters printed or displayed on the screen reveals them or make them comprehensible and identifiable, being that each substrate, described thus, may reveal or make comprehensible a series of documents containing these sources printed or displayed on the screen, or may even reveal and make the characters printed or displayed on the screen comprehensible from a single document containing these sources, in a manner that these characters make up a single-valued and reciprocal match with the transparent substrate, and in the latter case, both the printed characters or characters displayed on the screen, and the transparent substrate are created exclusively for one another. | 02-26-2009 |
| 20090129592 | METHOD OF FORMING A SECURITIZED IMAGE - There is disclosed a method of forming a securitized image comprising: obtaining a host image which is to be visible to an observer, obtaining a latent image to be concealed within the host image, adjusting the saturation of regions of at least one of the host image and the latent image such that when the latent image and the host image as adjusted are subsequently combined, the saturation of the combined regions will more closely approximate the saturation of corresponding regions of the original host image; and combining the latent image, and host image as adjusted to form a securitized image. | 05-21-2009 |
| 20090220076 | Image decrypting apparatus, image encrypting apparatus, and image decrypting method - When a decrypting apparatus receives an encrypted image, the apparatus detects the state of the encrypted image and determines whether the encrypted image is an image passed through only a digital medium or an analog medium, according to the state of the encrypted image. When the encrypted image is determined to be the image passed through only the digital medium, the decrypting apparatus switches to perform a digital decryption process and, when the encrypted image is determined to be the image passed through the analog medium, the decrypting apparatus switches to perform an analog decryption process. | 09-03-2009 |
| 20090245511 | IMAGE ENCRYPTION APPARATUS AND IMAGE DECRYPTION APPARATUS - In an image encryption apparatus, each of pixel-value inverse-converters applies pixel-value inverse-conversion on an input image in each of previously-encrypted areas. An image combiner superimposes images with inversely-converted pixels in the previously-encrypted areas to the input image to obtain a ready-to-encrypt image. An image encryptor scrambles blocks in the ready-to-encrypt image. A pixel-value converter applies pixel-value conversion on each of scrambled blocks to obtain a multiply-encrypted image. In an image decryption apparatus, a pixel-value inverse-converter applies pixel-value inverse-conversion on each scrambled block in the multiply-encrypted image to obtain a dot-erased image. An image decryptor inversely scrambles the scrambled blocks in the dot-erased image to obtain a decrypted image. Each of pixel-value converters applies pixel-value conversion on the decrypted image in each of previously-encrypted areas. An image combiner superimposes images with converted pixels in the previously-encrypted areas to the decrypted image to obtain a previously-encrypted image. | 10-01-2009 |
| 20090245512 | IMAGE DECRYPTION APPARATUS - A display processor displays on a display screen an encrypted image accepted by an image data acceptor. An encrypted region acquirer extracts encrypted regions contained on the encrypted image. A target region selector or an authorized target region selector selects decryption target regions from among encrypted regions contained in the encrypted image. A decryption order determiner determines a decryption order of the decryption target regions. The display processor displays on the display screen a prompt for inputting a decryption key (or a password) used for decryption of the encrypted image in each of the decryption target regions in accordance with the decryption order. A decryption key acceptor accepts the decryption key input by a decryption user. An image decryptor performs a decryption process on the encrypted image in the decryption target regions in accordance with the decryption order. A decrypted image of each decryption target region is output. | 10-01-2009 |
| 20090245513 | IMAGE ENCRYPTION APPARATUS AND IMAGE DECRYPTION APPARATUS - In an image encryption apparatus for visually encrypting an input image, an encryption area selector selects an encryption area within an input image including an area to be encrypted. An image converter divides the encryption area into a plurality of blocks. The image converter divides each block of the encryption area into a plurality of sub-blocks. An image converter performs an image conversion including rotation and mirror-reverse in accordance with an encryption key on the image in each sub-block. The image converter scrambles the image on a block-by-block basis in accordance with the encryption key. A pixel value converter converts a pixel value of a minimal area in a block so that a position of the block may be detected. | 10-01-2009 |
| 20090252323 | METHODS, TECHNIQUES AND SYSTEM FOR MAINTAINING SECURITY ON COMPUTER SYSTEMS - A hardware device that includes a first interface, a second interface, at least one memory unit, a data analyzer circuitry, and decryption circuitry. The first interface receives image information that is sent to a display. The data analyzer circuitry analyzes the image information to detect encrypted image information. The decryption circuitry decrypts the detected encrypted image information to provide the decrypted image information to replace the encrypted image information to provide modified image information. The second interface sends the modified image information to the display so that the display displays a modified image. The at least one memory unit stores at least a portion of at least one out of the image information, the modified image information and at least one decryption key. | 10-08-2009 |
| 20090262931 | DEVICE, METHOD, AND PROGRAM FOR IMAGE ENCRYPTION/DECRYPTION - In order to encrypt a part of an input image in such a manner that the encrypted part can be located for decryption, means for regularly converting pixel values in the area to be encrypted and generating a pattern unique to the pixel value conversion in order to encrypt the area to be encrypted; means for setting a specified positioning marker for locating an encryption position at two or more of the four corners of the area to be encrypted; and means for setting one or more checking marks for verifying appropriateness of a decrypted image in the encrypted area before the decryption are included. | 10-22-2009 |
| 20090268904 | DISPLAY DEVICE FOR VISUALLY RECONSTRUCTING AN IMAGE - The invention relates to a display device for visually reconstructing an image ( | 10-29-2009 |
| 20090274298 | METHOD FOR PRODUCING A SECURITY FEATURE ON A FLAT SUBSTRATE - A security feature is produced on a flat substrate, e.g. on paper or board. Particles—forming a cryptographic random pattern—are applied, preferably scattered on, to the substrate or incorporated into the substrate. Flexible pieces of wire or fiber, in particular thin pieces of copper wire, are applied to or incorporated into the substrate in a feature area corresponding to the security feature. The security feature can be provided with a protective layer, e.g. a laminate. A security feature produced in accordance with the invention can be detected simply and faultlessly and evaluated cryptographically. Furthermore, it cannot be imitated, or can be imitated only uneconomically, with known printing processes. | 11-05-2009 |
| 20100002878 | METHOD FOR INPUTTING PASSWORD IN MOBILE TERMINAL - A method for inputting a password in a mobile terminal includes displaying a keypad cryptograph taking a form of a keypad image, in which the symbols arrangement of the input keys in the keypad cryptograph is different from a symbols arrangement of the input keys of a physical keypad of the mobile terminal, and inputting the password through the input keys of the physical keypad being adopted to input symbols indicated by the keypad cryptograph. | 01-07-2010 |
| 20100046750 | CODING METHOD, DECODING METHOD, CODEC AND DATA STORAGE MEDIUM FOR HOLOGRAPHIC STORAGE - In a coding method for the encryption of information worth protecting on a holographic data storage medium, an item of information (I; I | 02-25-2010 |
| 20160078785 | Method for Hiding Messages and Revealing Said Messages Utilizing Phosphorescent Devices - An encryption method for an image, alphanumeric message, random pattern, or any other visual depiction is disclosed. Furthermore, a device for decoding the concealed message created in accordance with the aforementioned method is disclosed. The method and device rely on the limited range of light wavelengths which trigger phosphorescence in a given material. Those wavelengths can be combined with others to obscure the activating light pattern when viewed by the human eye. | 03-17-2016 |
