Abstract: Method, system and computer program product for replacing a portion of a digital signal by applying a first difference correction that, after range limiting, converts the samples in the replacement portion to extremum values; then applying a second difference correction based on the difference between the extremum values and the desired replacement values. The first and second sets of correction values are thus independent of the original values in the first digital signal.

Abstract: Methods and systems of using a single MPEG frame to produce a fade effect that extends over more than one frame period. An example system includes a computer-based device that includes a receiver that receives an MPEG formatted image from a source system over a network, a component that modifies a sequence header of the received MPEG formatted image based on a predetermined fade event, and a decoder that decodes the MPEG formatted image with the modified sequence header. Also, the system includes a display device that displays the decoded image.

Abstract: Methods, systems and computer-program products for encoding an image so that a portion of the image can be extracted without requiring modification of any of the encoded data. A valid MPEG I-frame sequence is generated from the portion of the image, then fed directly to an MPEG decoder for decompression and display.

Abstract: Systems and methods for encoding a sub-image, using conventional MPEG encoding technique, to generate a special image file that is smaller than the equivalent full-frame image file. This special image file can be used to regenerate any of a multiplicity of full-sized encoded image files, each of which results in the display of the sub-frame image at one of a multiplicity of positions within the full-sized image frame.

Abstract: Methods and systems for providing synopsis information to a program recipient for a program currently being presented. Synopsis information is provided for a program currently being presented from a starting point of the program to at least a point of the program currently being presented. The synopsis information is received and decoded so that the synopsis information is provideable to the program recipient. The synopsis information is provided to the program recipient when the program recipient indicates the program recipient wishes to have the synopsis information provided.

Abstract: The current invention describes a software methodology for simulating a virtual machine based upon a platform configuration which specifies in detail the capability of the qualitatively and quantitatively variable features of the hardware and software platforms being simulated. The configuration is used during the execution of the simulator to control the simulation process to faithfully mimic the behavior of a variety of platforms.

Abstract: The current invention describes a virtual machine designed to run on a variety of platforms of varied capabilities, and in particular describes support in the coding and development environment for assessing and managing the variation in capability and performance among the platforms.

Abstract: A method for inserting an identification modulation code into a printed image. The method has the steps of inserting a start code modulation sequence, followed by the code modulation sequence, and then a stop code modulation sequence. The code is preferably repeated several times throughout the printed image. The modulation sequence can have several levels of subpixel modulation magnitude.

Abstract: A method for processing saturated video intervals in a video sequence. The method either removes or retains the saturated interval. If the interval is removed, the sequence is altered to accommodate the removal. The accommodation is either complete elimination, substitution of a derived interval, or substitution by repeating adjacent intervals. If the interval is retained, information is extracted while limiting the effects of the saturation. The interval can either be encoded with lower data rates, with increased data rates being applied to subsequent intervals, the temporal prediction encoding can be forced to a B interval, an I interval can be inserted, or the sequence restarted, or a coupled encoder decoder system can be set up that uses the same transform and clipping steps to limit the effects of saturation.