51 results about "DirectShow" patented technology

This invention applies to software components that interconnect, as in a frameworks, such that only components “certified” by some designated authority can participate, partly or wholly, in the intended operation of the application. The main emphasis is to limit the set of such software components to those that have been deemed to operate in some specific manner and / or in the scope of some specified set of constraints. The initial application for this invention is to prevent piracy of copyrighted data in multimedia frameworks such as Microsoft DirectShow, but the general invention has much wider applicability. Most authentication systems perform their actions prior to using the software component in question. This invention differs significantly in that it performs validation at runtime, rather than before the component is run. Thus, the validation is always at the most vulnerable point in a component's lifetime so far as counterfeiting is concerned.

The invention discloses an intelligent video monitoring system based on a DirectShow technology. The intelligent video monitoring system comprises a DirectShow component module, a video display set module, a motion object detection module and a data coding compression module, wherein the DirectShow component module is used for setting up an original video flow link, capturing an original video flow, and dividing the original video flow; the video display set module is used for setting an image display picture format, and returning the image display picture format to the DirectShow component module to display in real time; the motion object detection module is used for detecting a motion target in a monitoring area, transmitting image data including the motion target to the DirectShow component module to store the image data as a video file and give an alarm, and otherwise, automatically abandoning image data not including the motion target; and the data coding compression module is used for performing subsequent coding compression and storage of the video file stored by the DirectShow component module, and deleting the original video file. According to the intelligent video monitoring system disclosed by the invention, the technical problem that a video monitoring system, which is simple to develop and relatively high in accuracy, is lacking in engineering practices can be solved; and furthermore, the intelligent video monitoring system has the advantages of being low in cost, rapid in calculation speed and better in real-time performance.

The present invention provides a multi-projector fusion method based on GPU real-time video processing, and a multi-projector fusion system based on GPU real-time video processing. According to the present invention, by designing and using an edge fusion and non-linear geometric correction parallel algorithm, and adopting a programming mode of CPU and GPU cooperative operation, the operation speed of the algorithm can be improved effectively, the consumption of the CPU resources is reduced, the dependence on the CPU calculation performance is reduced effectively. More space can be provided for the algorithm performance optimization while improving the hardware utilization rate and the calculation efficiency, so that the final projection and display effect is more natural and smooth. With the help of a DirectShow link model, the adaptive capacity of the system to a playing environment can be enhanced, the filters can be modified or added flexibly to complete the functions of the system, and users can adjust the non-linear geometric correction and edge fusion effects of the projective planes by modifying the parameters of the filters.

Some embodiments provide methods and systems for use in processing encrypted media content through a media processing stack, wherein the media processing stack comprises one or more ordered and successively arranged processing components. These embodiments receive the media content at each successive processing component and pass the media content to a successive processing component; optionally process the media content at each processing component; receive one or more decryption keys associated with the media content at one of the processing components; relay the decryption keys to one or more successive processing components to a decrypting one of the processing components that is capable of decrypting the media content, and decrypt the media content at the decrypting one of the processing components before passing the media content to the successive processing component.

The invention discloses a method for generating a BHD file based on DirectShow. The method comprises the following steps: receiving a request of generating the BHD file based on the DirectShow, resolving source file information from the request, creating a source file filter, and loading source file data; creating a BHD muxer filter, and making pins of the source file filter correspond to pins of the BHD muxer filter to form a link; acquiring media type parameters for linking from the link, and converting the media type parameters for linking into decoder information in a BHD format; transmitting audio and video data of the source file data to the BHD muxer filter through the link, and converting the audio and video data into media data in the BHD format; creating the BHD file according to the decoder information in the BHD format and the source file information; and acquiring the media data in the BHD format, and writing the acquired media data into a data area of the BHD file. Through adoption of the method, the BHD file can be generated on the basis of the DirectShow.