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Method and system to uniquely associate multicast content with each of multiple recipientsRelated Patent Categories: Data Processing: Financial, Business Practice, Management, Or Cost/price Determination, Business Processing Using CryptographyMethod and system to uniquely associate multicast content with each of multiple recipients description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20060200416, Method and system to uniquely associate multicast content with each of multiple recipients. Brief Patent Description - Full Patent Description - Patent Application Claims
RELATED APPLICATIONS [0001] This application claims the benefit of U.S. Ser. No. 60/654,030, filed Feb. 16, 2005, of U.S. Ser. No. 10/949,825, filed Sep. 24, 2004, and of U.S. Ser. No. 11/179,361, filed Jul. 11, 2005. All applications incorporated herein by reference and all priorities claimed. BACKGROUND OF THE INVENTION [0002] The present invention relates in general to personal communication systems. More particularly, the present invention relates to a videonline security network and methods therefor. [0003] The Internet has become an efficient mechanism for globally distributing digital content, such as movies. However, the advantage of easy digital communication has also allowed the digital content to be easily pirated by just about anyone with a computer and Internet access. The combination of high-speed broadband Internet access, digital content compression software (which reduces the size of digital content files), peer-to-peer file trading networks (which allows users to post content files), and lack of viable digital rights standards, has caused the content owners to lose control of their content. Consequently, content owners are experiencing a loss of potential revenue. [0004] What is needed are advanced techniques for controlling the purchase and use of digital content, such that content owners are fairly compensated without discouraging buyers from purchasing the digital content. SUMMARY OF THE INVENTION [0005] The invention relates to an a method for transmitting a multimedia content file encrypted with a multimedia content key to a rendering device, the rendering device further including a private license key. The method includes configuring a license server with a set of rights associated with the multimedia content file and with a rendering device user. The method also includes requesting that a requested right for the multimedia content file be exercised on the rendering device. The method further includes, if the requested right is included in the set of rights, encrypting the content key with a public license key, wherein the private license key is configured to decrypt the content key. The method also includes transmitting the content key to the rendering device; transmitting the multimedia content file; decrypting the multimedia content file; and rendering the multimedia content file. [0006] The invention relates to an a method of transmitting a multimedia content file encrypted with a multimedia content key to a rendering device, the rendering device further including a private license key. The method includes configuring a license server with a set of rights associated with the multimedia content file and with a rendering device user. The method also includes requesting that a requested right for the multimedia content file be exercised on the rendering device. The method further includes, if the requested right is included in the set of rights, encrypting the content key with a public license key, wherein the private license key is configured to decrypt the content key. The method also includes, if the requested right is not included in the set of rights, billing the rendering device user for the requested right and encrypting the content key with the public license key. The method further includes adding a watermark to the multimedia content file; transmitting the content key to the rendering device; transmitting the multimedia content file; decrypting the multimedia content file; rendering the multimedia content file. [0007] The invention relates to an apparatus for transmitting a multimedia content file encrypted with a multimedia content key to a rendering device with a smart key, the rendering device further including a private license key. The apparatus includes means of configuring a license server with a set of rights associated with the multimedia content file and with a rendering device user. The apparatus also includes means of requesting that a requested right for the multimedia content file be exercised on the rendering device. The apparatus further includes, if the requested right is included in the set of rights, means of encrypting the content key with a public license key, wherein the private license key is configured to decrypt the content key. The apparatus also includes, if the requested right is not included in the set of rights, means of billing the rendering device user for the requested right and encrypting the content key with the public license key. The apparatus further includes means of adding a watermark to the multimedia content file; means of transmitting the content key to the rendering device; means of transmitting the multimedia content file; means of decrypting the multimedia content file; and means of rendering the multimedia content file. [0008] These and other features of the present invention will be described in more detail below in the detailed description of the invention and in conjunction with the following figures. BRIEF DESCRIPTION OF THE DRAWING [0009] The present invention is illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which like reference numerals refer to similar elements and in which: [0010] FIG. 1 shows a simplified diagram of a process for encrypting a multimedia file, according to an embodiment of the invention; [0011] FIG. 2 shows a simplified diagram of a secured multimedia digital content delivery architecture, according to an embodiment of the invention; [0012] FIG. 3 shows a simplified diagram of a multimedia digital content stream, according to an embodiment of the invention; and [0013] FIG. 4 shows a simplified diagram of a method for transmitting a multimedia content file encrypted with a multimedia content key to a rendering device, according to an embodiment of the invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS [0014] The present invention will now be described in detail with reference to a few preferred embodiments thereof as illustrated in the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without some or all of these specific details. In other instances, well known process steps and/or structures have not been described in detail in order to not unnecessarily obscure the present invention. [0015] It is believed by the inventor herein that a digital rights management (DRM) scheme may be implemented, such that a digital multimedia content may be substantially protected by first securely transmitting a content key (CKey) to a trusted digital content rendering device (rendering device), and then transmitting a digital multimedia content encrypted with the CKey to that rendering device. Consequently, the digital multimedia content stream may then be securely played by an authorized user. In an embodiment the digital multimedia content is transmitted as stream. In an embodiment the digital multimedia content is transmitted as a file. In an embodiment, the digital multimedia content is rendered on a DRM player. In an embodiment, the rendering device includes a license manager. In an embodiment, the license manager is integrated with the DRM player as a single application. In an embodiment, the license manager is separate from the DRM player. In an embodiment, the license manager is implemented using a separate processor, such as with a smart key. [0016] As previously described, content owners may experience a loss of potential revenue because of the lack of viable digital rights standards. By some estimates, the loss is about $5 billion a year. However, protecting digital rights should not discourage user purchases of digital content. A strongly designed DRM system that is poorly implemented may protect content, but it may also discourage utilization and hence also cause the loss of revenue. The present invention advantageously combines a strong DRM system with an intuitive and easy user interface, such that utilization is encouraged. In an embodiment, Microsoft, DIVX, Real and other industry supported DRM are supported. [0017] Referring now to FIG. 1. a simplified diagram showing a process for encrypting a multimedia file is shown, according to an embodiment of the invention. Initially, at 102 the multimedia content, typically including a video portion and an audio portion, is digitized normally in an uncompressed format, such as uncompressed AVI, uncompressed MOV, etc. [0018] At 104, the digital multimedia content is encoded and further compressed into the transmission format MPEG (1, 2, 4, etc.), audio (MP3, AAC), JPEG, WMA, RM, compressed AVI, etc. To compress video, for example, a complex mathematical formula breaks the video into individual frames. Each frame is broken into moving and static components. Compression software takes each moving object and guesses where it will be in the next frame. By refreshing only the moving components of a frame, and recycling the static, compression reduces the size and transmission time of the video file. In general, three factors that make up the quality of the video portion: frame rate, color depth and resolution. [0019] Frame rate is generally the number of still images that make up one second of a moving video image. At 30 frames per second (fps), images seem to move fluidly and naturally. However, if the video is going to be rendered on a relatively low bandwidth device, a lower frame rate, such as 10 fps, may be chose. An alternative technique may be a slideshow, in which the frame rate may be limited to one frame every five seconds. Continue reading about Method and system to uniquely associate multicast content with each of multiple recipients... Full patent description for Method and system to uniquely associate multicast content with each of multiple recipients Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Method and system to uniquely associate multicast content with each of multiple recipients patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. Start now! - Receive info on patent apps like Method and system to uniquely associate multicast content with each of multiple recipients or other areas of interest. ### Previous Patent Application: Large capacity data sales server and recording medium recording program thereof Next Patent Application: Method for loaning digital works Industry Class: Data processing: financial, business practice, management, or cost/price determination ### FreshPatents.com Support Thank you for viewing the Method and system to uniquely associate multicast content with each of multiple recipients patent info. IP-related news and info Results in 0.45787 seconds Other interesting Feshpatents.com categories: Accenture , Agouron Pharmaceuticals , Amgen , AT&T , Bausch & Lomb , Callaway Golf 174 |
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