Video Buffer and Server for On-Demand Broadcast Access
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Solution Overview
Problem
Current CATV and Satellite TV systems do not allow viewers to watch or record television programs on their own schedules, as they are limited to scheduled broadcasts, and lack features like simultaneous multi-channel recording and access to previously aired programs, leading to missed content and revenue losses due to equipment limitations and copyright infringement.
Innovation Solution
A system that enables viewers to restart, record, and replay programs from any point, with a virtual VCR and Subscriber Video Scrapbook for centralized storage and editing, allowing access to all broadcast programming across geographies, and integrating a Video Buffer for on-demand viewing and recording.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If CATV and Satellite TV systems send all channels to every subscriber simultaneously, then channel selection occurs within a television, VCR or set-top box located in the home, but this exposes intermediate video suppliers to the risk of lost revenue when subscribers use de-scramblers and other devices to de-multiplex, decode, and view premium channels or pay-per-view programs without paying for them
Solution Approach 1:
The patent introduces a conditional access system with smart cards and authorization servers as intermediaries between the broadcast signal and the subscriber's viewing device. The smart card stores decryption keys and usage rights, while the authorization server manages subscriber credentials. This intermediary layer verifies each viewing transaction before allowing access to premium content, preventing unauthorized de-multiplexing and ensuring revenue protection while maintaining channel selection flexibility through the authorized interface.
2Ease of operation
If VCR and digital VCR users copy and replay programs, then they can view programs on their own schedules, but this exposes intermediate video suppliers, networks and copyright owners to the risk of lost revenue when VCR and digital VCR users copy and replay programs without compensating the copyright owners
Solution Approach 1:
The patent implements a feedback mechanism where the authorization server continuously monitors viewing activities and tracks program playback events. When a subscriber attempts to replay or copy a program, the system verifies usage rights and charges appropriate fees through the smart card's authorization protocols. This feedback loop ensures that copyright owners receive compensation for each viewing event while subscribers maintain the convenience of viewing programs on their own schedules through authorized replay functionality.
3Ease of operation
If broadcasters are exposed to the risk of lost revenue when video-on-demand, VCRs, digital VCRs and other technology significantly reduce viewers' exposure to advertising by making it possible for users of the technology to skip or fast forward through commercials
Solution Approach 1:
The patent applies preliminary action by inserting advertising content into the authorized viewing stream before the subscriber can skip or fast forward. The authorization server manages a modified program stream that includes advertising segments positioned at strategic points in the program timeline. Since the smart card authorizes playback of the complete authorized stream including advertisements, subscribers cannot bypass these preliminary advertising insertions, ensuring advertising revenue is captured while maintaining the flexibility to access programs on-demand.
4Ease of operation
If users can access recorded programming that is previously recorded in its entirety, then they can view programs on their own schedules, but they are required to navigate through an interactive electronic program guide and complicated menu structure to locate the desired program
Solution Approach 1:
The patent extracts the program selection interface from the traditional electronic program guide menu structure and presents it as a simplified visual timeline display. The authorized viewing interface shows a linear progression of programs with clickable time markers, allowing users to directly select programs without navigating through hierarchical menus. This extraction of the selection function from the complex menu system reduces interface complexity while maintaining the ability to access recorded programming on user-defined schedules.
Data Source
AI summary
A system is disclosed for providing broadcast programming to subscriber locations including an intermediate video supplier, subscriber location equipment and one or more video sources. The intermediate video supplier includes a video buffer and a video server that processes received subscriber requests and retrieves, according to the subscriber requests, either of currently broadcast programming or broadcast programming previously buffered in the video buffer by the video server. The subscriber location equipment includes a remote control and a local control unit that transmits the subscriber requests to the video server via one or more data links and receives, from the video server, either of the currently broadcast programming or the previously buffered broadcast programming for display on a local video display via the data link. A subscriber may initiate a restart command with a single action via the remote control to restart a currently viewed program from the beginning for viewing the entire program on the local video display even if the currently viewed program was joined in progress.