Prior art

The following are the patent citations identified as prior art for US Patent 5132992, along with their details and potential anticipation under 35 U.S.C. § 102, based on the distinctions made within the US5132992 patent document itself.

References Cited in US5132992

1. U.S. Pat. No. 4,506,387 (Walter)

   • Full Citation: U.S. Pat. No. 4,506,387, issued to Walter. [cite: https://patents.google.com/patent/[US5132992](/patent/US5132992)/en]
   • Publication Date: March 1985 [cite: https://patents.google.com/patent/[US5132992](/patent/US5132992)/en]
   • Brief Description: Discloses a fully dedicated, multi-conductor, optical cable system wired to the viewer's premises for accessing audio/video material. It requires the viewer to be at the designated location for both ordering and viewing. [cite: https://patents.google.com/patent/[US5132992](/patent/US5132992)/en]
   • Potential Anticipation: This patent potentially anticipates a basic audio/video transmission system with some control over material access. However, it likely does not anticipate the features of US5132992 related to using multiple existing communication channels (rather than a dedicated cable), allowing users to remotely select material from any location, and sending material to any location chosen by the user for playback at a user-selected time, as highlighted by the objects of the present invention. It also fails to anticipate the efficient data transfer via compression implied in US5132992's claims. [cite: https://patents.google.com/patent/[US5132992](/patent/US5132992)/en]

2. U.S. Pat. No. 4,890,320 (Monslow)

   • Full Citation: U.S. Pat. No. 4,890,320, issued to Monslow. [cite: https://patents.google.com/patent/[US5132992](/patent/US5132992)/en]
   • Publication Date: December 1989 [cite: https://patents.google.com/patent/[US5132992](/patent/US5132992)/en]
   • Brief Description: Describes a system that broadcasts viewer-selected material at a prescribed time. It requires multiple viewers to view material at the broadcast time and does not allow for stop, pause, or multiple viewing functions. [cite: https://patents.google.com/patent/[US5132992](/patent/US5132992)/en]
   • Potential Anticipation: Monslow might anticipate aspects of a system for broadcasting selected audio/video material. However, it fails to anticipate key features of US5132992, particularly those in independent Claims 2 and 3, which involve buffering the received information at the remote location, allowing playback at a time requested by the user, and providing VCR-like functions such as stop, pause, and multiple viewings. [cite: https://patents.google.com/patent/[US5132992](/patent/US5132992)/en]

3. U.S. Pat. No. 4,590,516 (Abraham)

   • Full Citation: U.S. Pat. No. 4,590,516, issued to Abraham. [cite: https://patents.google.com/patent/[US5132992](/patent/US5132992)/en]
   • Publication Date: May 1986 [cite: https://patents.google.com/patent/[US5132992](/patent/US5132992)/en]
   • Brief Description: Discloses a system using a dedicated signal path for transmitting audio/video programming. The receiver lacks storage capability, limiting viewing to the time of ordering and preventing VCR-like stop, pause, and multiple viewing functions. [cite: https://patents.google.com/patent/[US5132992](/patent/US5132992)/en]
   • Potential Anticipation: Abraham could anticipate a system for transmitting audio/video programming for display. Nevertheless, it fails to anticipate core elements of US5132992, especially in independent Claims 2 and 3. Specifically, it does not disclose a system that uses multiple common carriers, has storage capability (buffering) at the receiver, allows for playback at a time specified by the user, or enables VCR-like control (stop, pause, multiple viewings). [cite: https://patents.google.com/patent/[US5132992](/patent/US5132992)/en]

4. U.S. Pat. No. 4,963,995 (Lang)

   • Full Citation: U.S. Pat. No. 4,963,995, issued to Lang. [cite: https://patents.google.com/patent/[US5132992](/patent/US5132992)/en]
   • Publication Date: October 1990 [cite: https://patents.google.com/patent/[US5132992](/patent/US5132992)/en]
   • Brief Description: Discloses an audio/video transceiver capable of editing and/or copying from one video tape to another using a single tape deck. [cite: https://patents.google.com/patent/[US5132992](/patent/US5132992)/en]
   • Potential Anticipation: Lang potentially anticipates an audio/video transceiver with local editing and copying functions. However, US5132992 explicitly states that Lang does not disclose a system with one or more libraries wherein a plurality of system subscribers may access information stored in the film and tape library or libraries, and play back the selected information at a time and place selected by the subscriber. Therefore, Lang would likely not anticipate the central features of independent Claims 1 and 2, which describe a large-scale distribution system with a source material library, compressed data storage, and remote access by multiple users for selected playback. [cite: https://patents.google.com/patent/[US5132992](/patent/US5132992)/en]