Shared video data storage system with separate video data and information buses

• US 6,160,547 A
• Filed: 10/12/1995
• Issued: 12/12/2000
• Est. Priority Date: 10/12/1995
• Status: Expired due to Term

• Current Assignee: HBC Solutions Incorporated (AEG Holdings, Inc.)
• Original Assignee: Asc Audio Video Corporation
• Inventors: Roth, Todd
• Primary Examiner(s): Miller, John W.
• Application Number:
  US08/542,440
• Time in Patent Office: 1,888 Days
• Field of Search: 395/200.09, 395/200.47-200.49, 395/894, 348/6, 348/7, 348/8, 348/10, 348/12, 348/13, 348/722, 348/9, 455/3.1, 455/4.1, 455/4.2, 455/5.1, 455/6.1, 455/6.2
• US Class Current: 715/723
• CPC Class Codes: H04L 67/01 Protocols
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04N 21/222 Secondary servers, e.g. proxy server, cable television Head-end provisioning of proxy services in data packet switching networks H04L67/56
• CPC Class Codes: H04N 21/2225 Local VOD servers
• CPC Class Codes: H04N 21/23106 involving caching operations prefetching while addressing of a memory level in which the access to the desired data or data block requires associative addressing means within memory systems or architectures G06F12/0862; caching at an intermediate stage in a data network H04L67/568
• CPC Class Codes: H04N 21/47202 for requesting content on demand, e.g. video on demand
• CPC Class Codes: H04N 7/17336 Handling of requests in head-ends

Abstract

A shared video data storage system eliminates the need for a costly dedicated server and high performance network connection in audio/video media delivery applications. Instead of stations requesting material from a server and waiting for the data to be delivered across the network from the storage devices via the server, the storage devices are connected locally to each station. Access is arbitrated locally over a low performance (and consequently lower cost) network and access is provided directly via the storage interface.

Claims

1. A server-less shared video data storage system comprising:

a storage device for storing digital video data;

a plurality of client stations;

a digital video data transfer bus coupled to the storage device and each of the client stations such that all of the client stations have direct simultaneous random access to the digital video data;

an information data bus coupled to each of the client stations for transferring data between the client stations;

arbitration means distributed solely within the client stations for allocating access to the storage device among the client stations via the information data bus.

2. The system of claim 1 wherein the arbitration means comprises a token passed between the client stations over the information data bus.

3. The system of claim 1 wherein the information data bus is an Ethernet bus.

4. The system of claim 1 wherein the video data transfer bus is a SCSI bus.

5. The system of claim 1 wherein the storage device comprises a disk drive.

6. The system of claim 1 wherein the storage device comprises an array of disk drives.