STREAM DEVICE MANAGEMENT SYSTEM FOR MULTIMEDIA CLIENTS IN A BROADCAST NETWORK ARCHITECTURE

• US 20020073218A1
• Filed: 12/23/1998
• Published: 06/13/2002
• Est. Priority Date: 12/23/1998
• Status: Abandoned Application

• Current Assignee: Scientific-Atlanta LLC (Cisco Systems, Inc.)
• Original Assignee: Scientific-Atlanta LLC (Cisco Systems, Inc.)
• Inventors: STALKER, ALTAN J., HOLLINGER, ANDRE, MINCONE, JOSEPH, SALZMAN, LEE, ASPROMONTE, BILL J., MINCONE, JOHN
• Application Number:
  US09/219,011
• Publication Number:
  US 20020073218A1
• Time in Patent Office: Days
• US Class Current: 709/231
• CPC Class Codes: H04N 21/443 OS processes, e.g. booting an STB, implementing a Java virtual machine in an STB or power management in an STB

Abstract

A stream device management system is provided for supporting applications that access a variety of stream devices associated with a conventional set-top box. More specifically, the stream device management system includes a stream manager configured to identify a plurality of stream devices and to store a device identifier for each of these stream devices, and a shared memory for storing stream data associated with each of the stream devices. To initiate communication with a first stream device, a first application sends a device identifier indicative of the first stream device to the stream manager. In response to receiving the device identifier, the stream manager communicates an address for the shared memory associated with the first stream device to the first application. Lastly, the application uses this address to access the stream data.

Claims

1. A device management system for supporting applications that reside on a multimedia client, the applications interacting with a plurality of stream devices associated with the multimedia client, comprising:

a stream manager being configured to identify the plurality of stream devices and store a device identifier for each of said stream devices;

a first application being operative to initiate communication between a first stream device and said first application by sending a device identifier to said stream manager, said device identifier indicative of said first stream device; and

said stream manager being operative, in response to receiving a device identifier from said first application, to stream data between said first application and said first stream device.

2. The device management system of claim 1 wherein said device identifier includes a device type identifier and device access information for said first stream device.

3. The device management system of claim 1 wherein said device identifier is a Uniform Resource Locator (URL).

4. The device management system of claim 1 further comprises a shared memory accessible to said first application and said first stream device for storing stream data, said stream manager being operative to communicate an address for said shared memory to said first application and said first application using said address to read the stream data.

5. The device management system of claim 4 wherein said stream manager being operative to communicate said address for said shared memory to a second application and said second application using said address to read the stream data.

6. A method for accessing stream data from a stream device by an application residing on a multimedia client, comprising the steps of:

configuring a stream manager to identify a plurality of stream devices associated with the multimedia client and to store a device identifier for each of said stream devices;

requesting access to a first stream device by a first application residing on the multimedia client, said first application sending a first device identifier indicative of a first stream device to said stream manager;

determining an address for stream data associated with said first stream device by said stream manager in response to receiving said first device identifier from said first application, the stream data being stored in a shared memory on the multimedia client;

communicating said address from said stream manager to said first application; and

accessing the stream data by said first application using said address.

7. The method of claim 6 wherein the step of requesting access to a first stream device further comprises using a device type identifier and device access information for said first stream device as said first device identifier.

8. The method of claim 6 wherein the step of configuring a stream manager further comprises using a Uniform Resource Locator (URL) as said device identifier.

9. The method of claim 6 further comprises the steps of communicating said address for said shared memory to a second application and accessing the stream data by said second application using said address.