摘要:
A method and apparatus for automatically providing continuous programming on a broadcast channel. The method and apparatus detect the occurrence of an event, selects content to use as the continuity programming in view of at least one characteristic of the event, and transmits the selected content through the broadcast channel.
摘要:
A queuing architecture and method for scheduling disk drive access requests in a video server. The queuing architecture employs at least two access request queues for each disk drive within a disk drive array, and a queue selector for selecting the first and second queues. The first queue is for disk access requests by steady-state users requesting new data streams who are currently viewing a program from the video server. The second queue is for all other types of disk access requests, including requests by new users, requests for loading content, disk maintenance, meta-data synchronizing, and the like. Steady-state disk access requests are serviced in order of ascending time deadlines. The queue selector gives highest priority to requests in the first queue, and requests from the second queue are serviced only upon a guarantee that all of the steady-state requests in the first queue will meet their time deadlines in the worst case access times for the disk drives. The second queue may comprise multiple queues to provide a queuing hierarchy including a third queue. Non-steady-state disk access requests are serviced on a first-in-first-out basis. The queue selector establishes priority in response to the location of the data upon a disk in a disk drive, and data may be stored in a disk drive based upon the queuing priority. The selecting and forwarding of the access requests to a disk drive may be performed repeatedly while an internet queue within a disk drive is not full, and there are outstanding access requests for that disk drive.
摘要:
A method and apparatus for providing a transition between multimedia content, e.g., video clips. The method and apparatus detects a transition trigger that identifies that a transition is necessary at a specific point within a currently playing video clip. The method and apparatus select a driver level API for producing a desired transition effect, then executes the selected API to produce the transition effect. The transition API controls a video decoder such that a currently playing video can be altered at the transition point to have a specific transition effect. Controlling the luminance and audio signal levels of the decoder creates the desired transition effect.
摘要:
A queuing architecture and method for scheduling disk drive access requests in a video server. The queuing architecture employs a controlled admission policy that determines how a new user is assigned to a specific disk drive in a disk drive array. The queuing architecture includes, for each disk drive, a first queue for requests from users currently receiving information from the server, and a second queue for all other disk access requests, as well as a queue selector selecting a particular first queue or second queue for enqueuing a request based on the controlled admission policy. The controlled admission policy defines a critical time period such that if a new user request can be fulfilled without causing a steady-state access request for a particular disk drive to miss a time deadline, the new user request is enqueued in the second queue of the particular disk drive; otherwise, the controlled admission policy enqueues the new user request in a second queue of another disk drive.
摘要:
A queuing architecture and method for scheduling disk drive access requests in a video server. The queuing architecture employs a controlled admission policy that determines how a new user is assigned to a specific disk drive in a disk drive array. The queuing architecture includes, for each disk drive, a first queue for requests from users currently receiving information from the server, and a second queue for all other disk access requests, as well as a queue selector selecting a particular first queue or second queue for enqueuing a request based on the controlled admission policy. The controlled admission policy defines a critical time period such that if a new user request can be fulfilled without causing a steady-state access request for a particular disk drive to miss a time deadline, the new user request is enqueued in the second queue of the particular disk drive; otherwise, the controlled admission policy enqueues the new user request in a second queue of another disk drive.