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Distribution-of-television-signals-to-workstations

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Distribution of television signals to workstations

Details

Inventors: Nusbickel, Wendi L.; Schneider, Ira H.;
Assignee: International Business Machines Corporation (Armonk, NY)
Primary Examiner: Peng; John K.
Assistant Examiner: Grant; Chris
Attorney, Agent or Firm: LaBaw; Jeffrey S., Dillon; Andrew J.

Digital video data (such as full motion video and audio) is distributed over a computer network to workstations by an analog video server. The network carries digital network signal traffic. The analog video server retrieves video data from a storage device. The analog video server then decompresses the digital data and converts it into an analog signal. The analog signal is shifted to a bandwidth (such as television channels) that is different from the bandwidth of the network signal traffic, and then combined with the network signal traffic to be distributed over the network. At a workstation, the analog signal is split off of the network signal traffic and provided to a display. Plural workstations can display the same analog signal. Schedules for broadcast times are provided on the network to the workstations. Plural channels in the analog signal bandwidth can be utilized to simultaneously broadcast plural analog signals to the workstations.

DETAILED DESCRIPTION It is therefore an object of the present invention to provide a video server that provides a greater capacity for providing video data to workstations.
It is a further object of the present invention to provide a video server that provides a single video data file to plural workstations.
It is a further object of the present invention to reduce the expense of video systems.
The method and system of the present invention distribute digital video data to workstations over a network.
The network communicatively links the workstations to each other and to a video source.
The network carries digital network signals.
The digital video data is converted into an analog television signal.
The television signal is broadcast to the workstations over the network.
The broadcast television signal is received at one of the workstations and is displayed.
In accordance with one aspect of the present invention, before the digital video data is converted into an analog television signal, the digital video data is retrieved from storage and is decompressed.
In accordance with another aspect of the present invention, the digital video data is converted into a very high frequency (VHF) or an ultrahigh frequency (UHF) television signal.
In accordance with another aspect of the present invention, the television signal is broadcast to the workstations over the network by multiplexing the television signal with the network signals and transmitting the television and the network signals over a cable.
In accordance with another aspect of the present invention, the digital video data comprises first video data and second video data.
The first video data is converted into a first analog television signal at a first frequency.
The second video data is converted into a second analog television signal at a second frequency.
The first and second television signals are simultaneously broadcast over the network to the workstations.
Either the first television signal or the second television signal is displayed at a workstation

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