Hewlett-packard Company

Farhad Fuad Islam

Junichi Yamazaki

Takahiko Kamae

A digital data distribution system that comprises a broadcasting station and an end station. The broadcasting station broadcasts a broadcast signal repetitively modulated with a digital information signal. The digital information signal includes a file group composed of body files containing any or all of audio, graphics and text information. The end system includes a receiver, a user interface, a memory, a controller and a reproduction section. The receiver receives the broadcast signal from the broadcasting station and demodulates the digital information signal from the broadcast signal to generate a digital bit stream. The user interface allows a user to select at least one of the body files for storage as a selected body file. The memory is substantially smaller than the file group. The controller identifies the selected body file in the digital bit stream and causes the selected body file to be stored in the memory. The reproduction section reproduces the audio, graphics or text information contained in the selected body file stored in the memory.

Digital data distribution system having a reduced end station memory requirement

A system information management unit obtains system information from end systems or media data conversion units and sets end system media data compatibility conditions. The media data conversion units obtain this system information from the system information management unit. When media data are transmitted between the end systems, the media data are first converted in accordance with the system information and then sent to receiving end systems.

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Marsfield, Australia

Farhad Fuad Islam