| 摘要 |
<p>A data transmission apparatus suitable for use in a VOD system which can send program data in response to requests made at any time. In the data transmission apparatus of the present invention, a series of data is read from a mass storage at a high speed referring to a data recording table in which are recorded the head address and magnitude of the series of data which are to be simultaneously read and the magnitudes of the individual data. For the read data, the magnitudes of individual data of the table are referred to, separated to individual data, and recorded in the buffer memory (33-1 to 33-n) for every output channel. The data is appropriately processed and transmitted for every channel by the buffer memory controllers (32-1 to 32-n) provided for every output channel and output controllers (35-1 to 35-n) and formatter. By this, it is possible to provide a data transmission apparatus in which desired data can be transmitted from the recording apparatus in which individual data are recorded with a variable data rate in parallel at a high speed, a variety of programs can be recorded with a good efficiency, and no deterioration occurs in the picture.</p> |
