Data distribution device and method, and data receiving device and method
First Claim
Patent Images
1. A data distribution device comprising:
- resending request responding means for receiving, from a receiving device having received a data stream composed of a plurality of transmission units and broadcasted by a broadcasting transmission system, a request to resend the data stream of some transmission units; and
resending means for resending the data stream of the transmission units via a two-way communication line.
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Abstract
It is an object of this invention to correct a receiving error of a data stream in a set-top box when a software program is distributed by using data broadcasting. A base station converts a software program into a data stream of DSM-CC data carousel type, divides the data stream into transport packets of MPEG-2 type, and distributes the software program to the set-top box via a communications satellite. If the set-top box detects any receiving error of the data stream, it requests the base station to resend the transport packet which has not been properly received. The base station then resends the requested transport packet to the set-top box via a public circuit.
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Citations
39 Claims
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1. A data distribution device comprising:
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resending request responding means for receiving, from a receiving device having received a data stream composed of a plurality of transmission units and broadcasted by a broadcasting transmission system, a request to resend the data stream of some transmission units; and
resending means for resending the data stream of the transmission units via a two-way communication line. - View Dependent Claims (27)
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2. A data distribution method of receiving, from a receiving device having received a data stream composed of a plurality of transmission units and broadcasted by a broadcasting transmission system, a request to resend the data stream of some transmission units, and resending the data stream of the transmission units via a two-way communication line.
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3. A data distribution device comprising:
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resending request responding means for receiving, from a receiving device having received a data stream composed of a plurality of transmission units and broadcasted via a cable network, a request to resend the data stream of some transmission units; and
resending means for resending the data stream of the transmission units via a two-way cable network.
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4. A data distribution method of receiving, from a receiving device having received a data stream composed of a plurality of transmission units and broadcasted via a cable network, a request to resend the data stream of some transmission units, and resending the data stream of the transmission units via a two-way cable network.
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5. A data receiving device for receiving data broadcast broadcasted in one direction by means of a ground wave or a satellite wave, comprising:
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receiving means for receiving a data stream composed of a plurality of transmission units appropriate for a specified broadcasting transmission system;
resending requesting means for requesting a data distribution device via a two-way communication line to resend any data stream of the transmission units which has not been properly received, and for receiving the data stream of the transmission units via the two-way communication line. - View Dependent Claims (6)
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7. A data receiving method of receiving data broadcast broadcasted in one direction by means of a ground wave or a satellite wave, comprising the steps of:
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receiving a data stream composed of a plurality of transmission units appropriate for a specified broadcasting transmission system;
requesting a data distribution device via a two-way communication line to resend any data stream of transmission units, which has not been properly received; and
re-receiving the data stream of the transmission units via the two-way communication line. - View Dependent Claims (8)
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9. A data receiving device for receiving a data stream broadcasted in one direction via a cable network, comprising:
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receiving means for receiving a data stream composed of a plurality of transmission units; and
resending requesting means for requesting a data distribution device via a two-way cable network to resend any data stream of transmission units which has not been properly received, and for receiving the data stream of the transmission units via the two-way cable communication network. - View Dependent Claims (10, 29)
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11. A receiving method of receiving a data stream broadcasted in one direction via a cable network, comprising the steps of:
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receiving a data stream composed of a plurality of transmission units;
requesting a data distribution device via a two-way cable network to resend any data stream of transmission units which has not been properly received; and
re-receiving the data stream of the transmission units via the two-way cable communication network. - View Dependent Claims (12, 14, 16, 30)
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13. A data distribution system comprising:
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broadcasting means for converting content data to a data stream appropriate for a specified broadcasting transmission system, dividing the data stream into a plurality of transmission units, and broadcasting the content data. to a plurality of receiving devices in one direction by the broadcasting transmission system; and
resending means for resending any data stream of transmission units which has not been properly received by the receiving device, to the receiving device via a two-way communication line if a resending request of the data stream is made from the receiving device via the two-way communication line. - View Dependent Claims (31)
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15. A data distribution method comprising the steps of:
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converting content data to a data stream appropriate for a specified broadcasting transmission system;
dividing the data stream into a plurality of transmission units, and broadcasting the content data to a plurality of receiving devices in one direction by the broadcasting transmission system; and
resending any data stream of transmission units which has not been properly received by the receiving device, to the receiving device via a two-way communication line if a resending request of the data stream is made from the receiving device via the two-way communication line. - View Dependent Claims (28)
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17. A data distribution system comprising:
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broadcasting means for converting content data to a data stream appropriate for a specified broadcasting transmission system, dividing the data stream into a plurality of transmission units, and broadcasting the content data to a plurality of receiving devices in one direction via a cable network; and
resending means for resending any data stream of transmission units which has not been properly received by the receiving device, to the receiving device via a two-way cable network if a resending request of the data stream is made from the receiving device via the two-way cable network.
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18. A data distribution method comprising the steps of:
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converting content data to a data stream appropriate for a specified broadcasting transmission system;
dividing the data stream into a plurality of transmission units, and broadcasting the content data to a plurality of receiving devices in one direction via a cable network; and
resending any data stream of transmission units which has not been properly received by the receiving device, to the receiving device via a two-way cable network if a resending request of the data stream is made from the receiving device via the two-way cable network.
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19. A software program distribution device comprising:
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receiving means for receiving a software download request from a receiving device having received software program update information broadcasted by a broadcasting transmission system; and
distribution means for distributing a software program corresponding to the update information to the receiving device via a two-way communication line.
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20. A software program distribution method comprising the steps of:
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receiving a software download request from a receiving device having received software program update information broadcasted by a broadcasting transmission system; and
distributing a software program corresponding to the update information to the receiving device via a two-way communication line.
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21. A software program distribution device comprising:
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receiving means for receiving a software download request from a receiving device having received software program update information broadcasted via a cable network; and
distribution means for distributing a software program corresponding to the update information to the receiving device via a two-way cable network.
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22. A software program distribution method comprising the steps of:
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receiving a software download request from a receiving device having received software program update information broadcasted via a cable network; and
distributing a software program corresponding to the update information to the receiving device via a two-way cable network.
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23. A software program receiving device comprising:
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receiving means for receiving software program update information broadcasted in one direction by a broadcasting transmission system using a ground wave or a satellite wave; and
downloading means for comparing the software program update information which has been already received, with software program update information which has been broadcasted, and requesting, via a two-way communication line, a data distribution device to download a software program corresponding to the broadcasted update information if it is necessary to update the software program already received, and downloading the software program via the two-way communication line.
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24. A software program receiving method comprising the steps of:
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receiving software program update information broadcasted in one direction by a broadcasting transmission system using a ground wave or a satellite wave;
comparing the software program update information which has been already received, with software program update information which has been broadcasted;
requesting, via a two-way communication line, a data distribution device to download a software program corresponding to the broadcasted update information if it is necessary to update the software program already received; and
downloading the software program via the two-way communication line.
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25. A software program receiving device comprising:
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receiving means for receiving software program update information broadcasted in one direction via a cable network; and
downloading means for comparing the software program update information which has been already received, with software program update information which has been broadcasted, and requesting, via a two-way cable network, a data distribution device to download a software program corresponding to the broadcasted update information if it is necessary to update the software program already received, and downloading the software program via the two-way cable network.
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26. A software program receiving method comprising the steps of:
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receiving software program update information broadcasted in one direction via a cable network;
comparing the software program update information which has been already received, with software program update information which has been broadcasted;
requesting, via a two-way cable network, a data distribution device to download a software program corresponding to the broadcasted update information if it is necessary to update the software program already received; and
downloading the software program via the two-way cable network.
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32. A data receiving device comprising:
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receiving means for receiving a content broadcasted in one direction by a broadcasting transmission system using a ground wave or a satellite wave; and
display means for displaying a selection screen of the received content, wherein, the data receiving device comprises display means for performing display processing to display a selection screen of the content to be updated in a different manner from a selection screen of the other received content while receiving data regarding the content to be updated.
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33. A selection screen displaying method for displaying, at the time of displaying a selection screen of a received content which has been broadcasted in one direction by a broadcasting transmission system by means of a ground wave or a satellite wave, a selection screen of the content to be updated in a different manner from a selection screen of the other received content while receiving data regarding the content to be updated.
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34. A data receiving device comprising:
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receiving means for receiving a content broadcasted in one direction via a cable network; and
display means for displaying a selection screen of the received content, wherein, the data receiving device comprises display means for performing display processing to display a selection screen of the content to be updated in a different manner from a selection screen of the other received content while receiving data regarding the content to be updated.
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35. A selection screen displaying method for displaying, at the time of displaying a selection screen of a received content which has been broadcasted in one direction via a cable network, a selection screen of the content to be updated in a different manner from a selection screen of the other received content while receiving data regarding the content to be updated.
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36. A data receiving device comprising:
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receiving means for receiving content distribution guide information broadcasted in one direction by a broadcasting transmission system using a ground wave or a satellite wave; and
display means for displaying a reception reservation guide screen by distinguishing any unreceived content from the received content if the content contained in the distribution guide information includes any unreceived content.
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37. A reception reservation guide screen displaying method comprising the steps of:
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receiving content distribution guide information broadcasted in one direction by a broadcasting transmission system using a ground wave or a satellite wave; and
displaying a reception reservation guide screen by distinguishing any unreceived content from the received content if the content contained in the distribution guide information includes any unreceived content.
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38. A data receiving device comprising:
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receiving means for receiving content distribution guide information broadcasted in one direction via a cable network; and
display means for displaying, a reception reservation guide screen by distinguishing any unreceived content from the received content if the content contained in the distribution guide information includes any unreceived content.
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39. A reception reservation guide screen displaying method comprising the steps of:
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receiving content distribution guide information broadcasted in one direction via a cable network; and
displaying a reception reservation guide screen by distinguishing any unreceived content from the received content if the content contained in the distribution guide information includes any unreceived content.
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Specification