Receiving apparatus and control method therefor
First Claim
1. A digital broadcast receiving apparatus comprising:
- generating means for receiving a digital broadcast and generating a data stream from a digital broadcast signal having a desired modulation frequency;
input means for inputting a data stream based on a digital broadcast from an external digital broadcast receiving apparatus;
playback means for playing back a content of a channel contained in one of the data streams obtained by said generating means and input means; and
storage means for storing a content of a channel contained in the data stream other than the data stream to be played back by said playback means in a data storage medium,wherein said input means comprises;
acquisition means for acquiring a channel information indicative of a channel that can be received by the external digital broadcast receiving apparatus from the external digital broadcast receiving apparatus, anddetermination means for determining on the basis of the channel information acquired by said acquisition means whether the external digital broadcast receiving apparatus can receive a digital broadcast signal containing a desired channel, andinputs the data stream from the external digital broadcast receiving apparatus that is determined by said determination means as an apparatus capable of receiving the desired channel.
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Accused Products
Abstract
The tuner unit of a digital broadcast receiving apparatus receives a digital broadcast and generates a data stream from a digital broadcast signal having a desired modulation frequency. A data stream of a digital broadcast is also input from an external digital broadcast receiving apparatus via an external I/F. A stream switching unit and demultiplexer play back the content on a desired channel, contained in the two data streams, on an image display unit in real time, and at the same time, store the content on the other channel, contained in the other data stream, in a storage unit. This makes it possible to watch one of at least two programs with different modulation frequencies while recording the other program.
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Citations
22 Claims
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1. A digital broadcast receiving apparatus comprising:
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generating means for receiving a digital broadcast and generating a data stream from a digital broadcast signal having a desired modulation frequency; input means for inputting a data stream based on a digital broadcast from an external digital broadcast receiving apparatus; playback means for playing back a content of a channel contained in one of the data streams obtained by said generating means and input means; and storage means for storing a content of a channel contained in the data stream other than the data stream to be played back by said playback means in a data storage medium, wherein said input means comprises; acquisition means for acquiring a channel information indicative of a channel that can be received by the external digital broadcast receiving apparatus from the external digital broadcast receiving apparatus, and determination means for determining on the basis of the channel information acquired by said acquisition means whether the external digital broadcast receiving apparatus can receive a digital broadcast signal containing a desired channel, and inputs the data stream from the external digital broadcast receiving apparatus that is determined by said determination means as an apparatus capable of receiving the desired channel. - View Dependent Claims (2, 3, 4)
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5. A digital broadcast receiving apparatus having generating means for receiving a digital broadcast and generating a data stream from a digital broadcast signal having a desired modulation frequency, comprising:
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notification means for notifying information of a channel that can be received in accordance with a request from an external digital broadcast receiving apparatus; control means for controlling said generating means in accordance with a request from the external digital broadcast receiving apparatus so as to generate a data stream from a digital broadcast signal having a modulation frequency containing a designated channel; and output means for outputting the data stream containing the designated channel, generated by said generating meals, to the external digital broadcast receiving apparatus. - View Dependent Claims (6, 7)
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8. A digital broadcast receiving system in which a plurality of digital broadcast receiving apparatuses are connected to each other via communication means so as to be able to communicate with each other, comprising:
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generating means for receiving a digital broadcast and generating a data stream from a digital broadcast signal having a desired modulation frequency in a first digital broadcast receiving apparatus; input means for allowing the first digital broadcast receiving apparatus to input a data stream based on a digital broadcast from an external digital broadcast receiving apparatus via the communication means; playback means for allowing the first digital broadcast receiving apparatus to play back in real time a content of a channel contained in one of the data streams respectively obtained by said generating means and input means; and storage means for allowing the first digital broadcast receiving apparatus to store in a data storage medium a content of a channel contained in the data stream other than the data stream to be played back by said playback means, wherein said input means comprises; acquisition means for acquiring information of a channel that can be received from an external digital broadcast receiving apparatus via the communication means, and determination means for determining on the basis of the information of the channel acquired by said acquisition means whether the external digital broadcast receiving apparatus can receive a digital broadcast signal containing a desired channel, and inputs the data stream from the external digital broadcast receiving apparatus that is determined by said determination means as an apparatus capable of receiving the desired channel. - View Dependent Claims (9, 10, 11)
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12. A control method for a digital broadcast receiving apparatus having a generating step of receiving a digital broadcast and generating a data stream from a digital broadcast signal having a desired modulation frequency, comprising:
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a notification step of notifying information of a channel that can be received in accordance with a request from an external digital broadcast receiving apparatus; a control step of controlling the generating step in accordance with a request from the external digital broadcast receiving apparatus so as to generate a data stream from a digital broadcast signal having a modulation frequency containing a designated channel; and an output step of outputting the data stream containing the designated channel, generated in the generating step, to the external digital broadcast receiving apparatus.
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13. A receiving apparatus comprising:
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reception means for receiving a digital broadcast signal and generating a first data stream in accordance with the digital broadcast signal; input means for inputting a second data stream from an external receiving apparatus; selection means for selectively outputting the first data stream generated by said receiving means and the second data stream input by said input means; and control means for detecting a channel that can be received by the external receiving apparatus and controlling selecting operation of said selection means in accordance with the detection result. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification