Receiver, recorder and player

Details Receiver, recorder and player Receiver, recorder and player

2000-06-22

2004-06-22

Chevalier, Robert (Department: 2615)

Motion video signal processing for recording or reproducing

Local trick play processing

With randomly accessible medium

C386S349000, C725S039000

Reexamination Certificate

active

06754437

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Technical Field
The present invention relates to a receiving apparatus, a recording apparatus and a reproduction apparatus, and, more particularly, to a receiving apparatus, a recording apparatus and a reproduction apparatus which is enabled to record an interactive program in a digital magnetic recording/reproduction apparatus in which the interactive program allows an interactive exchange of information between a viewer and a broadcasting station, by, for example, transmitting the program by digital CS broadcasting, adding additional video to original broadcast video, and making the viewer who viewed the video respond.
2. Description of the Related Art
Conventionally, there is no type of the above-described apparatus, but there are only home television receivers for receiving digital CS broadcasting.
FIG. 12
is a block diagram illustrating the structure of the conventional digital CS television receiver.
In
FIG. 12
, reference numeral
1
denotes an antenna for receiving CS broadcasting. Numeral
2
denotes a receiving unit for receiving the CS broadcasting that is received by the antenna
1
and for demodulating the received CS broadcasting. Numeral
3
denotes a transport decoder for descrambling an MPEG transport stream that is received and demodulated by the receiving unit
2
and for extracting necessary information from the descrambled MPEG transport stream. Numeral
4
denotes an AV decoder for decoding MPEG data concerning video or audio (AV) data that is extracted by the transport decoder
3
. Numeral
5
denotes an OSD (On Screen Display) inserting unit for performing superimposition to a video output among outputs of the AV decoder
4
. Numeral
6
denotes a display for displaying an output of the OSD (On Screen Display) inserting unit
5
. Numeral
7
denotes a speaker for outputting an audio output among the outputs of the AV decoder
4
as a sound.
Next, an operation of the conventional digital CS television receiver will be described. CS broadcast waves that are relayed from a broadcasting station (not shown) by a communication satellite (CS) are received by the antenna
1
for receiving the CS broadcasting, and the received CS broadcast waves are introduced into a digital CS television receiver.
In the digital CS television receiver, the receiving unit
2
selects a CS broadcasting station that is selected by a viewer and demodulates the CS broadcast waves of the selected CS broadcasting station.
Accordingly, an MPEG transport stream is demodulated from the waves of the selected CS broadcasting station and the demodulated MPEG transport stream is transmitted to the transport decoder
3
.
The transport decoder
3
descrambles the MPEG transport stream, which was previously scrambled by the broadcasting station, so that original video can be obtained when the MPEG transport stream is later MPEG-decoded. Then, the transport decoder
3
extracts necessary information, i.e., MPEG data concerning video or audio (AV), from the descrambled MPEG transport stream.
The AV decoder
4
executes a MPEG decoding algorithm to the AV MPEG data that is extracted by the transport decoder
3
, thereby expanding the data.
The On Screen Display inserting unit
5
generates On Screen information such as a channel that is selected by the viewer or a program table, and superimposes the On Screen information on an original video signal that is demodulated by the AV decoder
4
so as to output the signal.
The display
6
projects the output of the On Screen Display inserting unit
5
, which thereby normally displays the original video of the CS broadcasting. When the channel is selected, the display
6
displays video which is obtained by superimposing the information such as the channel that is selected by the viewer on the original video until a predetermined time elapses thereafter.
The speaker
7
outputs an audio signal that is expanded by the AV decoder
4
as a sound.
The conventional digital CS broadcasting receiver is constructed as above, and as a result, multichannel broadcasting of a greater number of channels than the number of channels of the ground waves can be viewed.
With the spread of the digital CS broadcasting receivers, a request to record a broadcast program in a magnetic recording/reproduction apparatus, i.e., a so-called VTR, and to reproduce the program at a required time is naturally produced.
As described above, MPEG transport streams are transmitted as broadcasting information in the digital CS broadcasting. Therefore, a so-called DVHS-standard digital VTRs for recording the MPEG transport stream on a cassette similar to a widespread VHS-standard video cassette as the MPEG transport stream is in the digital format, and reproducing the same are suggested.
In the digital CS broadcasting, digital information other than the original MPEG transport stream can also be transmitted. However, some types of the digital information require time information, such as data that is called “programming” for realizing an interactive program. The conventional digital VTR cannot cope with the recording and reproducing of such digital information, because the conventional digital VTR merely copes with the recording and reproducing of the MPEG transport streams.
In addition, when a medium on which the “programming” is recorded is fast-forwarded and is then returned to the normal reproduction process, sometimes the “programming” should be reloaded, and thus, when the “programming” is one for performing the screen processing, sometimes the screen goes black for a while.
The present invention is made to solve the problems of the above-described prior art. An object of the present invention is to provide a receiving apparatus, a recording apparatus and a reproduction apparatus which also enables digital information requiring time information to be recorded and reproduced.
In addition, the present invention is made to solve the problems of the above-described prior art. Another object of the present invention is to provide a receiving apparatus, a recording apparatus and a reproduction apparatus which do not need to reload the “programming” even when the medium on which the “programming” is recorded is fast-forwarded and returned to the normal reproduction process.
SUMMARY OF THE INVENTION
To solve the above-described problems, a receiving apparatus according to a first aspect of the present invention comprises: an interactive program receiving unit for receiving interactive program broadcasting which includes, in a TDT (Time and Data Table), an absolute time when the broadcasting is executed, and at least one of video and audio and interactive programming, which are indicated, to be a part of the broadcasting; and a broadcast time obtaining unit for obtaining information of the absolute time when the broadcasting is performed, and for managing the absolute time information.
According to the present invention, the interactive program broadcasting can be received together with the time information, which is required in the reproduction of the broadcasting.
A recording apparatus according to a second aspect of the present invention, which records the interactive program received by the receiving apparatus of the first aspect, comprises: a recording program information creation unit for creating an SIT as program information for the recording of the interactive program; a time information management unit for recording the absolute time information that is obtained by the broadcast time obtaining unit, which information is recorded from the TDT, in either of a first descriptor or a second descriptor of the SIT (Selection Information Table); and a storage unit for storing the interactive program that is received by the interactive program receiving unit, in a recording area on a recording medium, and for storing the absolute time information that is obtained from the first descriptor or the second descriptor of the SIT in another area on the recording medium or in a recording apparatus.
According to the present invention, the interactive program broadcast

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