EP0827336A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Digital broadcasting system, digital broadcasting apparatus, and associated receiver therefor
Assignee: Panasonic Holdings Corp
•
Filing: 1997-08-29
•
Granted: —
•
Expires: 2017-08-29
Abstract
Abstract A broadcasting system which includes a broadcasting apparatus and a reception apparatus and which achieves interactiveness using a broadcast wave. The broadcasting apparatus includes a content storing unit for storing the plurality of contents, each content including a set of video data and a set of control information that indicates another content that is a link destination for a present content, and a transmitting unit for multiplexing a set of video data and a plurality of sets of the same control information included in a same content as the set of video data, and for transmitting the multiplexed sets of video data and control information. The reception apparatus includes an extracting unit for extracting a set of video data and a set of control information in a same content as the set of video data, a storing unit for storing the extracted set of control information, a reproducing unit for reproducing the extracted set of video data and outputting an image signal, an operation unit for receiving a user operation that indicates a content switching, and a control unit for controlling the extracting unit to extract another content indicated by the set of control information stored in the storing unit, in accordance with the user operation.
Inventors
- 👤 Tatsuya Shimoji
- 👤 Kazuo Okamura
- 👤 Junichi Hirai
- 👤 Masahiro Oashi
- 👤 Takashi Kakiuchi
- 👤 Yuki Kusumi
- 👤 Yoshiyuki Miyabe
- 👤 Ikuo Minakata
- 👤 Masayuki Kozuka
- 👤 Yoshihiro Mimura
- 👤 Shinji Inoue
- 👤 Toshiya Mori
- 👤 Naoya Takao
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 09:58
CPC Classifications
H; H04; H04N; H04N7/00; H04N7/16; H04N7/173; H04N21/00; H04N21/40; H04N21/45; H04N21/454; H04N21/20; H04N21/23; H04N21/235; H04N21/236; H04N21/23614; H04N21/2362; H04N21/41; H04N21/426; H04N21/43; H04N21/434; H04N21/4345; H04N21/4348; H04N21/435; H04N21/47; H04N21/472; H04N21/4722; H04N21/488; H04N21/80; H04N21/81; H04N21/8126; H04N21/83; H04N21/845; H04N21/8455; H04N21/85; H04N21/854; H04N21/8545; H04N7/20; H04N9/00; H04N9/79; H04N9/80; H04N9/82; H04N9/8205; H04N9/8227; H04N5/00; H04N5/44; H04N5/445
Claims Analysis
Total Claims: 49
Claim 1
Independent Claim
103 words
A broadcasting apparatus for broadcasting an interactive
program composed of a plurality of contents that are linked
to one another, the broadcasting apparatus comprising: content storing means for storing the plurality of
contents, each content including a set of video data and a
set of control information that indicates another content
that is a link destination for a present content; and transmitting means for multiplexing a set of video
data and a plurality of sets of the same control information
included in a same content as the set of video data, and for
transmitting the multiplexed sets of video data and control
information.
Claim 2
Dependent Claim
80 words
The broadcasting apparatus of Claim 1, wherein the
content storing means includes: first storing means for storing the sets of video data
included in the plurality of contents; second storing means for storing the sets of control
information included in the plurality of contents; and construction table storing means for storing a
construction table showing correspondence between the sets
of video data stored in the first storing means and the sets
of control information stored in the second storing means.
Claim 3
Dependent Claim
121 words
The broadcasting apparatus of Claim 2, wherein the
transmitting means includes: multiplexing means for reading the plurality of sets
of video data stored in the first storing means and the
plurality of sets of control information stored in the
second storing means as respective digital data streams, and
multiplexing the digital data streams to generate a
multiplexed stream; multiplexing control means for referring to the
construction table and controlling the multiplexing means to
multiplex the plurality of sets of video data and to
repeatedly multiplex a set of control information
corresponding to a set of video data; and broadcasting means for placing the multiplexed stream
generated by the multiplexing means onto a digital broadcast
wave and broadcasting the digital broadcast wave.
Claim 4
Dependent Claim
85 words
The broadcasting apparatus of Claim 3, wherein the
content storing means further includes: third storing means for storing sets of audio data
that correspond to the sets of video data, wherein the construction table storing means stores
correspondence between a set of video data, a set of audio
data, and a set of control information included in each of
the plurality of contents, and wherein the multiplexing means also multiplexes
the sets of audio data stored in the third storing means
into the multiplexed stream.
Claim 5
Dependent Claim
102 words
The broadcasting apparatus of Claim 3, wherein each content includes a plurality of sets of
control information, each set of control information
including a set of link information showing contents that
are link destinations and a set of time information
indicating a valid period for the present control
information within the reproduction period of the set of
video data corresponding to the present set of control
information, and wherein the multiplexing control means controls
the multiplexing means to repeatedly multiplex each set of
control information with the corresponding set of video data
during the valid period of the set of control information.
Claim 6
Dependent Claim
61 words
The broadcasting apparatus of Claim 5, wherein the multiplexing control means controls the
multiplexing means to repeatedly multiplex each set of
control information with the corresponding video data
starting from a predetermined time before the valid period
of the set of control information, the predetermined time
being sufficiently long to enable a reception apparatus to
process a set of control information.
Claim 7
Dependent Claim
35 words
The broadcasting apparatus of Claim 5, wherein the
multiplexing control means appends a version number,
reflecting the valid period of each set of control
information, to each set of control information in a given
content.
Claim 8
Dependent Claim
136 words
The broadcasting apparatus of Claim 3, wherein each content includes a plurality of sets of
control information, wherein the construction table storing means includes
a valid period table indicating a valid period for a set of
control information within the reproduction period of the
corresponding set of video data, for each of the plurality
of sets of control information included in a given content, wherein the multiplexing control means controls the
multiplexing means to repeatedly multiplex a given set of
control information with the corresponding set of video data
during the valid period of the given set of control
information, based on the valid period table, and wherein the multiplexing control means appends a
version number, reflecting the valid period of each set of
control information, to each set of control information in a
given content.
Claim 9
Dependent Claim
39 words
The broadcasting apparatus of Claim 3, wherein at least
one set of control information includes a set of additional
information representing one of text and a graphic image
that is to be displayed superimposed onto the corresponding
video data.
Claim 10
Dependent Claim
40 words
The broadcasting apparatus of Claim 3, wherein each set
of control information stored by the second storing means
includes a set of link information showing contents that are
link destinations and supplementary images representing menu
items for each link destination.
Claim 11
Dependent Claim
66 words
The broadcasting apparatus of Claim 10, wherein at least one set of control information
includes: a plurality of sets of additional information
representing one of text and a graphic image that is to be
displayed superimposed onto the corresponding video data;
and a set of script information that validates one of the
sets of additional information within a reception apparatus,
in accordance with a user operation.
Claim 12
Dependent Claim
88 words
The broadcasting apparatus of Claim 10, wherein at least one set of control information
includes: at least two groups of a set of link information and
supplementary images; a set of initial information showing a group of a set
of link information and supplementary images that is valid
at a start of reproduction by a reception apparatus for a
content including the present set of control information;
and a set of script information that changes a valid
setting in the reception apparatus in accordance with a user
operation.
Claim 13
Dependent Claim
44 words
The broadcasting apparatus of Claim 12, wherein each
group of a set of link information and supplementary image
further includes a set of additional information
representing one of text and a graphic image that is to be
displayed superimposed onto the corresponding video data.
Claim 14
Dependent Claim
267 words
A broadcasting apparatus for broadcasting an interactive
program composed of a plurality of contents that are linked
to one another, the broadcasting apparatus comprising: first storing means for storing a plurality of sets of
video data that each have an identifier, each set of video
data being an element of a content that composes an
interactive program; second storing means for storing a plurality of sets
of control information that each have an identifier, each
set of control information being another element of a
content that composes an interactive program and each set of
control information including a set of link information that
shows an identifier of a set of control information for a
content that is a link destination; construction table storing means for storing a
construction table showing correspondence between the sets
of video data stored in the first storing means and the sets
of control information stored in the second storing means; multiplexing means for reading the plurality of sets
of video data stored in the first storing means and the
plurality of sets of control information stored in the
second storing means as respective digital data streams, and
for multiplexing the digital data streams to generate a
multiplexed stream; multiplexing control means for referring to the
construction table and controlling the multiplexing means to
multiplex the plurality of sets of video data and to
repeatedly multiplex a set of control information
corresponding to an arbitrary set of video data; and broadcasting means for placing the multiplexed stream
generated by the multiplexing means onto a digital broadcast
wave and broadcasting the digital broadcast wave.
Claim 15
Dependent Claim
142 words
The broadcasting apparatus of Claim 14, wherein the
multiplexing control means includes: first determining means for determining a multiplexing
start position in the multiplexed stream for each set of
video data in each content given in the construction table;
and second determining means for determining a plurality
of multiplexing start positions in the multiplexed stream
for each set of control information included in each content
given in the construction table, wherein the multiplexing
start positions for a given set of control information are
determined so that the given set of control information is
multiplexed a plurality of times; wherein the multiplexing means reads the sets of video
data from the first storing means and the sets of control
information from the second storing means in accordance with
the multiplexing start positions determined by the first
determining means and the second determining means.
Claim 16
Dependent Claim
91 words
The broadcasting apparatus of Claim 15, wherein each set of control information stored in the
second storing means includes a set of link information
showing contents that are link destinations and a set of
time information showing a valid period of the set of
control information to which the time information belongs,
and wherein the second determining means determines the
plurality of multiplexing start positions for each set of
control information so that each set of control information
is repeatedly multiplexed during the valid period of the set
of control information.
Claim 17
Dependent Claim
90 words
The broadcasting apparatus of Claim 16, wherein the
multiplexing control means further includes: version appending means for appending a different
version number to each of the plurality of sets of control
information included in a same content, the version numbers
being assigned in accordance with the valid period given in
the set of time information included in each set of control
information, wherein the multiplexing means multiplexes the sets of
control information with the appended version numbers in
accordance with the multiplexing start positions determined
by the second determining means.
Claim 18
Dependent Claim
63 words
The broadcasting apparatus of Claim 16, wherein the
second determining means determines the multiplexing start
positions so that each set of control information is
multiplexed with the corresponding video data starting from
a predetermined time before the valid period of the set of
control information, the predetermined time being
sufficiently long to enable a reception apparatus to process
a set of control information.
Claim 19
Dependent Claim
183 words
The broadcasting apparatus of Claim 15, wherein the
multiplexing control means further includes: system information storing means for storing system
information for specifying a multiplexed stream on a digital
broadcast wave, wherein the system information includes a
stream ID for each set of video data and a stream ID for
each set of control information; identification information appending means for
converting an identifier of a set of video data and an
identifier of a set of control information respectively into
first identification information and second identification
information, based on the system information, for appending
the first identification information to the set of video
data, and for appending the second identification
information to the set of control information; and link destination information converting means for
converting the link information in each set of control
information into the first identification information and
second identification information for the set of video data
and set of control information of each content that is a
link destination, wherein the multiplexing means generates the
multiplexed stream using the system information, the first
identification information, and the second identification
information.
Claim 20
Dependent Claim
63 words
The broadcasting apparatus of Claim 19, wherein the
first identification information is expressed as a unique
stream ID for each set of video data and the second
identification information is expressed as a combination of
a stream ID that is common to all sets of control
information in a content and a unique parameter for each set
of control information in the content.
Claim 21
Dependent Claim
102 words
The broadcasting apparatus of Claim 20, wherein each content includes a plurality of sets of
control information, each set of control information
including a set of link information showing contents that
are link destinations and a set of time information
indicating a valid period for the present control
information within the reproduction period of the set of
video data corresponding to the present set of control
information, and wherein the multiplexing control means controls
the multiplexing means to repeatedly multiplex each set of
control information with the corresponding set of video data
during the valid period of the set of control information.
Claim 22
Dependent Claim
136 words
The broadcasting apparatus of Claim 20, wherein each content includes a plurality of sets of
control information, wherein the construction table storing means includes
a valid period table indicating a valid period for a set of
control information within the reproduction period of the
corresponding set of video data, for each of the plurality
of sets of control information included in a given content, wherein the multiplexing control means controls the
multiplexing means to repeatedly multiplex a given set of
control information with the corresponding set of video data
during the valid period of the given set of control
information, based on the valid period table, and wherein the multiplexing control means appends a
version number, reflecting the valid period of each set of
control information, to each set of control information in a
given content.
Claim 23
Dependent Claim
61 words
The broadcasting apparatus of Claim 21, wherein the multiplexing control means controls the
multiplexing means to repeatedly multiplex each set of
control information with the corresponding video data
starting from a predetermined time before the valid period
of the set of control information, the predetermined time
being sufficiently long to enable a reception apparatus to
process a set of control information.
Claim 24
Dependent Claim
35 words
The broadcasting apparatus of Claim 21, wherein the multiplexing control means appends a
version number, reflecting the valid period of each set of
control information, to each set of control information in a
given content.
Claim 25
Dependent Claim
40 words
The broadcasting apparatus of Claim 19, wherein each set
of control information stored by the second storing means
includes a set of link information showing contents that are
link destinations and supplementary images representing menu
items for each link destination.
Claim 26
Dependent Claim
103 words
The broadcasting apparatus of Claim 15, wherein the
multiplexing control means further includes: a bandwidth assigning table that shows a bandwidth for
each content, the bandwidth being for the digital data
stream of the sets of control information in a content that
are repeatedly transmitted and being a bandwidth that is
part of a total bandwidth of the multiplexed stream, wherein the second determining means determines the
multiplexing start positions of sets of control information
in accordance with the bandwidths given in the bandwidth
assigning table, and wherein the multiplexing means multiplexes the digital
data streams in accordance with the bandwidth assigning
table.
Claim 27
Dependent Claim
82 words
The digital broadcasting apparatus of Claim 14, further
comprising: third storing means for storing a plurality of sets of
audio data that each have an identifier, each set of audio
data being an element of a content that composes an
interactive program, wherein the construction table shows a correspondence
between a set of video data, a set of audio data and sets of
control information in each content, and wherein the multiplexing means additionally
multiplexes the audio data into the multiplexed stream.
Claim 28
Dependent Claim
260 words
A broadcasting apparatus for broadcasting an interactive
program composed of a plurality of contents that are linked
to one another, the broadcasting apparatus comprising: image storing means storing a plurality of sets of
video data and a plurality of sets of still image data; control information storing means for storing sets of
type 1 control information and sets of type 2 control
information, the sets of type 1 control information being
elements of contents including video images, the sets of
type 2 control information being elements of contents
including still images, and the sets of type 1 control
information and sets of type 2 control information including
sets of link information that indicate contents which are
link destinations for a present content; construction table storing means storing a first
construction table showing correspondence between sets of
video data and sets of type 1 control information and a
second construction table showing correspondence between
sets of still image data and sets of type 2 control
information; first multiplexing means for generating a first
multiplexed stream by multiplexing a set of video data in
the first construction table and repeatedly multiplexing a
set of type 1 control information corresponding to the set
of video data; second multiplexing means for generating a second
multiplexed stream by repeatedly multiplexing a plurality of
sets of still image data in the second construction table
with a set of type 2 control information; and broadcasting means for placing the multiplexed stream
generated by the multiplexing means onto a digital broadcast
wave and broadcasting the digital broadcast wave.
Claim 29
Dependent Claim
160 words
A reception apparatus for receiving a broadcast wave
including an interactive program composed of a plurality of
contents that are linked to one another, wherein the
broadcast wave includes a multiplexed stream into which
different sets of video data have been multiplexed with a
plurality of sets of control information showing a link to
another content, the sets of control information being
repeatedly multiplexed, the reception apparatus comprising: extracting means for extracting a set of video data
and a set of control information in a same content as the
set of video data; storing means for storing the extracted set of control
information; reproducing means for reproducing the extracted set of
video data and outputting an image signal; operation means for receiving a user operation that
indicates a content switching; and control means for controlling the extracting means to
extract another content indicated by the set of control
information stored in the storing means, in accordance with
the user operation.
Claim 30
Dependent Claim
73 words
The reception apparatus of Claim 29, wherein the sets of control information each include
valid period information showing a valid period for the set
of control information, wherein each content has to a plurality of sets of
control information which have different valid periods, and wherein the reproducing means reproduces supplementary
images in the set of control information stored in the
storing means during the valid period of the set of control
information.
Claim 31
Dependent Claim
73 words
The reception apparatus of Claim 29, wherein each content corresponds to a plurality of
sets of control information which have different valid
periods, wherein each set of control information has a version
number which reflects the valid period, and wherein the control means controls the extracting
means to extract a set of control information which has a
next version number, when one set of control information has
been extracted by the extracting means.
Claim 32
Dependent Claim
180 words
The reception apparatus of Claim 29, wherein first identification information is appended
to each set of video data and second identification
information is appended to each set of control information,
and wherein the sets of control information include first
identification information and second identification
information which express a content of a link destination, wherein the extracting means includes: first judging means for judging the first
identification information appended to sets of video data in
the broadcast wave; second judging means for judging the second
identification information appended to sets of control
information in the broadcast wave; obtaining means for obtaining a set of video data and
when the first judging means judges that the first
identification information coincides with specified
identification information indicated by the control means
and obtaining a set of control information when the second
judging means judges that the second identification
information coincides with specified identification
information, wherein the reproducing means reproduces the set of
video data obtained by the obtaining means, and the storing
means stores the set of control information obtained by the
obtaining means.
Claim 33
Dependent Claim
144 words
The reception apparatus of Claim 32, wherein a set of entry information giving first
identification information and second identification
information for the content to be reproduced first is
multiplexed into the multiplexed stream, wherein the control means sends an indication to the
extracting means to extract the set of entry information
when the operation means has received a selection operation
for a multiplexed stream from a user, wherein the extracting means further includes: entry information extracting means for receiving the
indication from the control means and extracting the set of
entry information from the multiplexed stream; and entry information storing means for storing the set of
entry information extracted by the entry information
extracting means, wherein the control means gives the obtaining means an
indication of the first identification information and
second identification information included in the entry
information as the specified identification information.
Claim 34
Dependent Claim
174 words
The reception apparatus of Claim 32, wherein the link information includes an identifier of
a set of video data and an identifier of a set of control
information which show a content of a link destination, wherein the first identification information and
second identification information are IDs (identifiers) of
digital data streams which represent a set of video data and
a set of control information in the multiplexed stream, wherein a correspondence table, showing correspondence
between the identifiers for sets of video data and the first
identification information and correspondence between the
identifiers for sets of control information and the second
identification information, is multiplexed into the
multiplexed stream and repeatedly transmitted, and wherein the extracting means extracts the
correspondence table and the control means refers to the
correspondence table, converts an identifier of the set of
video data included in the link information into first
identification information and an identifier of the set of
control information into second identification information
and informs the extracting means of the converted first and
second identification information.
Claim 35
Dependent Claim
124 words
The reception apparatus of Claim 32, wherein at least one set of control information
includes link information showing a content of a link
destination and supplementary images that include a menu
item image for each link destination, wherein the reproducing means includes: video data reproducing means for reproducing the set
of video data obtained by the obtaining means; and image reproducing means for reproducing supplementary
images stored by the storing means superimposed onto the
video data, wherein the operation means receives a user selection
of a menu item image, and wherein the control means determines the first
identification information and the second identification
information of a link destination content in accordance with
the link information and the menu item image selected by the
user.
Claim 36
Dependent Claim
53 words
The reception apparatus of Claim 35, wherein at least one set of control information
includes additional information which expresses one of a
text image and a graphics image, and wherein the reproducing
means additionally reproduces one of the text image and
graphics image stored in the storing means superimposed onto
the video data.
Claim 37
Dependent Claim
82 words
The reception apparatus of Claim 36, wherein one content has a plurality of sets of control
information which each have a different valid period, wherein each set of control information in a same
content has a version number which reflects a valid period
of the set of control information, and wherein when the extracting means has extracted a set
of control information, the control means controls the
extracting means to extract a set of control information
that has a next version number.
Claim 38
Dependent Claim
71 words
The reception apparatus of Claim 36, wherein each set of control information includes valid
period information showing a valid period of the set of
control information, wherein each content has a plurality of sets of
control information which have different valid periods, and wherein the reproducing means reproduces
supplementary images stored in the storing means only during
a valid period of the set of control information stored in
the storing means.
Claim 39
Dependent Claim
64 words
The reception apparatus of Claim 38, wherein each of the plurality of sets of control
information for a same content has a version number that
reflects the valid period, and wherein the control means
controls the extracting means to extract a set of control
information which has a next version number, when one set of
control information has been extracted by the extracting
means.
Claim 40
Dependent Claim
125 words
The reception apparatus of Claim 36, wherein at least one set of control information
includes a plurality of sets of additional information which
each express one of a text image and a graphics image to be
displayed superimposed onto the video data, and a set of
script information that validates one of the sets of
additional information within a reception apparatus, in
accordance with a user operation, wherein the control means determines a valid set of
additional information by interpreting and executing the
script information stored in the storing means, and wherein the reproducing means reproduces one of the
text image and the graphics image included in the valid set
of additional information based on a result of interpreting
and executing by the control means.
Claim 41
Dependent Claim
131 words
The reception apparatus of Claim 36, wherein at least one set of control information
includes: at least two groups that each include a set of
link information and a supplementary image; a set of initial
information showing a valid group at a start of reproduction
by the reception apparatus of a content to which the set of
control information belongs; and a set of script information
which changes a setting of a valid group in the reception
apparatus in accordance with a user operation, wherein the control means determines a valid group by
interpreting and executing the initial information and
script information stored in the storing means, wherein the reproducing means reproduces the
supplementary images in the valid group in accordance with
an interpreting and executing result of the control means.
Claim 42
Dependent Claim
56 words
The reception apparatus of Claim 29, wherein the multiplexed stream includes sets of audio
data corresponding to the sets of video data, wherein the extracting means extracts a set of audio
data corresponding to a set of video data from the broadcast
wave, and wherein the reproducing means additionally
reproduces the extracted set of audio data.
Claim 43
Dependent Claim
333 words
A reception apparatus for receiving a broadcast wave
including an interactive program composed of a plurality of
contents that are linked to one another, wherein the broadcast wave includes a multiplexed
stream into which different sets of video data have been
multiplexed with a plurality of sets of control information
showing a link to another content, the sets of control
information being repeatedly multiplexed, wherein first identification information is appended
to each set of video data and second identification
information is appended to each set of control information, wherein the sets of control information include first
identification information and second identification
information which express a content of a link destination, the reception apparatus comprising: extracting means for extracting a set of video data
and a set of control information in a same content as the
set of video data; storing means for storing the extracted set of control
information; reproducing means for reproducing the extracted set of
video data and outputting an image signal; operation means for receiving a user operation that
indicates a content switching; and control means for controlling the extracting means to
extract another content indicated by the set of control
information stored in the storing means, in accordance with
the user operation, the extracting means including: first judging means for judging the first
identification information appended to sets of video data in
the broadcast wave; second judging means for judging the second
identification information appended to sets of control
information in the broadcast wave; and obtaining means for obtaining a set of video data and
when the first judging means judges that the first
identification information coincides with specified
identification information indicated by the control means
and obtaining a set of control information when the second
judging means judges that the second identification
information coincides with specified identification
information, wherein the reproducing means reproduces the set of
video data obtained by the obtaining means, and the storing
means stores the set of control information obtained by the
obtaining means.
Claim 44
Dependent Claim
134 words
The reception apparatus of Claim 43, wherein the link information includes an identifier of
a set of video data and an identifier of a set of control
information which show a content of a link destination, wherein the second identification information is an
identifier for a set of control information, wherein a correspondence table, showing correspondence
between the identifiers for sets of video data and the first
identification information and correspondence between the
identifiers for sets of control information and the second
identification information, is multiplexed into the
multiplexed stream and transmitted, wherein the extracting means extracts the
correspondence table, and wherein the control means refers to the extracted
correspondence table, converts the identifier of the set of
video data included in the link information into first
identification information, and informs the extracting
means.
Claim 45
Dependent Claim
25 words
The reception apparatus of Claim 44, wherein the first
identification information includes a packet identifier in
accordance with MPEG2 (Moving Pictures Experts Group 2)
standard.
Claim 46
Dependent Claim
31 words
The reception apparatus of Claim 44, wherein the first
identification information is a combination of a packet
identifier in accordance with MPEG2 (Moving Pictures Experts
Group 2) standard and another parameter.
Claim 47
Dependent Claim
315 words
A reception apparatus in a broadcasting system for
achieving interactiveness using a broadcast wave, wherein the broadcast wave includes a first
multiplexed stream which represents a plurality of stream-based
contents that each include a set of video data and a
set of type 1 control information, and a second multiplexed
stream which represents a plurality of page-based contents
that each include a set of still image data and a set of
type 2 control information, the first multiplexed stream having the sets of type 1
control information that show a link to another content
repeatedly multiplexed with the corresponding sets of video
data, the second multiplexed stream having a plurality of
sets of still image data and a plurality of sets of type 2
control information repeatedly multiplexed, the reception apparatus comprising: extracting means for extracting one of a set of video
data and a set of still image data, and one of a set of type
1 control information and a set of type 2 control
information in a same content from the broadcast wave; storing means for storing an extracted set of one of
type 1 control information and type 2 control information; judging means for judging whether a content extracted
by the extracting means is one of a stream-based content and
a page-based content; reproducing means for reproducing, when the judging
means judges that the judging means is a stream-based
content, the extracted set of video data and outputting an
image signal, and for reproducing, when the judging means
judges that the judging means is a page-based content, the
extracted set of still image data and outputting an image
signal; operation means for receiving a user operation that
indicates a content switching; and control means for controlling the extracting means to
extract another content indicated by the set of control
information stored in the storing means, in accordance with
the user operation.
Claim 48
Dependent Claim
200 words
A broadcasting system which includes a broadcasting
apparatus and a reception apparatus and which achieves
interactiveness using a brbadcast wave, the broadcasting apparatus comprising: content storing means for storing the plurality of
contents, each content including a set of video data and a
set of control information that indicates another content
that is a link destination for a present content; and transmitting means for multiplexing a set of video
data and a plurality of sets of the same control information
included in a same content as the set of video data, and for
transmitting the multiplexed sets of video data and control
information, and the reception apparatus comprising: extracting means for extracting a set of video data
and a set of control information in a same content as the
set of video data; storing means for storing the extracted set of control
information; reproducing means for reproducing the extracted set of
video data and outputting an image signal; operation means for receiving a user operation that
indicates a content switching; and control means for controlling the extracting means to
extract another content indicated by the set of control
information stored in the storing means, in accordance with
the user operation.
Claim 49
Dependent Claim
196 words
A recording medium used by a reception apparatus that
includes a receiving unit for receiving a broadcast wave
including an interactive program composed of a plurality of
contents that are linked to one another, an extracting unit
for extracting one digital data stream from the broadcast
wave, and a reproducing unit for reproducing a set of video
data and outputting an image signal, the recording medium
storing a program that includes the following steps: an extracting step for extracting a set of video data
and a set of control information in a same content as the
set of video data from the broadcast wave; a storing step for storing the extracted set of
control information into a memory in the reception
apparatus; a reproducing step for reproducing the extracted set
of video data and outputting an image signal; a judging step for judging whether a user operation
indicating a switching of content has been made; and a control step for controlling the extracting unit to
extract another content indicated by the set of control
information stored in the memory, when the judging step
judges that a user operation indicating a switching of
content has been made.
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