Television – Image signal processing circuitry specific to television – Special effects
Reexamination Certificate
1999-10-28
2002-06-04
Hsia, Sherrie (Department: 2614)
Television
Image signal processing circuitry specific to television
Special effects
C348S588000, C348S723000, C348S725000
Reexamination Certificate
active
06400414
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a transmitter, a receiver, a transmitter-receiver, a transmitting method, a receiving method and a transmitting/receiving method, and more particularly, is suitably applied to a transmitter, a receiver, a transmitter-receiver, a transmitting method, a receiving method and a transmitting/receiving method that transmit/receive moving image data of a plurality of channels via prescribed transmission lines.
2. Description of the Related Art
As such a transmitter-receiver, for instance, there is one that has a configuration as shown in FIG.
1
.
A transmitter-receiver
1
configured like that performs prescribed encoding processing and multiplex processing or the like on moving image signals S
1
to S
4
and D
5
to D
8
in analog waveform or in digital waveform, for a plurality of channels, that are supplied from an external device, in the encoding part
4
of a transmitter
2
, and transmits obtained multiplexed data D
17
to the receiving part
6
of a receiver
3
via a transmitting part
5
.
The receiving part
6
outputs the multiplexed data D
17
to be given to a decoding part
7
. In the decoding part
7
, prescribed separating and decoding processing or the like are performed on the multiplexed data D
17
. And obtained moving image reproducing signals S
5
to S
8
or moving image reproducing data D
18
to D
21
for a plurality of channels are outputted to an external device. ;
Here, in the encoding part
4
of transmitter
2
, as shown in
FIG. 2
, first to fourth moving image data D
1
to D
4
that are obtained by performing digital conversion on the first to fourth moving image signals S
1
to S
4
in analog waveform, to be given from the external device to first to fourth analog input terminals
8
A to
8
D in first to fourth A/D converters
9
A to
9
D, and/or fifth to eighth moving image data D
5
to D
8
to be given from the external device to first to fourth digital input terminals
8
E to
8
H, are supplied to corresponding first to fourth selecting parts
10
A to
10
D.
The first to fourth selecting parts
10
A to
10
D select one out of the respectively supplied first to eighth moving image data D
1
to D
8
, and they each transmit the selected ones to corresponding first to fourth encoders
11
A to
11
D, as first to fourth selected moving image data D
9
to D
12
.
The first to fourth encoders
11
A to
11
D respectively perform prescribed encoding processing on the first to fourth moving image data that respectively form the first to fourth selected moving image data D
9
to D
12
to be supplied. Then, the encoders
11
A to
11
D convert obtained first to fourth coded moving image data into transport stream (TS) packets according to the format defined by a moving picture experts group phase
2
(MPEG
2
) standard, and sequentially transmit first to fourth TS packet stream data D
13
to D
16
that are obtained by sequentially and respectively TS-packetizing the first to fourth coded moving image data to a multiplexer
12
.
The multiplexer
12
multiplexes the first to fourth TS packet stream data D
13
to D
16
to be supplied, and transmits obtained multiplex data D
17
via the transmitting part
5
to the receiving part
6
of the receiver
3
.
On the other hand, as shown in
FIG. 3
, the decoding part
7
of the receiver
3
receives the multiplex data D
17
supplied from the receiving part
6
with a separating part
13
. In the separating part
13
, the first to fourth TS packet stream data D
13
to D
16
that are obtained by performing prescribed separating processing on the multiplex data D
17
are transmitted to corresponding first to fourth decoders
14
A to
14
D.
The first to fourth decoders
14
A to
14
D separate the supplied first to fourth TS packet stream data D
13
to D
16
, according to the format defined by the MPEG
2
standard, and respectively perform prescribed decoding processing on first to fourth coded moving image data obtained by sequentially separating the first to fourth TS packet stream data D
13
to D
16
.
Then, the first to fourth decoders
14
A to
14
D supply thus obtained first to fourth moving image reproducing data D
18
to D
21
that form the first to fourth moving image data composed of different moving images to respectively corresponding first to fourth D/A converters
15
A to
15
D to perform analog conversion, and the resultants are output to the external device as first to fourth moving image reproducing signals S
5
to S
8
in analog waveform via corresponding first to fourth analog output terminals
16
A to
16
D. Or the decoders
14
A to
14
D output to the external device the first to fourth moving image reproducing data D
18
to D
21
as they are via corresponding first to fourth digital output terminals
16
E to
16
H.
However, in the above transmitter-receiver
1
, in the transmitter
2
, the encoders
11
A to
11
D for the number of input channels must be provided in the encoding part
4
to perform prescribed encoding processing, and also the multiplexer
12
must be provided to further multiplex the first to fourth TS packet stream data D
13
to D
16
obtained in the encoders
11
A to
11
D. This causes a problem that the size of the circuit of the encoding part
4
of the transmitter
2
is enlarged and complicated.
Also in the receiver
3
, the separating part
13
is necessary for the decoding part
7
to separate the multiplex data D
17
, and also the decoders
14
A to
14
D for the number of output channels must be provided to further separate the first to fourth TS packet stream data D
13
to D
16
which are obtained in the separating part
13
and to perform prescribed decoding processing on them. This causes a problem that the size of circuit of the decoding part
7
in the receiver
3
is enlarged and complicated.
Above points pose a problem that the size of the circuit of the whole transmitter-receiver
1
composed of these transmitter
2
and receiver
3
is enlarged and complicated.
SUMMARY OF THE INVENTION
In view of the foregoing, an object of the present invention is to provide a transmitter, a receiver, a transmitter-receiver, a transmitting method, a receiving method and a transmitting/receiving method that remarkably reduces and simplifies the circuit scale.
The foregoing object and other objects of the invention have been achieved by the provision of a transmitter which comprises: a resolution conversion processing means for performing prescribed resolution conversion processing on plural first image data to be supplied to reduce the image size in the vertical direction and/or horizontal direction respectively; a synthesized image generating means for generating second image data that is composed of image data for one frame, based on each of the first image data subjected to the resolution conversion processing; an encoding means for performing prescribed encoding processing on the second image data; and a transmitting means for transmitting the second image data subjected to the encoding processing.
Therefore, in this transmitter, only one circuit can cover the whole encoding processing.
Further the present invention provides a receiver which comprises: a receiving means for receiving first image data to be transmitted from a transmitter; a decoding means for performing prescribed decoding processing on the first image data; an image data separating means for separating the first image data subjected to the decoding processing into plural second image data; and a resolution conversion processing means for performing prescribed resolution conversion processing on each of the second image data to magnify the image size in the vertical direction and/or horizontal direction respectively.
Therefore, in this receiver, only one circuit can cover the whole decoding processing.
Furthermore the present invention provides a transmitter-receiver which comprises: a resolution conversion processing means for performing prescribed resolution conversion processing on plural first image data to be supplied, to reduce the
Frommer William S.
Frommer & Lawrence & Haug LLP
Simon Darren M.
Sony Corporation
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