Television – Receiver circuitry
Reexamination Certificate
1998-07-07
2002-04-16
Eisenzopf, Reinhard J. (Department: 2614)
Television
Receiver circuitry
C348S469000, C348S014160, C348S014160, C455S001000, C455S001000, C345S215000
Reexamination Certificate
active
06373534
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a television receiver for receiving the broadcast wave to process the data contained in the broadcast wave and the picture signal for display, and provide the additional information to the viewer, and more particularly to a so-called two-way television receiver which is having the response function.
BACKGROUND OF THE INVENTION
Recently, according to the progress of the semiconductor technique and the communication technique the television receiver having higher function have been developed. Especially, compared with the conventional passive TV to just enjoy viewing the picture or audio signal, the television receiver having the higher function that it adds more than the picture and the audio information by multiplexing the digital data by using the digital technique, or it can response to the TV program becomes to be desired.
As the TV which realize such functions mentioned above, there is a Compact Graphical Interactive Broadcast Information System mentioned on the International Application Published under the patent cooperation treaty (PCT) International Patent Class: H04N1/00, International Publication Number: WO96/3466. This document 1 shows the ways to realize the two-way function by multiplexing not only the normal image data but the new data to the TV program. Further, this document shows the way to realize the two-way function by multiplexing the data on the vertical retrace interval which is called VBI (Vertical Blanking Interval).
FIG. 28
shows the construction of the transmission side and the receiving side mentioned on the document.
An image signal input from an input terminal on the transmission side is supplied to an inserting device
3
by an NTSC encoder
2
. On the other hand, data for giving a new service are input from an input terminal
6
, and the data are encoded in a data encoder
7
, then supplied to the inserting device
3
. To the data encoder
7
a timing signal is supplied from an information update device
8
. The audio signal is omitted to simplify this explanation, however, it is also encoded in the same way as the video signal. In the inserting device
3
one signal is formed by the inserting of the data. The signal is modulated by input in a modulator
4
, then output from an output terminal
5
.
On the other hand, on the receiving side, the signal output from the transmitter is received in an input terminal
20
, then demodulated in a demodulator
21
. The demodulated signal is input to an extractor
22
, where the data are extracted. And, the output signal of the demodulator
21
is decoded by input in an NTSC decoder
23
. The extracted data are taken in a memory
30
via a bus
27
which is connected to a CPU
26
so as to be processed by the software which is driven by the CPU
26
. To the bus
27
an image memory
33
is connected, where the result of the data decoding is displayed as the image. And to the bus
27
a photoreceptor
31
for receiving the output signal of a remote controller
32
, so as to transmit the response of the user and change the processing of the software.
To the bus
27
a transmission and receiving device, so called a modem
29
is connected, where the response of the user is sent back to the server via a terminal
28
. In the modem
29
it is also possible to receive the data from the server by the network.
The output signals from the NTSC decoder
23
and the image memory
33
are synthesized by input to a synthesizing device
24
, then output from an output terminal
25
. Accordingly, the graphical application constructed by the data which are multiplexed with the video signal is synthesized, so that it is possible to receive and display the TV program which sends the complement information or the response of the program back.
Further this DRAWING shows the construction of the server. The signal output from the terminal
28
on the receiving side is input to a terminal
11
, then input to a server
9
via a modem
10
. Here, the server is not only for receiving the signal from the receiving side but for transmitting the data to the receiver. In case of outputting the data from the server
9
, the data are output from the terminal
11
via the modem
10
, then received in the terminal
28
on the receiving side. Accordingly, the data are flowed in two-way between the terminal
11
and the terminal
28
.
FIG. 29A
shows the construction of the screen constructed by the devices mentioned above. On the display screen the graphic image which is made by decoding the data is displayed with the video signal. On the document mentioned above the section where one picture is displayed by forming one picture and decoding the data is referred as the object. Further, the actual image or text which are displayed as the object is referred as the resources, and the document which mentions the operations of the object or form is referred as the script.
Further, the consecutive program which is constructed by these forms is referred as the application.
FIG. 29B
shows the relation of the elements constructing these applications. The whole applications are defined a specific form called the application form. The application form shows the numbers or construction of the whole forms, objects, resources, and scripts which are used for the application. The application form prescribes which form is used next. In each form an object construction one form is defined. In the object the resources and the pointer of the script showing the content of the object are shown. One application is constructed by the constructions mentioned above.
Further, the document mentioned above shows that the transmission is executed by storing each element in the record when these elements are transmitted.
FIG. 30
shows the stratum constructions of the record and the application. The information of the application form defining the whole application is transmitted by an application header record
41
, where the information showing the script and form which is carried out first in the application is stored. The information of the form is stored in a form record
42
, where the numbers showing the object and the resources used for the object and the position information showing the script are contained.
All scripts are collected into one and transmitted by a script record
43
. In case of the resources, the resources are transmitted by resource records
44
and
45
, respectively.
These records are divided into the transmission units called blocks, then these are transmitted after the headers of the blocks are added to them. As mentioned above, the application in the document are constructed by many constructing elements. The graphical elements shown in the picture which construction is set up by the form are shown as the object. In this case, for instance, the operation that the user changes the content of the text by pushing the button is mentioned as the script.
As described above, in the two-way television system shown in the document, one application is divided into several construction elements and transmitted so that the data are easily multiplexed, and the interactive application is realized by the operation of the script. However there arc drawbacks when this system is applied to the digital broadcast receiver:
(A) In the digital broadcast the video signal is decoded by the exact timing. However, the digital broadcast does not have a synchronizing function by decoding the graphical elements of the application and the digital image signal. Accordingly, the timing control style to display by executing the application related with the video signal which is constructing the TV program is not defined exactly. In the conventional embodiment since there is no relationship between the video signal and the data to be multiplexed, the display timings of the video signal and the decoded data are not defined.
Further, in the conventional embodiment, since the operation of the application is decided by the script it is necessary to make the script when the application is made. The conventional embodiment
Fujiyoshi Yasuhiro
Sakazaki Yoshihisa
Shimoda Kenji
Yasuki Seijiro
Eisenzopf Reinhard J.
Intellectual Property
Kabushiki Kaisha Toshiba
Natnael Paulos
Pillsbury & Winthrop LLP
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