CATV system
First Claim
1. A CATV (cable television) system comprising:
- a text-system host computer for outputting text data and having a disclosed protocol;
an image-data-system host computer for outputting image data and having an undisclosed protocol;
an image-data-system terminal connected to said image-data-system host computer, for displaying an image in response to said image data outputted from said image-data-system host computer;
a video control unit connected to said image-data-system terminal, for acquiring said image data from said image-data-system terminal to process said acquired image data;
a data management unit including means for acquiring said text data from said text-system host computer according to said disclosed protocol, said data management unit (a) acquiring the processed image data from said video control unit, (b) decrypting said text data and (c) outputting said text data and said processed image data;
a signal transmitting unit connected to said data management unit, for transmitting said processed image data and said text data received from said data management unit;
a cable for transmitting said processed image data and said text data outputted from said signal transmitting unit; and
a display unit connected via said cable to said signal transmitting unit, for displaying an image thereon in response to said processed image data and said text data both of which are acquired from said signal transmitting unit via said cable.
2 Assignments
0 Petitions
Accused Products
Abstract
An image-data-system host computer outputs image data, the protocol of which is not disclosed. The image data outputted from the image-data-system host computer is transmitted via an image-data-system terminal and a video control unit to a data management unit. On the other hand, the data management unit decrypts in accordance with a protocol and acquires text data outputted from a text-system host computer whose protocol is disclosed. A signal transmitting unit transmits the image data and the text data outputted from the data management unit via a coaxial cable to a display unit. The display unit displays images in response to the image data and the text data received from the signal transmitting unit.
13 Citations
7 Claims
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1. A CATV (cable television) system comprising:
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a text-system host computer for outputting text data and having a disclosed protocol; an image-data-system host computer for outputting image data and having an undisclosed protocol; an image-data-system terminal connected to said image-data-system host computer, for displaying an image in response to said image data outputted from said image-data-system host computer; a video control unit connected to said image-data-system terminal, for acquiring said image data from said image-data-system terminal to process said acquired image data; a data management unit including means for acquiring said text data from said text-system host computer according to said disclosed protocol, said data management unit (a) acquiring the processed image data from said video control unit, (b) decrypting said text data and (c) outputting said text data and said processed image data; a signal transmitting unit connected to said data management unit, for transmitting said processed image data and said text data received from said data management unit; a cable for transmitting said processed image data and said text data outputted from said signal transmitting unit; and a display unit connected via said cable to said signal transmitting unit, for displaying an image thereon in response to said processed image data and said text data both of which are acquired from said signal transmitting unit via said cable. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification