Terminal for digital network and method of controlling the same
First Claim
1. A terminal for a digital network comprising:
- display means for displaying on a display screen an image and first and second marks respectively designating independent first and second positions on the image;
input means for inputting first position data representing the first position of said first mark on the display screen of said display means;
first image data generating means for generating first image data for displaying said first mark on the display screen of said display means based only on the first position data inputted via said input means;
receiving means for receiving through the digital network image data of one frame and second position data representing the second position of said second mark on the display screen of said display means;
second image data generating means for generating second image data for displaying said second mark on the display screen of said display means based only on the second position data received by said receiving means; and
image data synthesizing means for synthesizing said image data of one frame received by said receiving means, said first image data generated by said first image data generating means, and said second image data generated by said second image data generating means and for displaying an image obtained by the synthesis as a composite image on said display means.
3 Assignments
0 Petitions
Accused Products
Abstract
The position of a first pointer displayed on a display screen of a monitor display device is designated by a mouse. Data representing the position of a second pointer transmitted through an integrated digital service network 40 is received, and the position thereof is detected. In order to display the first and second pointers on the monitor display device, luminance data and chrominance data representing images of the pointers are generated by a character generator. The above data and image data stored in an image memory are synthesized in an image synthesizing circuit and an image obtained by the synthesis is applied to the monitor display device, so that the first and second pointers are displayed on the display screen of the monitor display device. Consequently, the first pointer designated by an operator of a terminal on the image data receiving side and the second pointer designated by an operator of a terminal on the image data transmission side are simultaneously displayed on the monitor display device.
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Citations
10 Claims
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1. A terminal for a digital network comprising:
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display means for displaying on a display screen an image and first and second marks respectively designating independent first and second positions on the image; input means for inputting first position data representing the first position of said first mark on the display screen of said display means; first image data generating means for generating first image data for displaying said first mark on the display screen of said display means based only on the first position data inputted via said input means; receiving means for receiving through the digital network image data of one frame and second position data representing the second position of said second mark on the display screen of said display means; second image data generating means for generating second image data for displaying said second mark on the display screen of said display means based only on the second position data received by said receiving means; and image data synthesizing means for synthesizing said image data of one frame received by said receiving means, said first image data generated by said first image data generating means, and said second image data generated by said second image data generating means and for displaying an image obtained by the synthesis as a composite image on said display means. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of controlling a terminal of a digital network, the terminal having display means for displaying on a display screen an image and first and second marks respectively designating independent first and second positions on the image, the method comprising the steps of:
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receiving first position data, inputted via operator input means of the terminal, which represents the first position of said first mark on the display screen of said display means; generating first image data for displaying said first mark on the display screen of said display means based only on the first position data inputted via the operator input means; receiving through the digital network image data of one frame and second position data representing the second position of said second mark on the display screen of said display means; generating second image data for displaying said second mark on the display screen of said display means based only on the second position data received through the digital network; and synthesizing said image data of one frame, said first image data for displaying said first mark, and said second image data for displaying said second mark and for displaying an image obtained by the synthesis as a composite image on said display means. - View Dependent Claims (8, 9, 10)
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Specification