Video transmission apparatus for video teleconference terminal
First Claim
1. A video apparatus for video teleconference terminals, comprising:
- at least two video signal generating means for generating video signals, each video signal generating means having an aspect ratio associated therewith;
selecting means for selecting one of the at least two video signal generating means;
means for detecting which video signal generating means is selected by the selecting means;
display control signal generating means for generating a display control signal which indicates the aspect ratio associated with the selected video signal generating means, in response to detection by the means for detecting of which video signal generating means is selected by the selecting means;
transmitting means for transmitting the video signal of the selected video signal generating means and the display control signal over a communication line;
receiving means for receiving a video signal and a display control signal associated therewith which indicates the aspect ratio for displaying the received video signal, the received video signal being received from the communication line from a source external to said video apparatus; and
video display means for displaying one of the video signal received by the receiving means with the aspect ratio specified by the display control signal received by the receiving means and the video signal transmitted by the transmitting means with the aspect ratio of the selected video signal generating means.
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Accused Products
Abstract
A video transmission apparatus for a video teleconference terminal for displaying video signals with a proper aspect ratio in a video teleconference terminal which transmits and receives video signals representing pictures of different aspect ratios. The video transmitter determines, from among the video signals generated by the cameras having different aspect ratios, which signal should be transmitted to the receiving terminal by a key operation on the operation pad. The result of selection by the operation pad is sent via a video controller to a transmission video signal selector, which selects one of the outputs from the cameras according to the result. The video signal from the selected camera is output to a video signal transmitter as a transmission video signal. A CPU of the video controller recognizes the selecting operation on the operation pad and, accordingly, generates a display control signal which indicates an aspect ratio corresponding to the camera thus selected. The display control signal generated is output to the video signal transmitter via a transmission display control interface. The video signal transmitter multiplexes the display control signal and the transmission video signal and sends the resultant signal over a communication network.
84 Citations
19 Claims
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1. A video apparatus for video teleconference terminals, comprising:
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at least two video signal generating means for generating video signals, each video signal generating means having an aspect ratio associated therewith; selecting means for selecting one of the at least two video signal generating means; means for detecting which video signal generating means is selected by the selecting means; display control signal generating means for generating a display control signal which indicates the aspect ratio associated with the selected video signal generating means, in response to detection by the means for detecting of which video signal generating means is selected by the selecting means; transmitting means for transmitting the video signal of the selected video signal generating means and the display control signal over a communication line; receiving means for receiving a video signal and a display control signal associated therewith which indicates the aspect ratio for displaying the received video signal, the received video signal being received from the communication line from a source external to said video apparatus; and video display means for displaying one of the video signal received by the receiving means with the aspect ratio specified by the display control signal received by the receiving means and the video signal transmitted by the transmitting means with the aspect ratio of the selected video signal generating means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A video signal apparatus for video teleconference terminals, comprising:
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a plurality of video signal generating means, each generating a video signal representing a picture of a different aspect ratio; video signal selection means for selecting one of the plurality of video signal generating means; means for detecting which video signal generating means is selected by the video signal selection means; display control signal generating means for generating a display control signal which indicates the aspect ratio of the video signal selected by the video signal selection means, in response to the means for detecting which video signal generating means is selected by the video signal selection means; transmitting means for transmitting the video signal and the display control signal being related to each other, over a communication line; receiving means for receiving a video signal and a display control signal associated therewith which indicates the aspect ratio for displaying the received video signal, the received video signal being received from the communication line from a source external to said video signal apparatus; and video display means for displaying the video signal received by the receiving means with the aspect ratio specified by the display control signal received by the receiving means. - View Dependent Claims (13, 14)
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15. A video apparatus for video teleconference terminals, comprising:
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at least one video signal generating means for generating a video signal, the at least one video signal generating means having an aspect ratio associated therewith; external video signal input means which receives an external video signal including an aspect ratio identification signal, extracts the aspect ratio identification signal from the external video signal and outputs the external video signal and the aspect ratio identification signal which have been extracted; video signal selection means for selecting one of the external video signal input means and one of the at least one video signal generating means; means for detecting which of the external video signal input means and the one of the at least one video signal generating means is selected by the video signal selection means; display control signal generating means which, when a video signal selected by the video signal selection means is that from one of the at least one video signal generating means, generates a display control signal which indicates the aspect ratio associated with the selected video signal generating means, and, when a video signal selected by the video signal selection means is that from the external video signal input means, generates the display control signal which indicates the aspect ratio corresponding to the aspect ratio identification signal extracted from the external video signal, wherein the display control signal is generated in response to the means for detecting which of the external video signal input means and the one of the at least one video signal generating means is selected by the video signal selection means; transmitting means for transmitting the video signal selected by the video signal selection means and the display control signal generated by the display control signal generating means, being related to each other, over a communication line; receiving means for receiving a video signal and a display control signal associated therewith which indicates the aspect ratio for displaying the received video signal, the received video signal being received from the communication line from a source external to said video apparatus; and video display means for displaying the video signal received by the receiving means with the aspect ratio specified by the display control signal received by the receiving means. - View Dependent Claims (16)
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17. A video transmission and receiving apparatus comprising:
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a video signal generator, which generates a first video signal; means for detecting a focal length at which the video signal generator is operating; a display control signal generator, for generating a display control signal which indicates an aspect ratio at which the first video signal is to be displayed, wherein the display control signal generator generates a first display control signal in response to the means for detecting the video signal generator operating in a first range of focal length, and a second display control signal different from the first display control signal in response to the means for detecting the video signal generator operating in a second range of focal length; a video signal transmitter and receiver which transmits the first video signal and the display control signal associated therewith and receives a second video signal having a display control signal associated therewith from a source external to said video transmission and receiving apparatus; and a video display that displays one of the first video signal at the aspect ratio indicated by the display control signal associated therewith, and the second video signal at an aspect ratio indicated by the display control signal associated with the second video signal. - View Dependent Claims (18, 19)
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Specification