JPS62230181A - Electronic conference system - Google Patents

Abstract

PURPOSE:To make divided display and superposed display of data by displaying animation data, still picture data and drawn picture data, and making divided display or superposed display of them selectively. CONSTITUTION:Animation data (PRD) from which a device address (SAD) and a speader switching signal (PID) are removed by a frame identifier (FID) and an identifier detecting section 360 are sent to a moving picture compounding section 370a or 370b and compounding of animation is perfomed. Drawn picture data compounded by a drawn picture compounding section 371a are sent to a drawn picture reproducing processing section 372a, and interpolating processing necessary for graphic display is performed. still picture data compounded by a still picture compounding section 371b are sent to a still picture reproducing processing section 372b, and picture processing necessary for graphic display such as linear density exchange, enlargement, reduction etc. is performed, and sent out to a frame memory section 380. FID,SAD and PID detected by the identifier detecting section 360 are sent to a graphic display section 385, and control display of data of a memory section 380.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an electronic conference system for holding conferences between remote points, and a system for displaying video data, still image data, and drawing data with one device. The present invention relates to an electronic conference system having a graphic display device capable of displaying images.

[Technical background of the invention]

2. Description of the Related Art Electronic conference systems have been known as systems for holding conferences between remote locations.

An example of such an electronic conference system is the one shown in FIG. 3. As shown in the figure, this electronic conference system includes a microphone 1, a speaker 2, a television camera 4 that displays an image of the conference hall, a television monitor 5, a facsimile device 6, a hard copy device 12 consisting of a printer, and a microphone 1. An audio unit 7 that encodes and decodes the audio signal from the speaker 2, an image unit 8 that encodes and decodes the image signal, a control unit 9 that controls the image unit 8, and an operation unit that inputs instructions for the control unit 9. 10, and a transmission unit 11 that transmits and receives audio signals and image signals.

[Problems with background technology]

However, in such a conventional electronic conference system, the television monitor 5 only displays images of the conference room and manuscripts as moving images, and displays still image data and drawing data that conference attendees add to and modify the still image data. cannot be displayed or recorded at the same time, and even when switching video data, operations by a dedicated operator are required, which hinders the smooth progress of the photo session.

[Purpose of the invention]

The present invention has been made to solve these conventional problems, and is capable of selectively displaying video data, still image data, and drawing data in divided light or superimposing them, as well as recording them. The purpose of the present invention is to provide an electronic conference system that does not require troublesome operations when switching.

[Summary of the invention]

In other words, the present invention provides an input system for inputting drawing data, still image data, moving image data, and audio data, an output system for outputting drawing data, still image data, moving image data, and audio data, and a remote point. In an electronic conference system in which a plurality of conference unit systems are connected via a line, consisting of a transmission system that controls the transmission of data, and a control system that controls the input system, output system, and transmission system, control information detection means for detecting control information added to and inputted to image data of image data/video data;
a decoding unit for decoding image data of the drawing data, still image data, and video data; a frame memory unit for storing and combining the decoded image data; and an image to be stored in the frame memory unit. a graphic display device having a graphic display section that displays data; and a display control section that controls the display form of the image data based on control information detected by the control information detection means; By providing a means for recording the image data that has been displayed in the recording means at any time, it is possible to display video data, still image data, and drawing data, and also to selectively display them separately or overlappingly. This makes it possible to record the data, and eliminates the need for troublesome operations when switching data.

[Embodiments of the invention]

Embodiments of the present invention will be described in detail below based on the drawings.

FIG. 1 is a block diagram showing a conference unit system as an embodiment of the electronic conference system of the present invention.

In this embodiment, the control device 900 includes an input device including a drawing system, a still image system, a moving image system, and an audio system;
No. 1 - An output device consisting of a tocoby system and an audio system is connected. Signals from these input devices and signals to output devices are subjected to processing such as selection and multiplexing according to several control information signals, and then transmitted. 8 Input devices include a plurality of drawing input devices 100 for inputting handwritten characters and figures, and a still image input device 200 for inputting documents before or during the meeting. A video input device 300 for inputting images of conference attendees and the background of the conference hall, and an audio input device 4 for inputting audio.
00 is connected.

In addition, as output devices, there are a plurality of flat display devices 1 for displaying the input information of the own terminal and the transmitted drawing type and still image type.
50, a graphic display device 350 for displaying input information of the own terminal and the transmitted moving image type-drawing first still image type; a notebook copy device 250 for making a copy of the graphic display device 350;
An audio output device 450 is connected to output the transmitted audio input information.

These input/output information are recorded in the storage device 600 and read out as necessary. Each of these devices is
The transmission device 700 transmits data to other two remote locations via the control device.
connected to two conference unit systems.

The above input/output information is transmitted through signals from devices such as an operation input device 850, a status detection device 8000 that detects when conference attendees leave or sit, and a speaker identification device 510 that determines the speaker based on the voices of the participants. The destination is controlled.

FIG. 2 is a block diagram showing the configuration of an example of the graphic display device 350.

This graphic display device 350 displays the input information of its own terminal and the transmitted moving image, and it uses the received data (RXD) output from the control device 900 to display the device address (SA).
D) An identifier detection unit 360 for detecting a frame identifier (PID) and a speaker switching signal (PID), and a video combining unit 370 for decoding video data (P-D).
a.

370b, and a drawing decoding unit 37 that performs decoding of the drawing system.
1a, a drawing playback processing unit 372 that performs drawing-related playback processing;
a, and a still image decoding unit 371 that performs still image decoding.
b.

Still image playback processing unit 372b that performs still image playback processing
, a frame memory unit 380 for temporarily storing and compositing decoded image information, and a display control unit 385 for dividing and displaying drawings, still images, a plurality of moving images, and moving images in a still state, and controlling overlapping. A graphic display section 390 that displays various images, a frame memory section 3800, and a still image transmission processing section 3 that reads and transmits image information (displayed information).
76, and a still image encoding unit 37 that encodes this image information.
5, and a frame identifier (FID) is added to the encoded image information.
) and an identifier adding section 365 that adds .O. The operation of this graphic display device 350 will be described below.

Received data sent from control unit f1900 (几XD)
is composed of control information and image information. Control information includes frame identifier (FID) and device address (SAD)
, speaker switching signal (PID), page control signal (PAG)
E) etc., and there are three types of image information: moving image data, drawing data, and still image data.

First, the identifier detection unit 36G detects this frame identifier (FI
D) It is detected whether it is drawing data, still image data, or moving image data, and then the device address (SAD) is detected to determine whether it is the own terminal or the other party's terminal. Furthermore, it is determined from which video input unit the video data is coming from based on the speaker switching signal (PID).

Also, the control part! ! Page control (P
AGE), it is determined whether or not it is a request to send still image data, which will be described later.

Next, the frame identifier (FID) and the identifier detection section 360
device address (SAD) and talker switching signal (PI
The moving image data (PRD) from which D) has been removed is sent to the moving image decoding section 370a or 370b, and the moving image data compressed and encoded to 32 kbps is decoded.

These moving image decoding units 370a and 370b are connected to the device address (
In response to SAD), two systems with the same configuration are provided to ensure correct decoding without delay even if the own terminal and the other terminal or the other terminals and the other terminals input input at the same time.

This decoded video signal (POUT) is temporarily stored in a predetermined area of the frame memory section 380, and a display screen is synthesized.

Based on the frame identifier (FID), drawing data is sent to the drawing decoding unit 371a, and still image data is sent to the still image decoding unit 371b. Thereafter, up to the frame memory unit 380, the two series are processed in the same way.

The drawing data decoded by the drawing decoding unit 371a is sent to the drawing reproduction processing unit 3728, where it undergoes interpolation processing necessary for graphic display and sent to the frame memory unit 380.

The still image data decoded by the still image decoding unit 371b is sent to a still image reproduction processing unit 372bK, where it undergoes image processing such as linear density exchange, enlargement, and reduction necessary for graphic display, and is sent to the frame memory unit 380. .

Note that the frame identifier (
FID), device address (SAD), and speaker switching signal (PID) are sent to the graphic display section 385, and the frame memory section 380 displays drawings and still images on the same screen, as well as the own terminal and two other party terminals. Display control is performed to simultaneously or selectively display a plurality of moving pictures and a static moving picture of any two terminals in multiple divided displays or overlapping displays.

The moving image signal is then read from the frame memory section 380 at predetermined cycles and displayed on the graphic display section 390.

In addition, when a request to send still image data is generated by page control (PAGE), the stored image data (displayed data) is read from the frame memory section 380,
A still image sending processing section 376 performs direct conversion such as linear density conversion, enlargement, reduction, etc., and sends the still image to a still image encoding section 375.

An identifier adding unit 365 is connected to the output of the still image encoding unit 375, and adds a frame identifier (
FID) and sent to the control device 900.

In the graphic display section 390, the screen is divided, and drawing data, still image data, moving image data, and moving image data in a still state are displayed on the divided screen, respectively, or are displayed in a superimposed manner.

Further, the control device 900 sends the currently displayed still image data obtained from the graphic display device 350 to the storage device 600 or the hard copy device 250 for recording.

Which device is used to record depends on the switch input from the operation input device 810.

Note that when detecting that such a switch input has been made, the control device 900 requests the graphic display device 350 to send still image data using page control (PAGE).

Therefore, in this embodiment, moving image data, still image data, and drawing data can be displayed on a single graphic display device 350, and these data can be displayed in separate and overlapping formats without requiring any special operations. can be done. It is also possible to record current image data.

〔Effect of the invention〕

As explained above, according to the present invention, drawing data, still image data, and video data can be divided and displayed in one device,
You can display them overlapping each other and also record them, so
To proceed with a conference without requiring troublesome operations or a dedicated operator during the proceeding of the conference.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a block diagram of a graphic display device, and FIG. 3 is a block diagram of a conventional electronic conference system.

Claims (2)

[Claims] (1) An input system that inputs drawing data, still image data, video data, and audible sound data, an output system that outputs drawing data, still image data, video data, and audible sound data, and a remote point. In an electronic conference system in which a plurality of conference unit systems are connected via a line, consisting of a transmission system that controls the transmission of data, and a control system that controls the input system, output system, and transmission system, a control information detection means for detecting control information added to and inputted to the image data of the image data/video data; a decoding section for decoding the image data of the drawing data/still image data/video data; a frame memory unit that stores and synthesizes the converted image data; a graphic display unit that displays the image data stored in the frame memory unit; and a frame memory unit that stores and synthesizes the image data stored in the frame memory unit; An electronic conference comprising: a graphic display device comprising a display control unit that controls the display format; and means for causing a recording device to record image data displayed on the graphic display device at an arbitrary time. system. (2) The electronic conference system according to claim 1, wherein the display control unit performs split display control and overlapping display control of the image data based on control information.