JPH04137686U - Automatic transmission image selection device for video conference system - Google Patents

Abstract

(57) [Summary] [Structure] When audio signals of a certain level or higher are input from a plurality of microphones, the audio converter 19 outputs a digital signal. The sampling circuit 20 samples this digital signal at a constant time. Decoder circuit 21
creates a transmission image selection signal for selecting the camera corresponding to the speaker based on this sampling data, and supplies it to the television camera controller 8. [Effect] Equipped with a transmission image selection device that selects transmission images based on the speaker's voice, not only eliminates the need for troublesome camera switching operations from the moderator's control panel, but also ensures that the transmission audio always corresponds to the transmission image. This has the effect of facilitating efficient meetings and communication.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to a video conferencing system, and in particular, selects images to be transmitted based on voice of speech. This invention relates to a transmission image selection method.

0002

[Conventional technology]

In the conventional video conference system, transmission image selection is performed by the moderator 22 shown in FIG. To take a picture of all attendees or to take a picture with the speaker in the center, operate the control panel 9 and turn the camera. I was switching cameras and adjusting the camera direction.

0003

[Problem that the idea aims to solve]

This conventional video conferencing system requires manual selection of images to be transmitted. If the presenter is busy or inexperienced, the image of the caller will not be sent and will always be displayed. Only a panoramic image is sent, making it difficult for the receiver to identify who is speaking. This results in meetings relying only on audio, which reduces understanding and impression, making it difficult to communicate effectively. There was a problem that communication could not be achieved.

0004 The purpose of this invention is to select an image signal of a conference attendee based on the voice of the conference attendee. , provides an automatic transmission image selection device for a video conference system to be transmitted to a conference room of the other party. There is a particular thing.

[0005]

[Means to solve the problem]

The automatic transmission image selection device for the video conference system of this invention selects the audio signal from the microphone. an audio converter that inputs a digital signal and outputs a digital signal at a certain input audio level; A sampling circuit that samples the digital signal at a fixed time, and this It consists of a decoder circuit that generates a transmission image selection signal based on sampling data. A camera is equipped with a transmission image selection device that is configured to be The system is configured to automatically select the output image of the remote device and send it to the other party's conference room.

[0006]

【Example】

Next, the present invention will be explained with reference to the drawings.

[0007] FIG. 1 is a block diagram showing one embodiment of the present invention. Transmission image selection device of the present invention 7 is a control device 1 that performs audio and video signal switching, interfaces with transmission paths, etc. The sound from the microphones 17-1 to 17-3 is incorporated into the echo canceller 6. Input the signal. The output of the transmission image selection device 7 is sent to the television camera controller 8. One of the multiple camera output images input to the video processing device 2 via Control to choose.

[0008] FIG. 2 is a block diagram of the transmission image selection device 7 shown in FIG. This audio signal is extracted from the echo canceller and converted into a digital signal at a certain level. An audio converter 19 that outputs a signal and samples this digital signal at a fixed time. A sampling circuit 20 that performs sampling, and a speaker based on this sampling data. Create a transmission image selection signal that selects a compatible camera, and use it to control the TV camera. and a decoder circuit 21 that supplies data to the controller 8.

[0009] Referring to FIG. 1 and FIG. 3, the panoramic camera 16, attendee C25, and attendee D2 Person camera 13 zooms in and takes a picture of person 6, and person takes a picture of moderator 22 and attendee A23 Image signals of the camera 15 and the close-up camera 14 that captures the center is input to the video processing device 2 and is controlled by the television camera controller 8. , one of the camera image signals is selected and supplied to the image encoding unit 3, and transmitted. The data is transmitted to the other party via the road encoding unit 5. Also, TV camera controller 8 receives a transmission image selection signal from both the operation panel 9 and the transmission image selection device 7.

0010 Next, the transmission image selection device 7 will be explained with reference to FIG. Figure 2 shows transmission image selection 7 is a block diagram of the device 7. FIG. A certain level from the microphone via the echo canceller. When more than one audio signal is input, the audio converter 19 outputs a signal corresponding to each microphone. The digital signal is output to sampling circuit 20. This sampling circuit 20 This prevents the transmitted image from being switched due to instantaneous audio input such as noise. The signal from which noise has been removed by the sampling circuit 20 is input to the decoder circuit 21. Ru. In the decoder circuit 21, the panoramic camera is selected when speakers overlap at the same time or when there is silence. A transmission image selection signal is generated in which images are selected by a single audio input. and supplies it to the television camera controller 8.

[0011] The television camera controller 8 receives data from the decoder circuit 21 of the transmission image selection device 7. The output control signal controls the video processing device 2 and outputs the output image of the camera. Select and input to the image encoding section 3. The selected camera output image is sent to the image encoder 3. The signal is sent to the other party's conference room via the transmission encoder 5. Operate the operation panel 9 in this way. The image of the speaker is automatically selected based on the speaker's voice of the conference attendee without having to create a new image. become. Therefore, this operation panel 9 is used for maintenance and inspection.

0012

[Effect of the idea]

As explained above, the present invention selects images to be transmitted from audio input from multiple microphones. Equipped with a transmission image selection device that allows the moderator to select images from the control panel. Not only does it eliminate the need for camera switching operations, but the transmitted audio and transmitted images always correspond. This has the effect of facilitating efficient meetings and communication.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing one embodiment of the present invention.

FIG. 2 is a block diagram showing an embodiment of the transmission image selection device of FIG. 1;

FIG. 3 is a floor layout of a conference room in this embodiment.

[Explanation of symbols]

1 Control device 2 Video processing device 3 Image encoding section 4 Audio encoder 5 Transmission path encoding section 6 Echo canceller 7 Transmission image selection device 8 TV camera controller 9 Operation panel 10 Network 11 Recipient person monitor 12 Transmission monitor 13 Camera (fixed on the right) 14 Camera (fixed in the center) 15 Camera (fixed on the left) 16 Camera (remote control) 17 Mike 18 Speaker 19 Audio converter 20 Sampling circuit 21 Decoder circuit 22 Moderator 23 Attendee A 24 Attendee B 25 Attendee C 26 Attendee D 27 table

Claims (1)

[Scope of utility model registration request] 1. An audio converter that inputs an audio signal from a microphone and outputs a digital signal at a certain input audio level; a sampling circuit that samples the digital signal at a certain time; and a decoder circuit that generates a transmission image selection signal, and is equipped with a transmission image selection device that is configured to automatically select an output image of a camera device that images the speaker and transmit it to the other party's conference room based on the outgoing voice. Automatic transmission image selection device for video conference system featuring features.