A system, such as a video conferencing system, is provided which includes an image pickup device, an audio pickup device, and an audio source locator. The image pickup device generates image signals representative of an image, while the audio pickup device generates audio signals representative of s
A system, such as a video conferencing system, is provided which includes an image pickup device, an audio pickup device, and an audio source locator. The image pickup device generates image signals representative of an image, while the audio pickup device generates audio signals representative of sound from an audio source, such as speaking person. The audio source locator processes the image signals and audio signals to determine a direction of the audio source relative to a reference point. The system can further determine a location of the audio source relative to the reference point. The reference point can be a camera. The system can use the direction or location information to frame a proper camera shot which would include the audio source.
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A system, such as a video conferencing system, is provided which includes an image pickup device, an audio pickup device, and an audio source locator. The image pickup device generates image signals representative of an image, while the audio pickup device generates audio signals representative of s
A system, such as a video conferencing system, is provided which includes an image pickup device, an audio pickup device, and an audio source locator. The image pickup device generates image signals representative of an image, while the audio pickup device generates audio signals representative of sound from an audio source, such as speaking person. The audio source locator processes the image signals and audio signals to determine a direction of the audio source relative to a reference point. The system can further determine a location of the audio source relative to the reference point. The reference point can be a camera. The system can use the direction or location information to frame a proper camera shot which would include the audio source. rings, so that at least some of the plurality of electron-emitting devices connected to those scanning wirings are driven. 3. An image-forming apparatus comprising: a plurality of electron-emitting devices arranged in a matrix configuration on a substrate; a plurality of scanning wirings arranged on the substrate; a plurality of signal wirings arranged on the substrate to intersect with said plurality of scanning wirings; and a plate provided with fluorescent material opposing the substrate and being separated therefrom by a space, wherein each of said electron-emitting devices comprises a first electrode on the substrate and a second electrode on the substrate opposing the first electrode and separated from the first electrode by a gap, and emits electrons from a portion between the first and second electrodes when a voltage is applied across the first and second electrodes, each of said scanning wirings is arranged along a direction in which the first and second electrodes oppose each other and is connected to the first electrodes, each of said signal wirings is connected to the second electrodes, and a scanning pulse is applied sequentially to the plurality of scanning wirings, and signal pulses are applied to the plurality of signal wirings, so that at least some of the plurality of electron-emitting devices connected to those scanning wirings are driven. 4. An image-forming apparatus, comprising: an electron source; an image forming member located opposite said electron source, for forming an image when irradiated by an electron beam emitted from said electron source; and at least one atmospheric supporting member located between corresponding portions of said electron source and said image forming member, wherein said electron source comprises a plurality of electron-emitting devices, a plurality of scanning wirings, and a plurality of signal wirings, said plurality of electron-emitting devices arranged in a matrix on a substrate by said plurality of scanning wirings and said plurality of signal wirings, and comprising a pair of electroconductive films and a pair of electrodes, wherein the electroconductive films are connected to respective ones of the electrodes by covering portions of those respective electrodes, each of said electron-emitting devices emits electrons from an electron emission region between the electrodes in the pair thereof when a voltage is applied across the electrodes in the pair thereof, each of said scanning wirings is connected to one of the electrodes in the pair of each electron-emitting device, each of said signal wirings is connected to the other of the electrodes in the pair of each electron-emitting device, the electrode connected to one scanning wiring in one electron-emitting device is positioned between the electron emission region of said one electron-emitting device and the signal wiring connected to an electron-emitting device neighboring said one electron-emitting device which is connected to said one scanning wiring, and a scanning pulse is applied sequentially to the plurality of scanning wirings, and signal pulses are applied to the plurality of signal wirings, so that at least some of the plurality of electron-emitting devices connected to those scanning wirings are driven. 5. The image forming apparatus according to claim 1 or 4, wherein for a height from the surface of the substrate to the surface of the pair of electroconductive films in each of the electron emitting devices, the height at a region on the electrodes in the pair is higher than the height at a region between the electrodes in the pair. 6. The image-forming apparatus according to any one of claims 1, 3 or 4, wherein a voltage in the range of 5 kV to 10 kV is applied to the image forming member. 7. The image-forming apparatus according to claim 1 or 4, wherein the electroconductive films contain Pd particles. 8. An electron beam-generating apparatus comprising: a plurality of electron- emitting devices arranged in a matrix configuration on a substrate; a plurality of scanning wirings arranged on the substrate; and a plurality of signal wirings which intersect with said plurality of scanning wirings, wherein each of said electron-emitting devices comprises a first electrode on the substrate and a second electrode on the substrate opposing the first electrode and separated from the first electrode by a gap, and emits electrons from an electron emission region between the first and second electrodes when a voltage is applied across the first and second electrodes, each of said scanning wirings is connected to the first electrodes, each of said signal wirings is connected to the second electrodes, the electrode connected to one scanning wiring in one electron-emitting device is positioned between the electron emission region of said one electron-emitting device and the signal wiring connected to an electron-emitting device neighboring said one electron-emitting device which is connected to said one scanning wiring, and a scanning pulse is applied sequentially to the plurality of scanning wirings, and signal pulses are applied to the plurality of signal wirings, so that at least some of the plurality of electron-emitting devices connected to those scanning wirings are driven. 9. The electron beam-generating apparatus according to claim 2 or 8, wherein each of the electron-emitting devices is formed at an area on the substrate where the scanning wirings an signal wirings are not formed. 10. The electron beam-generating apparatus according to claim 2 or 8, wherein each of the electron-emitting devices further comprises an electroconductive film on the substrate between the first and second electrodes, the ends of the electroconductive film overlying respectively the first and second electrodes, and wherein for a height from the surface of the substrate to the surface of the electroconductive film in each of the electron emitting devices, the height at a region on the first and second electrodes is higher than the height at a region between the first and second electrodes. 11. The electron beam-generating apparatus according to claim 2 or 8, wherein a voltage in the range of 13 V to 30 V is applied between the electrodes in each of the electron-emitting devices to emit electrons. 12. An image-forming apparatus comprising: a plurality of electron-emitting devices arranged in a matrix configuration on a substrate; a plurality of scanning wirings arranged on the substrate; a plurality of signal wirings arranged on the substrate to intersect with said plurality of scanning wirings; and a plate provided with fluorescent material opposing the substrate and being separated therefrom by a space, wherein each of said electron-emitting devices comprises a first electrode on the substrate and a second electrode on the substrate opposing the first electrode and separated from the first electrode by a gap, and emits electrons from an electron emission region between the first and second electrodes when a voltage is applied across the first and second electrodes, each of said scanning wirings is connected to the first electrodes, each of said signal wirings is connected to the second electrodes, the electrode connected to one scanning wiring in one electron-emitting device is positioned between the electron emission region of said one electron-emitting device and the signal wiring connected to a neighboring electron-emitting device which is connected to said one scanning wiring, and a scanning pulse is applied sequentially to the plurality of scanning wirings, and signal pulses are applied to the plurality of signal wirings, so that at least some of the plurality of electron-emitting devices connected to the scanning wirings are driven. 13. The image-forming apparatus according to any one of claims 1, 3, 4, or 12 wherein each of the electron-emitting devices is formed at an area on the substrate where the scanning wirings and signal wirings are not formed. 14. The image-forming apparatus according to claim 3 or 12, wherein each of said electron-emitting devices further comprises an electroconductive film on the substrate between the first and second electrodes, the ends of the electroconductive film overlying respectively the first and second electrodes, and wherein for a height from the surface of the substrate to the surface of the electroconductive film in each of the electron emitting devices, the height at a region on the first and second electrodes is higher than the height at a region between the first and second electrodes. 15. The image-forming apparatus according to any one of claims 1, 3, 4 or 12, wherein a voltage in the range of 13 V to 30 V is applied between the electrodes in each of the electron-emitting devices to emit electrons.
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