DEVICE AND METHOD FOR REDUCING EFFECTS OF VIDEO ARTIFACTS
First Claim
Patent Images
1. An endoscopic system comprising:
- a first imaging device;
a second imaging device;
a light source; and
a controller that reduces an artifact in an image produced by the first imaging device.
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Abstract
A method for reducing an effect of a video artifact includes adjusting a phase of a second imaging device'"'"'s video clock signal so that a phase of the second imaging device'"'"'s video synchronization signal matches a phase of a first imaging device'"'"'s video synchronization signal. An endoscopic system includes a first imaging device, a second imaging device, a light source, and a controller that reduces an artifact in an image produced by the first imaging device. In some embodiments, the first imaging device faces the light source.
216 Citations
60 Claims
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1. An endoscopic system comprising:
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a first imaging device;
a second imaging device;
a light source; and
a controller that reduces an artifact in an image produced by the first imaging device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An endoscopic system comprising:
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a first imaging device;
a second imaging device;
a light source; and
a controller that adjusts a frequency of the second imaging device'"'"'s video clock signal so that a frequency of the second imaging device'"'"'s video synchronization signal matches a frequency of the first imaging device'"'"'s video synchronization signal and that varies a phase difference between video synchronization signals of the first and second imaging devices to reduce an artifact in an image produced by the first imaging device.
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20. A device for reducing an effect of an artifact produced by an endoscopic system including a first imaging device, a second imaging device, and a light source, the device comprising:
a phase lock loop circuit that is connected to the first imaging device to receive a video synchronization signal of the first imaging device and connected to the second imaging device to receive a video synchronization signal of the second imaging device and to send a video clock signal for the second imaging device. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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29. A method for reducing an effect of a video artifact, comprising
adjusting a frequency of a second imaging device'"'"'s video clock signal so that a frequency of the second imaging device'"'"'s video synchronization signal matches a frequency of a first imaging device'"'"'s video synchronization signal.
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32. The method of claim 32, wherein the moving step includes moving the artifact vertically.
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35. An endoscopic system comprising:
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a first imaging device;
a second imaging device;
a light source; and
a controller that adjusts a frequency of the second imaging device'"'"'s video clock signal so that a frequency of the second imaging device'"'"'s video synchronization signal matches a frequency of the first imaging device'"'"'s video synchronization signal and that varies a phase difference between video synchronization signals of the first and second imaging devices.
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36. An endoscopic system controller including a first imaging device, a second imaging device, and a light source, the controller device comprising:
a phase lock loop circuit that is connected to the first imaging device to receive a video synchronization signal of the first imaging device and connected to the second imaging device to receive a video synchronization signal of the second imaging device and to send a video clock signal for the second imaging device. - View Dependent Claims (34, 37, 38, 39, 40, 41, 43, 44)
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45. An endoscopic system comprising:
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a first imaging device;
a first light source;
a second imaging device;
a second light source, wherein the first imaging device and light source face the second imaging device and light source; and
a controller including a phase lock loop circuit that is connected to the first imaging device to receive a video synchronization signal of the first imaging device and connected to the second imaging device to receive a video synchronization signal of the second imaging device and to send a video clock signal for the second imaging device so that image frames of the imaging devices have the same frequency and are in phase, wherein the first imaging device and light source are powered on during one half of the frame period, and wherein the second imaging device and light source are powered on during the other half of the frame period. - View Dependent Claims (46)
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47. An endoscopic system comprising:
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a first imaging device;
a second imaging device;
a first light source;
a second light source, and a controller that adjusts a frequency of the second imaging device'"'"'s video clock signal so that a frequency of the second imaging device'"'"'s video synchronization signal matches a frequency of the first imaging device'"'"'s video synchronization signal and that varies the phase difference between video synchronization signals of the first and second imaging devices to be of opposite phase.
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48. An endoscopic system controller including a first imaging device, a second imaging device, a first light source, a second light source, the controller device comprising:
a phase lock loop circuit that is connected to the first imaging device to receive a video synchronization signal of the first imaging device and connected to the second imaging device to receive a video synchronization signal of the second imaging device and to send a video clock signal for the second imaging device. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56)
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57. An endoscopic system comprising:
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a first imaging device;
a first light source;
a second imaging device;
a second light source, wherein the first imaging device and light source face the second imaging device and light source; and
a controller including a phase lock loop circuit that is connected to the first imaging device to receive a video synchronization signal of the first imaging device and connected to the second imaging device to receive a video synchronization signal of the second imaging device and to send a video clock signal for the second imaging device so that image frames of the imaging devices have the same frequency and are in phase, wherein the first imaging device acquires an image and the first light source is powered on during one half of the frame period, and wherein the second imaging device acquires an image and the second light source is powered on during the other half of the frame period. - View Dependent Claims (58)
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59. A method for reducing light interference between a first imaging device and light source and a second imaging device and light source of an endoscopic system, wherein the first imaging device and light source face the second imaging device and light source, the method comprising:
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using a phase lock loop circuit to receive a video synchronization signal of the first imaging device and to receive a video synchronization signal of the second imaging device and to send a video clock signal for the second imaging device so that image frames of the imaging devices have the same frequency and are in phase; and
powering the first imaging device and light source on during one half of the frame period, and powering the second imaging device and light source on during the other half of the frame period.
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60. A method for reducing light interference between a first imaging device and light source and a second imaging device and light source of an endoscopic system, wherein the first imaging device and light source face the second imaging device and light source, the method comprising:
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adjusting a frequency of the second imaging device'"'"'s video clock signal so that a frequency of the second imaging device'"'"'s video synchronization signal matches a frequency of the first imaging device'"'"'s video synchronization signal;
adjusting the phase difference between the video synchronization signals of the first and second imaging devices to be of opposite phase.
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Specification