Video processor for endoscopy
First Claim
1. A video processor for endoscopic camera or for videoendoscopic probe associated with a color video sensor, the video processor comprising:
- a signal preprocessing circuit designed to be remotely connected to the video sensor through an electrical link without any intermediate connection device, the preprocessing circuit comprising first signal processing means for generating from image signals output by the video sensor raw video signals comprising a brightness signal and a color signal, these signals being not usable directly because they are phase shifted and are noisy due to synchronization residues, and means for synchronizing the video sensor and the first signal processing means; and
a remote auxiliary circuit comprising second signal processing means connected to the first signal processing means through a low impedance electrical link providing good immunity to interference, the second signal processing means comprising means for generating from said raw video brightness and color signals at least one useful video signal according to an international standard.
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Accused Products
Abstract
A video processor for endoscopic camera or for videoendoscopic probe associated with a color video sensor, the video processor comprising: a signal preprocessing circuit designed to be remotely connected to the video sensor through an electrical link without any intermediate connection device, the preprocessing circuit comprising a first signal processor for generating from image signals output by the video sensor raw video signals comprising a brightness signal and a color signal, these signals being not usable directly because they are phase shifted and are noisy due to synchronization residues, and a synchronizing circuit for synchronizing the video sensor and the first signal processor; and a remote auxiliary circuit comprising a second signal processor connected to the first signal processor through a low impedance electrical link providing good immunity to interference, the second signal processor generating from said raw video brightness and color signals at least one useful video signal according to an international video standard.
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Citations
23 Claims
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1. A video processor for endoscopic camera or for videoendoscopic probe associated with a color video sensor, the video processor comprising:
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a signal preprocessing circuit designed to be remotely connected to the video sensor through an electrical link without any intermediate connection device, the preprocessing circuit comprising first signal processing means for generating from image signals output by the video sensor raw video signals comprising a brightness signal and a color signal, these signals being not usable directly because they are phase shifted and are noisy due to synchronization residues, and means for synchronizing the video sensor and the first signal processing means; and
a remote auxiliary circuit comprising second signal processing means connected to the first signal processing means through a low impedance electrical link providing good immunity to interference, the second signal processing means comprising means for generating from said raw video brightness and color signals at least one useful video signal according to an international standard. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A videoendoscopic probe comprising:
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an inspection tube having a distal end which is fixed to a distal end piece, a video sensor housed in the distal end piece, a control handle fixed to the proximal end of said inspection tube, an umbilical cable having a distal end which is fixed to the control handle, a connection device fixed to the proximal end of the umbilical cable, and designed to be connected to a light generator, and a bundle of illumination fibers housed in the umbilical cable, in the control handle and in the inspection tube, the distal end of the bundle being housed in the distal end to illuminate a target when the proximal end of the bundle is connected to a light generator, a signal preprocessing circuit designed to be remotely connected to the video sensor through an electrical link without any intermediate connection device, the preprocessing circuit comprising first signal processing means for generating from image signals output by the video sensor raw video signals comprising a brightness signal and a color signal, these signals being not usable directly because they are phase shifted and are noisy due to synchronization residues, and means for synchronizing the video sensor and the first signal processing means; and
a remote auxiliary circuit comprising second signal processing means connected to the first signal processing means through a low impedance electrical link providing good immunity to interference, the second signal processing means comprising means for generating from said raw video brightness and color signals at least one useful video signal according to an international standard. - View Dependent Claims (15, 16, 17, 18)
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19. An endoscopy camera comprising a camera head connectable on an eye piece of an endoscope or a fiberscope, said camera head comprising
a video sensor, a multiconductor umbilical cable having a distal end which is fixed to said camera head, a connection device fixed to the proximal end of the umbilical cable, a signal preprocessing circuit designed to be remotely connected to the video sensor through an electrical link without any intermediate connection device, the preprocessing circuit comprising first signal processing means for generating from image signals output by the video sensor raw video signals comprising a brightness signal and a color signal, these signals being not usable directly because they are phase shifted and are noisy due to synchronization residues, and means for synchronizing the video sensor and the first signal processing means; - and
a remote auxiliary circuit comprising second signal processing means connected to the first signal processing means through a low impedance electrical link providing good immunity to interference, the second signal processing means comprising means for generating from said raw video brightness and color signals at least one useful video signal according to an international standard. - View Dependent Claims (20, 21, 22, 23)
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Specification