Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
289 words
In a video camera adapted for use with, and for retrofit mounting on a computer monitor for a personal computer (PC) workstation, said video camera comprising a first housing, an optical window with an optical axis and an optical video sensor arranged to receive an optical image passed through said window, said window and said sensor being mounted in said first housing and arranged to view the face of a computer operator at said PC workstation, said video camera being connectable and operable as a single camera unit in a videoconferencing system for said PC workstation, said monitor comprising a second housing and a display screen mounted in the second housing and arranged to be viewed by the computer operator, said display screen having an image display surface with a central point and a central axis extending outward from said central point perpendicular to said display surface, said second housing including a frame portion disposed adjacent to and surrounding said display surface, said frame portion having a top surface and two lateral side surfaces; the improvement wherein said first housing is so configured, when mounted on said top surface of said second housing with said optical axis parallel to said central axis, as to position said optical window between said frame portion and the computer operator, with its optical axis intersecting said frame portion at a position below said top surface and between said lateral side surfaces of said frame portion; whereby the optical window is arranged at substantially eye level of the computer operator such that eyes of the operator's face in the image formed by the video sensor appear to be looking directly into the optical window when the computer operator is gazing at the display screen.
Claim 2
Dependent Claim
289 words
In a video camera adapted for use with, and for retrofit mounting on a computer monitor for a personal computer (PC) workstation, said video camera comprising a first housing, an optical window with an optical axis and an optical video sensor arranged to receive an optical image passed through said window, said window and said sensor being mounted in said first housing and arranged to view the face of a computer operator at said PC workstation, said video camera being connectable and operable as a single camera unit in a videoconferencing system for said PC workstation, said monitor comprising a second housing and a display screen mounted in the second housing and arranged to be viewed by the computer operator, said display screen having an image display surface with a central point and a central axis extending outward from said central point perpendicular to said display surface, said second housing including a frame portion disposed adjacent to and surrounding said display surface, said frame portion having a top surface and two lateral side surfaces; the improvement wherein said first housing is so configured, when mounted on said top surface of said second housing with said optical axis parallel to said central axis, as to position said optical window between said frame portion and the computer operator, with its optical axis intersecting said frame portion at a position below said top surface and between said lateral side surfaces of said frame portion; whereby the optical window is arranged at substantially eye level of the computer operator such that eyes of the operator's face in the image formed by the video sensor appear to be looking directly into the optical window when the computer operator is gazing at the display screen.
Claim 3
Dependent Claim
19 words
The video camera according to claim 1, wherein said first housing includes means for attachment to said second housing.
Claim 4
Dependent Claim
46 words
The video camera according to claim 2, wherein said attachment means includes means for adjusting the orientation of the video camera on said second housing, whereby the optical axis of the optical window may be adjusted with respect to the central axis of the display surface.
Claim 5
Dependent Claim
18 words
The video camera according to claim 1, further comprising an audio pickup system arranged in said first housing.
Claim 6
Dependent Claim
17 words
The video camera according to claim 1, further comprising an audio speaker arranged in said first housing.
Claim 7
Dependent Claim
34 words
The video camera according to claim 5, wherein said audio speaker has an acoustic emission pattern directed toward said display surface, such that sound is reflected off said display surface toward the computer operator.
Claim 8
Dependent Claim
43 words
The video camera according to claim 6, wherein said audio speaker is located in said first housing behind said optical window in a portion of said first housing that extends forward of said frame portion of said second housing toward the computer operator.
Claim 9
Dependent Claim
36 words
The video camera according to claim 1, further comprising, within said first housing, an audio pickup system, an audio speaker and an audio controller to prevent feedback from said audio speaker to said audio pickup system.
Claim 10
Dependent Claim
16 words
The video camera according to claim 8, wherein said controller is a full duplex audio controller.
Claim 11
Dependent Claim
14 words
The video camera according to claim 1, wherein said optical window includes a lens.
Claim 12
Dependent Claim
17 words
The video camera according to claim 1, further comprising a system for compensating for ambient illumination conditions.
Claim 13
Dependent Claim
16 words
The video camera according to claim 1, wherein said videoconferencing system comprises an analog transmission format.
Claim 14
Dependent Claim
27 words
The video camera according to claim 12, further comprising an interface for converting an analog format to a digital format for communication with a second videoconferencing system.
Claim 15
Dependent Claim
29 words
The video camera according to claim 1, wherein said videoconferencing system comprises an analog format for transmission of image signals and a digital format for transmission of control signals.
Claim 16
Dependent Claim
21 words
The video camera according to claim 14, wherein said analog format and said digital format are transmitted on different physical media.
Claim 17
Dependent Claim
48 words
The video camera according to claim 1, wherein, when mounted on said second housing, said first housing has a main portion arranged on said top surface of said second housing and a lower dependent portion arranged in front of said frame portion and extending below said top surface.
Claim 18
Dependent Claim
27 words
The video camera according to claim 1, further comprising a solid state device disposed on said first housing above said optical window and facing said computer operator.