Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
180 words
An apparatus for processing the outputs of a two dimensional planar array of spaced apart receiving elements where the receiving elements are grouped in spaced apart horizontal and vertical rows, said apparatus comprising: a plurality of surface acoustic wave (SAW) devices, each SAW device corresponding to a respective horizontal row of receiving elements and being adapted to produce a plurality of horizontal phase shift outputs which linearly correspond to the number and horizontal spacing of receiving elements in a respective horizontal row; an additional SAW device connected to the horizontal SAW devices for introducing a vertical phase shift factor in the horizontal outputs of each horizontal SAW device so that each SAW device is capable of producing a plurality of combined phase shift outputs, the vertical phase shift factors corresponding linearly to the spacing of the receiving elements in a vertical direction; and means connected to each horizontal SAW device for mixing the combined phase shift outputs with the respective outputs of the receiving elements in a respective horizontal row so as to produce a plurality of mixed output signals.
Claim 2
Independent Claim
180 words
An apparatus for processing the outputs of a two dimensional planar array of spaced apart receiving elements where the receiving elements are grouped in spaced apart horizontal and vertical rows, said apparatus comprising: a plurality of surface acoustic wave (SAW) devices, each SAW device corresponding to a respective horizontal row of receiving elements and being adapted to produce a plurality of horizontal phase shift outputs which linearly correspond to the number and horizontal spacing of receiving elements in a respective horizontal row; an additional SAW device connected to the horizontal SAW devices for introducing a vertical phase shift factor in the horizontal outputs of each horizontal SAW device so that each SAW device is capable of producing a plurality of combined phase shift outputs, the vertical phase shift factors corresponding linearly to the spacing of the receiving elements in a vertical direction; and means connected to each horizontal SAW device for mixing the combined phase shift outputs with the respective outputs of the receiving elements in a respective horizontal row so as to produce a plurality of mixed output signals.
Claim 3
Dependent Claim
24 words
An apparatus as claimed in claim 1 including: the substrate of the SAW device having a zinc oxide layer on a silicon/silicon oxide base.
Claim 4
Dependent Claim
37 words
An apparatus as claimed in claim 1 including: a summer for summing the mixed output signals from all of the mixers; and an upper sideband filter for receiving the summed output and producing the upper sideband thereof.
Claim 5
Dependent Claim
83 words
An apparatus as claimed in claim 3 including: first and second signal generators connected to the horizontal and vertical SAW devices respectively; a video device connected to the upper sideband filter for receiving the upper sideband of the summed output; means for controlling the horizontal scan of the video device according to the chirp repetition rate of the first signal generator; and means for controlling the vertical scan of the video device according to the chirp repetition rate of the second signal generator.
Claim 6
Dependent Claim
139 words
An apparatus as claimed in claim 1 including: each SAW device having a pair of transducers mounted on a substrate in a spaced apart relationship, each transducer being capable of receiving and converting an electrical chirp signal into an acoustic signal for propagation across the surface of the SAW device; a plurality of taps mounted on the substrate in a spaced apart relationship between said pair of transducers for operating in cooperation with the substrate to receive, square, and convert the acoustic signals back into electrical signals; the spacing between the taps being proportionally matched to the spacing between the receiving elements; and each tap of the vertical SAW device being connected to a respective horizontal SAW device for introducing said vertical phase shift factor, and the taps of each horizontal SAW device being connected to a respective mixer.
Claim 7
Dependent Claim
150 words
An apparatus as claimed in claim 5 including: additional mixers, each mixer being interconnected between a respective tap of the vertical SAW device and a respective horizontal SAW device; first and second signal generators, each signal generator being capable of generating a pair of linear FM chirp signals with the same starting frequency, the chirp signals of the first signal generator being of opposite slope with respect to one another and the chirp signals of the second signal generator being of the same slope with respect to one another; one of the chirp signals from the first signal generator being fed to a respective transducer of each of the horizontal SAW devices and the other chirp signal of the first signal generator being fed to each of said additional mixers; and each chirp signal of the second signal generator being fed to a respective transducer of the vertical SAW device.
Claim 8
Dependent Claim
52 words
An apparatus as claimed in claim 6 including: a summer for summing the mixed output signals from all of the first mentioned mixers which correspond to the horizontal SAW devices so as to produce a summed output; an upper sideband filter for receiving the summed output and producing the upper sideband thereof.
Claim 9
Dependent Claim
69 words
An apparatus as claimed in claim 7 including: a video device connected to the upper sideband filter for receiving the upper sideband of the summed output; means for controlling the horizontal scan of the video device according to the chirp repetition rate of the first signal generator; and means for controlling the vertical scan of the video device according to the chirp repetition rate of the second signal generator.
Claim 10
Dependent Claim
24 words
An apparatus as claimed in claim 8 including: the substrate of the SAW device having a zinc oxide layer on a silicon/silicon oxide base.