Westinghouse Electric Corporation

Sprint Communications Comapny L.p.

Kenneth C Ryan

Raymond A Lloyd

Robert Martinez

William L Hrybyk, Deceased

A message initiated at a first terminal and transmitted over a first communications link to a relay interface may be relayed to a second terminal over a second communications link by converting the words in the message received at the relay interface into a format compatible for use by the second terminal. Then, the formatted words are individually analyzed so that corrections may be made prior to display at the second terminal. The formatted words may be corrected manually by a relay agent or automatically utilizing a computer program associated with a relay terminal at the relay interface. Then, the analyzed words are displayed at the second terminal. The relay interface may be used for unilateral and bilateral communication between a standard telephone set and a telecommunications device for the deaf (TDD).

Telecommunications relay system

A system for evaluating members or a family of similar devices by comparing images of a model device to the image of the member to be evaluated is disclosed. An image of the model device is first produced and stored in a memory. An image of the member to be evaluated is produced as the stored image of the model device is simultaneously reproduced. The images of the model and the member being evaluated are compared to generate a comparison signal related to the differences therebetween. The comparison signal is sampled at a predetermined rate, to produce a digital signal indicating sample points where the comparison signal exceeds a predetermined value. Statistical techniques are used to analyze the digital signal to determine which portions of this signal correspond to significant differences between the images of the model device and the member being evaluated. The portions of the digital signals corresponding to significant differences between images of the model and device being evaluated are combined with the image of the device being evaluated to produce a multicolor composite image. In the composite image areas of the image of the device being evaluated which are significantly different from the image of the model device are displayed in red with the remainder of the composite image being green.

Sampled differential analyzer

A system for evaluating similar object by comparing an image of the objects to be evaluated to the image of a similar object is disclosed. The system utilizes a TV camera to generate and store in a video memory an image of a reference member of the family of objects to be evaluated. This reference member has been previously evaluated by other means to determine that it meets predetermined specifications. An image of the member to be evaluated is then generated by focusing the TV camera on this member. Simultaneously, the stored image of the reference member is read from the video memory. These two images are compared to each other by an analog circuit to generate an analog signal related to the difference between these two signals. Sync signals are also generated by the memory to control the TV camera and a line counter which indicates which lines of the TV images are being compared. The line counter controls a digital memory to read stored digital data identifying the lines of the TV images to be used in evaluating the object being examined. The analog signal is analyzed to generate pulses. The width of each of the pulses is related to the amplitude and time duration of the difference between the lines of the TV images. If the width of this pulse exceeds a predetermined duration an error signal is generated indicating that the object being evaluated does not comply with predetermined specifications. Alternatively, the system may be modified to require the detection of significant errors in at least two adjacent scan lines before an error signal is generated.

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Finksburg, MD, United States of America

Kenneth C Ryan