Abstract: A video output supervisor includes a test region indicator for verifying that the commanded output to specific areas of a display is valid. Areas reserved displaying safety-critical data in the data frame to be displayed can be supervised for the presence and status of display indicators of the safety-critical data. The confidence of the supervision can be increased by measuring other display and frame parameters in conjunction with supervising the indicators of the safety-critical data.

Abstract: Video processing arrangement including a host computer, a video asset coupled to the computer for generating video signals, and an interface for connecting the video asset to the computer to enable the display of the video signals on a monitor. The video asset includes primary elements such as a primary composite video module that produces different types of a primary video signal and outputs the primary video signal, and a secondary video source module that produces a secondary composite video signal and outputs the secondary composite video signal. The primary composite video module includes a memory component including a user-programmable sequence of bits representative of a video signal and user-programmable signal generators synchronized to the primary video signal output of the primary composite video module. The memory component includes four user specified pulse memories which each hold a series of arbitrary bit line patterns.

Abstract: A dual-mode projection apparatus has a projection module for projecting an image onto a projection surface. An image sensor module captures images of the projection surface and determines spatial and temporal characteristics of a visible light spot superimposed on the projection surface. A communications module transmits the spatial and temporal characteristics of the visible light spot to a remote device for remote control of the device based on the spatial and temporal characteristics of the visible light spot.

Abstract: In digital display circuitry, configured to display an image encoded in an analog display signal, the digital display circuitry includes analog-to-digital converter (ADC) circuitry to recover pixel data elements of the image. During vertical blanking intervals of the analog display signal, the ADC circuitry is calibrated. Outside the vertical blanking intervals, the ADC circuitry is used to convert information in the analog display signal into digital representations of the pixel data elements. For example, the calibrating may include determining more acceptable values for certain ones of the operational parameters of the ADC circuitry.

Abstract: The present invention relates to methods and apparatus for measuring the quality of video (e.g., television) signals. In particular, the methods and apparatus of the present invention allow for the measurement of various quality parameters of analog or digital video signals at a set-top terminal 10 or similar device, without the need for external test equipment. A video signal 14, which contains a test signal, is received at a decoder 20. The video signal 14 is decoded and temporarily stored in memory 40. A processor 30 associated with the decoder 20 and the memory 40 analyzes the test signal and calculates a quality parameter for the received video signal 14 based on the test signal. The quality measurements can also be accessed remotely and downloaded, for example, by a cable television provider at a cable television headend. The video quality measurement may include various indicators of end-to-end system performance, including the performance of the set-top terminal 10 or similar device.

Abstract: The present invention relates to methods and apparatus for measuring the quality of video (e.g., television) signals. In particular, the methods and apparatus of the present invention allow for the measurement of various quality parameters of analog or digital video signals at a set-top terminal 10 or similar device, without the need for external test equipment. A video signal 14, which contains a test signal, is received at a decoder 20. The video signal 14 is decoded and temporarily stored in memory 40. A processor 30 associated with the decoder 20 and the memory 40 analyzes the test signal and calculates a quality parameter for the received video signal 14 based on the test signal. The quality measurements can also be accessed remotely and downloaded, for example, by a cable television provider at a cable television headend. The video quality measurement may include various indicators of end-to-end system performance, including the performance of the set-top terminal 10 or similar device.

Abstract: Performance testing of transmission signals to ensure quality and compliance with governmental regulations by limiting interference with intended signals, such as entertainment signals seen by viewers, while reducing the manpower required for testing and eliminating the need for communication between field units and sources of transmission in order to improve traditional performance testing, for example, in Cable Television (CTV) Systems or CATV (Community Antenna TeleVision) Systems, which testing not only has been time consuming but also has required partial disruption of service, and application of these concepts to other modes of information transmission.

Abstract: A novel compound of the formula: wherein R1 is a halogen atom, an optionally substituted heterocyclic, hydroxy, thiol or amino group; A is an optionally substituted acyl group, an optionally substituted heterocyclic group, an optionally substituted hydroxy group, or an optionally esterified or amidated carboxy group; B is an optionally substituted aromatic group; Y is a divalent aliphatic hydrocarbon group, or a salt thereof, which have an excellent insulin secertion-promoting and blood sugar-depressing effect, and useful in agents for diabetes.

Abstract: In a video signal test, a sync signal test is first performed in which specification items of sync signals are measured. If the result is good, then a dot level test is performed using a dot discriminating pattern in which a dot level of the video signal changes between the maximum value and the minimum value for every dot. If the result is good, then a gradation test is finally performed using a gradation change pattern in which the gradation gradually changes for every horizontal line. In a case that the gradation test result is determined to be good, the functions of the video signal generator are finally judged to be good. On the other hand, if any one of the testing results is not good, the function test is ended at that stage without executing the next test.

Abstract: An image signal processing device for processing an image signal is arranged to temporarily store the image signal inputted and a reference signal generated, and, after that, to read out the signals stored. This arrangement enables the signal processing device to accurately add the reference signal to the image signal without deteriorating the reference signal.

Abstract: A test signal for enabling control of picture fidelity in a distribution system for distributing a video signal that has a vertical interval including a number of lines. The test signal comprises plural luminance levels for testing luminance linearity. The luminance levels have a non-linear level relationship with respect to one another. Each luminance level has a predetermined level. The test signal may additionally include a chrominance component for testing differential gain and phase. The chrominance component has a predetermined amplitude and a predetermined phase corresponding to flesh tone. In a method of enabling control of picture fidelity in a distribution system for distributing a video signal, the above test signal is provided at a source stage and is inserted into at least part of a selected line in the vertical interval of the video signal.

Abstract: Video processing arrangement including a host computer having a monitor, a video asset coupled to the computer for generating video signals and an interface for connecting the video asset to the computer to enable the display of video signals on the monitor. The video asset includes various primary elements including a primary composite video module for producing different types of a primary video signal and outputting the primary video signal via output channels, a stroke generator module for generating a stroke XYZ video signal and outputting the stroke video signal via output channels and a real time capture module for capturing video signals in a plurality of different modes. The video asset also includes a common distributed time base module for generating and distributing clock signals to all of the primary elements.