专利汇可以提供Method and apparatus for processing test signals which convey information as to gain and delay distortions of T.V. systems专利检索,专利查询,专利分析的服务。并且A modulated sine-squared test signal processing technique and an electronic apparatus are employed provide information as to the gain and delay distortions of T.V. broadcast systems, particularly the relative chrominance-to-luminance distortions of T.V. broadcast color transmission systems. A test signal, which is a modulated sine-squared pulse of a desired half-amplitude duration containing both a low-frequency component and the side bands of a carrier at or very near the color subcarrier frequency, is applied to a specially designed frequency-selective filter for separating the low-frequency component from the side bands. Then these separated sideband signals components are applied to two detector circuits, which together with associated low-pass filters, detect the positive and negative envelopes of the modulated side bands and linearly adds the low-frequency component to each envelope. The peak amplitude of the resulting waveform is the low-frequency component plus the positive envelope, and the baseline part of the waveform is the lowfrequency component plus the negative envelope, conveys all information contained in the test signal as to gain and delay distortions. This information is suitable for automated measurement, or it can be measured directly with a generalpurpose oscilloscope.,下面是Method and apparatus for processing test signals which convey information as to gain and delay distortions of T.V. systems专利的具体信息内容。
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