专利汇可以提供Apparatus for producing ramp signals and an intensity control signal in response to digital data, particularly for a crt vector generator专利检索,专利查询,专利分析的服务。并且A vector generator is described operating on a constant writing speed basis for larger vectors and on a constant time basis for small vectors. The generator utilizes X,Y. Delta X, Delta Y and Delta Max digital data, Delta Max being the greater in magnitude of Delta X and Delta Y. A feedback control amplifier supplied with a constant input signal has two feedback loops. One loop includes a D/A attenuator supplied with Delta Max and the other includes a bias source which limits the output to a predetermined value for small values of Delta Max. The output of the D/A attenuator is used to produce an intensity control signal which varies with vector length in the region where limiting takes place. The control amplifier output is fed to a difference amplifier having a transistor-controlled feedback circuit to produce a current accurately proportional to the control amplifier output, and another transistor having an input circuit like that of the feedback transistor and supplied with the same input supplies charging current to a ramp capacitor. The ramp signal is compared with a reference to produce a ramp stop signal. Ramp start and stop signals are delayed and gate the intensity control signal, and the delayed stop signal is used to terminate the ramp rise. The ramp signals are supplied to D/A amplifiers controlled by the Delta X and Delta Y digital data to produce CRT deflection waves.,下面是Apparatus for producing ramp signals and an intensity control signal in response to digital data, particularly for a crt vector generator专利的具体信息内容。
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