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1.发明授权公开(公告)号：US09699446B2
公开(公告)日：2017-07-04
申请号：US12754583
申请日：2010-04-05
IPC分类号： H04N17/00
CPC分类号： H04N17/00
摘要： Embodiments of the invention include a test and measurement device, system, and method for synchronizing measurement views and configuration parameters across multiple input channels or devices. A method includes receiving signals under test associated with multiple input channels of the test and measurement instrument or with multiple devices, selecting a measurement view of one input signal or device, receiving a synchronized view enable preference from a user control interface, and synchronizing the measurement view or configuration parameters of the other signals or devices with what was chosen on the first signal or device. A test and measurement instrument includes input terminals to receive the input signals, a user control interface to receive input from an operator, a display to provide measurement information about the input signals, and a synchronization control unit to synchronize measurement views and/or configuration parameters between the inputs or devices.
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公开(公告)号：US4603346A
公开(公告)日：1986-07-29
申请号：US498793
申请日：1983-05-27
CPC分类号： H04N17/02
摘要： Signals suitable for displaying the phase relationship between the subcarrier wave and the horizontal sync pulse of a composite video signal are provided by establishing coincidence between the d.c. level of the 50 percent point of the sync pulse and the zero crossing point of the subcarrier wave, and generating a reference voltage level at the d.c. level of the 50 percent point of the sync pulse.
摘要翻译： 适用于显示复合视频信号的副载波和水平同步脉冲之间的相位关系的信号通过建立直流电平之间的一致性来提供。 同步脉冲的50％点和子载波波的过零点的电平，并在直流电压下产生参考电压电平。 电平为同步脉冲的50％。
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公开(公告)号：US5387925A
公开(公告)日：1995-02-07
申请号：US673167
申请日：1991-03-18
CPC分类号： H04N17/00
摘要： A test signal generator applies a test pattern to a device under test. The output of the device under test is displayed on a video picture monitor. The test signal generator inserts a cursor into the test pattern, the position of the cursor within the test pattern being variable. From the cursor the test signal generator also generates a trigger signal. The trigger signal may be used to trigger the horizontal sweep of a waveform display device to which the output of the device under device is input. By observing the picture monitor an operator may adjust the cursor to a position just prior to an anomaly in the displayed test pattern so that only that portion of the output waveform of the device under test in the vicinity of the cursor is displayed on the waveform display device.
摘要翻译： 测试信号发生器将测试图案应用于被测设备。 被测设备的输出显示在视频监视器上。 测试信号发生器将光标插入到测试模式中，测试模式中光标的位置是可变的。 从光标开始，测试信号发生器也产生一个触发信号。 触发信号可以用于触发输入装置的输出的波形显示装置的水平扫描。 通过观察图像监视器，操作者可以将光标调整到刚刚显示的测试图案中的异常之前的位置，使得仅在光标附近的被测设备的输出波形的那部分显示在波形显示器上 设备。
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4.发明申请TEST AND MEASUREMENT DEVICE, SYSTEM, AND METHOD FOR PROVIDING SYNCHRONIZED MEASUREMENT VIEWS 有权用于提供同步测量视图的测试和测量装置，系统和方法公开(公告)号：US20110242333A1
公开(公告)日：2011-10-06
申请号：US12754583
申请日：2010-04-05
IPC分类号： H04N17/00
CPC分类号： H04N17/00
摘要： Embodiments of the invention include a test and measurement device, system, and method for synchronizing measurement views and configuration parameters across multiple input channels or devices. A method includes receiving signals under test associated with multiple input channels of the test and measurement instrument or with multiple devices, selecting a measurement view of one input signal or device, receiving a synchronized view enable preference from a user control interface, and synchronizing the measurement view or configuration parameters of the other signals or devices with what was chosen on the first signal or device. A test and measurement instrument includes input terminals to receive the input signals, a user control interface to receive input from an operator, a display to provide measurement information about the input signals, and a synchronization control unit to synchronize measurement views and/or configuration parameters between the inputs or devices.
摘要翻译： 本发明的实施例包括用于在多个输入通道或设备上同步测量视图和配置参数的测试和测量设备，系统和方法。 一种方法包括接收与测试和测量仪器的多个输入通道相关联的测试信号或与多个设备接收，选择一个输入信号或设备的测量视图，从用户控制接口接收同步的视图使能偏好，并同步测量 在第一个信号或设备上选择的其他信号或设备的视图或配置参数。 测试和测量仪器包括用于接收输入信号的输入端子，用于接收来自操作者的输入的用户控制接口，用于提供关于输入信号的测量信息的显示器以及用于同步测量视图和/或配置参数的同步控制单元 在输入或设备之间。
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公开(公告)号：US4752927A
公开(公告)日：1988-06-21
申请号：US850000
申请日：1986-04-09
CPC分类号： H04N5/268
摘要： A synchronous changeover device detects both peak amplitude and pulse width, automatically switching between sets of signals without a noticeable glitch when a fault is detected. The signals of each set are peak detected and combined so that if any signal of a set falls below a predetermined value a FAIL signal is output to a switch timing and control circuit. The FAIL signal, together with the sync signals from the sets of signals, causes an electronic switch to switch from one set of inputs to another between sync pulses, resulting in a synchronous changeover. Further the signals are input to a start/stop counter via a multiplexer under control of a microprocessor. The counter counts the number of pulses of a reference signal between the start and stop of a selected signal pulse, and the microprocessor determines if the pulse width is within acceptable limits. Out of limits pulse widths cause the microprocessor also to generate the FAIL signal to automatically switch between sets of signals.
摘要翻译： 同步切换装置检测峰值幅度和脉冲宽度，当检测到故障时，自动切换信号组，而不会发生明显的毛刺。 每组的信号被峰值检测并组合，使得如果一个集合的任何信号低于预定值，则FAIL信号被输出到开关定时和控制电路。 FAIL信号以及来自该组信号的同步信号使电子开关在同步脉冲之间从一组输入切换到另一组，导致同步切换。 此外，在微处理器的控制下，信号通过多路复用器输入到启动/停止计数器。 计数器对所选信号脉冲的起始和停止之间的参考信号的脉冲数进行计数，并且微处理器确定脉冲宽度是否在可接受的限度内。 超出极限脉冲宽度会导致微处理器也产生FAIL信号，以在信号组之间自动切换。
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