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    • 2. 发明授权
    • Level-shift type digital to analog converter
    • 电平转换型数模转换器
    • US5745065A
    • 1998-04-28
    • US826694
    • 1997-04-07
    • Rong-Tyan Wu
    • Rong-Tyan Wu
    • H03M1/68H03M1/76H03M1/66
    • H03M1/68H03M1/765
    • This present invention relates to a level-shift type digital to analog converter including a selection circuit, a multiple voltage level generation circuit, a stabilization circuit and a level-shift type buffer stage circuit. The multiple voltage level generation circuit is composed by a divided-step voltage output circuit and a level voltage output circuit, for generating a plurality of voltage levels to directly output to a level-shift type buffer stage circuit or alternatively, to be processed through voltage selection in order to respectively output the divided-step voltage output values and the level voltage output values to a level-shift type buffer stage circuit. A stabilization circuit generates a reference voltage or a reference current insensitive to the power supply voltage V.sub.DD for other elements of the converter. Finally, the level-shift type buffer stage circuit synthesizes the received divided-step voltage and the level voltage, amplifies them with appropriate times and finally converts them to analog output signals.
    • 本发明涉及包括选择电路,多电压电平发生电路,稳定电路和电平移位型缓冲级电路的电平移位型数模转换器。 多电压电平生成电路由分压电压输出电路和电平电压输出电路构成,用于产生多个电压电平,以直接输出到电平移位型缓冲级电路,或者通过电压进行处理 选择以将分压电压输出值和电平电压输出值分别输出到电平移位型缓冲级电路。 稳定电路产生对转换器的其它元件的电源电压VDD不敏感的参考电压或参考电流。 最后,电平移位型缓冲级电路合成接收到的分步电压和电平电压,用适当的时间放大,最后将它们转换为模拟输出信号。
    • 4. 发明授权
    • Waveform-generating apparatus
    • 波形发生装置
    • US5714954A
    • 1998-02-03
    • US574393
    • 1995-12-18
    • Herman ChungRong-Tyan Wu
    • Herman ChungRong-Tyan Wu
    • G06F1/03H03M1/66
    • G06F1/0321
    • A cost effective waveform-generating apparatus that generates accurate and precise waveforms is disclosed. The present waveform-generating apparatus includes a memory for storing a sequence of sampled amplitudes of a waveform, said sampled amplitudes constituting at least two periods of said waveform; a counting circuit, electrically connected to the memory, responsive to a clock signal for generating counting signals; a controlling circuit, electrically connected to the memory and the counting circuit, responsive to the counting signals for controlling the memory to output the sampled amplitudes recurrently; and a digital to analog converter, electrically connected to the memory, for converting the recurrent sampled amplitudes into an analog output.
    • 公开了一种产生精确和精确波形的成本有效的波形发生装置。 本波形生成装置包括:存储器,用于存储波形的采样振幅序列;所述采样振幅构成所述波形的至少两个周期; 计数电路,电连接到存储器,响应于用于产生计数信号的时钟信号; 控制电路,电连接到存储器和计数电路,响应于用于控制存储器的计数信号以循环地输出采样的幅度; 以及电连接到存储器的数模转换器,用于将复现的采样幅度转换为模拟输出。
    • 5. 发明授权
    • Methods and devices for generating cycled waveforms of nonsingle period
    • 用于产生非单调周期的循环波形的方法和装置
    • US5883530A
    • 1999-03-16
    • US786730
    • 1997-01-27
    • Rong-Tyan Wu
    • Rong-Tyan Wu
    • G06F1/03H03B28/00H03B21/00
    • H03B28/00G06F1/0321
    • The present invention relates to methods and devices for generating cycled waveforms of nonsingle period, and more particularly to an improvement from the one-way counter used by conventional cycled waveform generator of nonsingle period into an up-down counter or a programmable up-down counter, along with an adder/subtracter. Thus, only the varied values in waveform relative to a DC level have to be filled into a table, and then the varied values in waveform (i.e. the digital waveform sampling values) are input into said adder/subtracter to obtain a periodic digital values by adding/subtracting with a predetermined DC level. Finally, cycled waveforms of nonsingle period are obtained by digital-to-analog converting of said digital values. With the methods and devices of the present invention, not only the fillings in said table can be decreased to reduce the cost, but also the DC output level can be fixed or adjusted arbitrarily for convenient signal processing.
    • 本发明涉及用于产生非单一周期的循环波形的方法和装置,更具体地说,涉及一种从单个周期的常规循环波形发生器用于上行计数器或可编程升降计数器的单向计数器的改进 ,以及加法器/减法器。 因此,只有相对于直流电平的波形中的变化值必须填充到表中,然后将波形中的变化值(即,数字波形采样值)输入到所述加法器/减法器中以通过以下方式获得周期数字值: 以预定的DC电平加/减。 最后,通过所述数字值的数模转换来获得非单一周期的循环波形。 利用本发明的方法和装置,不仅可以减少表中的填充以降低成本,而且可以任意地固定或调整DC输出电平,以方便信号处理。
    • 7. 发明授权
    • Multi-function telephone dialer display
    • 多功能电话拨号器显示
    • US5835581A
    • 1998-11-10
    • US717496
    • 1996-09-20
    • Rong-Tyan WuChern-Jsair Chang
    • Rong-Tyan WuChern-Jsair Chang
    • H04M1/57
    • H04M1/573
    • A multi-function telephone dialer display device which is equipped with a display screen for displaying the use status and the caller identification information, and a dialer for responding to data input and for generating a data signal to the display screen to display the corresponding use status. When dialing with numerical keys, with standard non-numerical keys or when setting up a function, the data signal is coded into a numerical code representing the original digit, coded into a standard non-numerical code representing the original non-numerical keys or coded into a function key code representing the function, respectively. A display driver is electrically connected to the display screen, to the telephone dialer and to a caller data signal line for receiving and processing the data signals, the timing signals and the identification signal representing the caller information, and then transferring the result of the processing to the display screen for displaying a corresponding status and caller identification information.
    • 一种多功能电话拨号显示装置,其具有用于显示使用状态和呼叫者识别信息的显示屏幕,以及用于响应于数据输入并用于向显示屏幕产生数据信号以显示相应使用状态的拨号器 。 当用数字键拨号时,使用标准非数字键或设置功能时,数据信号被编码成代表原始数字的数字代码,被编码成表示原始非数字键或编码的标准非数字代码 分别代表表示功能的功能键代码。 显示驱动器电连接到显示屏,电话拨号器和用于接收和处理数据信号的呼叫者数据信号线,定时信号和表示呼叫者信息的识别信号,然后传送处理结果 到用于显示相应状态和呼叫者识别信息的显示屏幕。
    • 8. 发明授权
    • Display control device allowing information transmission to both display
and dialer
    • 显示控制设备允许信息传输到显示和拨号
    • US5825859A
    • 1998-10-20
    • US508139
    • 1995-07-27
    • Chi-Yung WuRong-Tyan Wu
    • Chi-Yung WuRong-Tyan Wu
    • G06F3/147H04M1/57H04M15/00H04M1/00
    • G06F3/147H04M1/57
    • The present invention is related to a display control device adapted to be used in a communication apparatus providing an information for transmitting the information to a display and transmitting the information to a second device when the information is required by the second device, which includes a buffer device storing therein the information, a decoder electrically connected to the buffer device for decoding the information stored in the buffer device and outputting the decoded information to the display, a bidirectional transmission device electrically connected to the buffer device for transmitting the information to the display and transmitting the information to the second device when the information is required by the second device, and a controller electrically connected to the bidirectional transmission device for controlling a transmission between the bidirectional transmission device and the second device. The present invention receives information and transmits received information to a display and/or another circuit through a simple structure.
    • 本发明涉及一种显示控制装置,其适于在通信装置中使用,该通信装置提供用于将信息发送到显示器的信息,并且当第二装置需要该信息时将该信息发送到第二装置,该第二装置包括缓冲器 在其中存储信息的装置,电连接到缓冲装置的解码器,用于解码存储在缓冲装置中的信息并将解码的信息输出到显示器;双向传输装置,电连接到缓冲装置,用于将信息发送到显示器; 当所述第二设备需要所述信息时,将所述信息发送到所述第二设备;以及控制器,电连接到所述双向传输设备,用于控制所述双向传输设备和所述第二设备之间的传输。 本发明通过简单的结构接收信息并将接收的信息发送到显示器和/或另一电路。