公开(公告)号：US5598430A

公开(公告)日：1997-01-28

申请号：US359384

申请日：1994-12-20

申请人： Yumi Hachisuka ,  Kiyoshi Tanaka

发明人： Yumi Hachisuka ,  Kiyoshi Tanaka

IPC分类号： H03J7/18 ,  H04B1/16 ,  H04B1/26 ,  H04B1/40 ,  H04L27/00 ,  H04L25/00

CPC分类号： H04L27/0012 ,  H04B1/26 ,  H04L27/0008 ,  H04B1/406

摘要： An analog/digital receiver comprises a noise detecting circuit for checking whether a noise component, output from an analog signal detecting means, is not less than a specified value, and an RSSI detecting circuit for checking whether received signal strength, output from the receiver, is not less than a specified value. A discriminating circuit is included for making a determination as to whether the received input is an analog modulation signal or a digital modulation signal according to the result of the determination made by the noise detecting circuit as well as by the RSSI detecting circuit. A select switch selects the output from either the digital signal detecting circuit or the analog signal detecting circuit.

摘要翻译： 模拟/数字接收机包括：噪声检测电路，用于检查从模拟信号检测装置输出的噪声分量是否不小于指定值;以及RSSI检测电路，用于检查从接收机输出的接收信号强度， 不小于指定值。 包括鉴别电路，用于根据由噪声检测电路以及由RSSI检测电路确定的结果确定接收到的输入是模拟调制信号还是数字调制信号。 选择开关选择数字信号检测电路或模拟信号检测电路的输出。

公开(公告)号：US5574994A

公开(公告)日：1996-11-12

申请号：US379810

申请日：1995-01-27

申请人： Ping Huang ,  Yumi Hachisuka ,  Kiyoshi Tanaka

发明人： Ping Huang ,  Yumi Hachisuka ,  Kiyoshi Tanaka

IPC分类号： H04J11/00 ,  H01Q3/26 ,  H04B1/04 ,  H04L27/00 ,  H01Q11/12

CPC分类号： H01Q3/26

摘要： A method of suppressing generation of carrier leak in a transmitter and reducing deterioration of communication quality comprises the steps of outputting DC elements (I, Q) from a DSP gradually changing the voltage values, measuring a sum of the DC elements (.DELTA.I.sub.DC, .DELTA.Q.sub.DC) and DC elements (I, Q), storing the DC elements (I, Q), when the above sum is equal to a specified value (herein, 0 V), as DC elements -.DELTA.I.sub.DC, -.DELTA.Q.sub.DC for correction, and correcting the DC elements (I.sub.DC, Q.sub.DC) (DC elements obtained by amplifying DC elements for (I, Q) channels demodulated by a quadrature demodulator during transmission) using the DC elements (-.DELTA.I.sub.DC, -.DELTA.Q.sub.DC) for correction during transmission.

摘要翻译： 一种抑制发送器中的载波泄漏的产生并减少通信质量恶化的方法包括以下步骤：从DSP逐渐改变电压值输出DC元件（I，Q），测量直流元件的总和（DELTA IDC，DELTA QDC）和DC元件（I，Q），当上述和等于指定值（这里为0V）时，存储DC元件（I，Q）作为DC元件-DDTA IDC，DELTA QDC用于校正， 并且通过使用DC元件（-TATA IDC，-TATAQDC）来校正DC元件（IDC，QDC）（通过在发送期间由正交解调器解调的（I，Q）信道的DC元件）获得的DC元件） 。