公开(公告)号：US3710056A

公开(公告)日：1973-01-09

申请号：US3710056D

申请日：1970-05-21

Applicant: NIPPON ELECTRIC CO

Inventor： TOMOZAWA A

IPC: H04J3/06 ,  H04J3/12

CPC classification number: H04J3/12 ,  H04J3/06

Abstract: In a time-division multiplex delta-modulation communication system, a frame of the multiplexed signal is composed of a plurality of subframes larger in number than the multiplexed transmission channels by at least one and defined by control bits, one of which is allotted to frame synchronization and the remainder of which are allotted to channel monitoring and the like. A respective one of the control bits is transmitted every frame period while the respective channel information is transmitted every subframe period.

Abstract translation: 在时分复用增量调制通信系统中，多路复用信号的帧由至少一个数量多于多路复用传输信道的多个子帧组成，并由控制位定义，其中一个被分配给帧 同步，其余部分分配给信道监控等。 每个帧周期发送各个控制位，而每个子帧周期发送各个信道信息。

公开(公告)号：US3766542A

公开(公告)日：1973-10-16

申请号：US3766542D

申请日：1971-06-15

Applicant: NIPPON ELECTRIC CO

Inventor： TOMOZAWA A

IPC: H03M7/32 ,  H03M7/00 ,  H03K13/24

CPC classification number: H03M7/3048

Abstract: Disclosed herein is a code conversion system for converting, in the digital phase, a prediction type first code to a lower frequency, prediction type second code approximating the information content of the first code. In a first embodiment, an input delta modulation code is converted to a lower frequency output delta modulation code, while in a second embodiment, an input delta modulation code is converted to a lower frequency companding delta modulation code.

Abstract translation: 这里公开了一种代码转换系统，用于在数字相位中将预测类型的第一代码转换为较低频率，预测类型的第二代码近似于第一代码的信息内容。 在第一实施例中，输入增量调制码被转换为较低频率输出增量调制码，而在第二实施例中，输入增量调制码被转换为较低频率压扩增量调制码。

公开(公告)号：US3737780A

公开(公告)日：1973-06-05

申请号：US3737780D

申请日：1971-05-04

Applicant: NIPPON ELECTRIC CO

Inventor： TOMOZAWA A

IPC: H03M7/32 ,  H03M7/00 ,  H04B1/00

CPC classification number: H03M7/3048

Abstract: A digital communication system reduces the transmission speed required to propagate signals resulting from a unity bit per sample coding process, e.g., delta modulation or delta-sigma modulation. The modulation wave pulses produced during cyclically recurring code converting intervals are counted and the count state transmitted rather than the modulation signal per se, thereby reducing the signal rate impressed on the communication channel. An inverse procedure is employed for signal recovery.

Abstract translation: 数字通信系统降低传播由每个样本编码处理的单位比特产生的信号所需的传输速度，例如增量调制或Δ-Σ调制。 在循环重复码转换间隔期间产生的调制波脉冲被计数，并且发送计数状态而不是调制信号本身，从而降低了施加在通信信道上的信号速率。 信号恢复采用逆过程。