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半导体里程_博物馆_1979 单芯片数字信号处理器出现
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贝尔实验室的单芯片DSP-1数字信号处理器设备构架进行了优化,为电子交换系统。
为了能从背景噪声中分离出信息，数字信号处理器（DSP）采用了数学技术来分析来自自然和电子源的模拟信号。转换成数字信号之后，如快速傅立叶变换等算法筛选和重建准备一个可用的模拟信号转换回数据。在音响，通信，图像，雷达，声纳，语音识别系统中，已经实施了DSP功能从电子管到集成电路的每一代技术。
在1970年，来自Fairchild公司（9334）和AMD公司（2505）的2*4乘法器作为第一代标准IC产品，加快了数学密集型信号处理运算。TRW公司的LSI产品采用三重扩散双极工艺，建立了更复杂的功能，如AMD2901位片在20世纪70年代后期的视频和国防应用的处理器一起使用的16x16乘法器（MPY16）。MOS外围芯片允许信号处理使用通用的微处理器，包括用于摩托罗拉6800和英特尔2920（1979）的AMI S2811（1978），并结合了可编程的数字信号处理和数据转换电路（1968年里程碑）。
单芯片DSP本质上是添加了复杂的数学能力的微处理器。贝尔实验室的单芯片DSP-1，AT＆T的ESS数字交换机的重要组成部分，诞生于1979年5月。NEC的定点μPD7720，在1980年应用于语音频带，是商业上最成功的早期的DSP之一。TI的16位可编程DSP器件的TMS320系列从1983年开始应用于消费类产品中，从手机到玩具。从TI的集成度更高的DSP的连续几代以及ADI公司，摩托罗拉，和别人的权力今天的手机，磁盘驱动器，HDTV产品。
图一：1979年贝尔实验室的DSP-1设备布局
图二：：1979年TRW公司的高速乘法累加器的广告
图三：：第一的TMS320可编程DSP器件的芯片的图片
图四：：“电子设计”杂志关于DSP的专题文章
译者：哈尔滨工业大学（威海）电子封装 090840226-王延博
校对：哈尔滨工业大学（威海）电子封装 090840216-鞠伯伦
http://www.computerhistory.org/semiconductor/timeline/1979-DSP.html
版权 copyright by www.computerhistory.org 原文
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1979 - Single Chip Digital Signal Processor Introduced
Bell Labs' single-chip DSP-1 Digital Signal Processor device architecture is optimized for electronic switching systems.
Digital signal processing (DSP) applies mathematical techniques to analyze analog signals from natural and electronic sources in order to separate information from background noise. After conversion to digital form, algorithms such as the Fast Fourier Transform filter and reconstruct the data ready for conversion back to a useable analog signal. DSP capability has been implemented in every generation of technology from vacuum tubes to ICs in audio, communications, image, radar, sonar, and voice recognition systems.
2 x 4 multipliers from Fairchild (9334) and AMD (2505) in 1970 were among the first standard IC products to speed math-intensive signal-processing algorithms. TRW LSI Products used a triple-diffused bipolar process to build more complex functions, such as the 16x16 multiplier (MPY 16), used together with the AMD 2901 bit-slice processor for video and defense applications in the late-1970s. MOS peripheral chips to enable signal processing using general-purpose MPUs included the AMI S2811 (1978) for the Motorola 6800 and Intel’s 2920 (1979) that combined programmable digital processing and data conversion (1968 Milestone) circuits.
Single-chip DSPs are essentially MPUs with added complex math capabilities. Bell Labs’ one-chip DSP-1, a key component of AT&T's ESS digital switch, appeared in May 1979. NEC's fixed-point 倀D7720, introduced in 1980 for voiceband applications, was one of the most commercially successful early DSPs. TI’s TMS 320 family of 16-bit programmable DSP devices from 1983 found wide application in consumer products from cell phones to toys. Successive generations of more highly integrated DSPs from TI as well as Analog Devices, Motorola, and others power today's mobile phones, disk drives, and HDTV products.
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