James R. “Jim” BoddiProgramable, a leading of single-chip Digital signal processorCanton, Ga, after a long illness. I died on 2 December at my home. IEEE senior members were 74 years old.

Working as an architect and designer AT and T Bell Laboratories Holmdel, in NJ, Boddie implemented its expertise signal processing Algorithm To develop a new type of semiconductor: DSP. Integrated Circuit, which Bell Labs Called DSP1, was declared in 1980 International Solid-State Circuit Conference ,ISSCCDSP1 became one of the first successful DSP of the industry.

Jim led the development of five later DSP generations, financially enabling many applications, for the first time from AT & T’s huge telephone switching system to Tiny Digital many hearing aids,

The gym was elevated to his contribution as his technological innovations along with the team leader. Bell Labs partner. He and IEEE Senior Member in 1988 Richard A. PaddersonA Codewector of DSP received IEEE Liebmann Award,

First digital signal processor

Jim was born in Talasi, a small town in Alabama. He obtained a bachelor’s degree Electrical engineering Of 1971 Oborn UniversityIn Alabama. Two years later after earning a master’s degree in EE MITHe is a Ph.D. In 1976, he received his doctorate and launched a one -year postdotoral fellowship at Bell Labs’ acoustic research department in Holmdel.

There he programmed a refrigerator-shaped DSP system to do real-time de-earrition in the program-room speakerphone and eliminate the echo.

During his association, he met IEEE Life Fellow Dan stanzioneA Bell Labs Group Supervisor, who recruited the company’s first DSP design team in 1977 to join him. Bell became the eighth president of the labs, Stanzionon said in an interview in 2015. Oral History Project of Computer History Museum His first meeting with Jim was “a lucky day for me.” Jim Bell arrived during the Labs’ days of pride, when algorithm experts, semiconductor experts, and system designers worked for a company, not more often below the hall from each other.

Prior to 1980, most signal processing applications were applied with analog components. Advanced algorithms such as low-detta-by-speech coding and speech recognition Was valid in digital domains Supercomputer The simulation and analog were very complex to apply with designs. In contrast, digital designs used racks of components beyond commercial viability. The dream of an inexpensive, high-demonstration digital signal processor seemed far away, as no DSP architecture would work for all algorithms. so Texas instruments And similar companies sold multiplier and register files such as universal digital building blocks.

The goal of Stanzione was to create a widely applied DSP that could change their department’s custom analog filter design. Over time, the team noted a specific filtering application: DTMF (dual-tone multiplication) signaling, which decoded the dial tone of the phone to the number dial to root the call. This will be deployed in sufficient quantity by new digital systems to justify the cost of developing DSP.

The team breadboard the filter and found that with a clever architecture, and 4.5-macron full-cold negative-channel metal-oxide semiconductor-The best process could meet the best process technology-way performance. Other related applications will be icing on the cake.

Jim contributed significantly to DSP1. At the forefront of them was the design of its novel arithmetic unit.

After the announcement of DSP1 in the 1980 ISSCC, it was not commercially available outside AT & T. However, it acquired the production of high-volume in the AT & T system, though.

The gym was promoted as the manager of the DSP Architecture Team in 1980 to determine the direction for later versions.

A leader and entrepreneur

The DSP1 was soon followed by the DSP2, in which the technology can be used to increase the range of more memory capacity and applications to meet the rapid performance and high-volume demand.

Parallel to the development of DSP2, the gym led a new architecture, DSP32, in which floating-point arithmetic was used. For Digital signal processingFloating-point arithmetic simplifies the work of maintaining accurate, a close-infinite burden in the most soughting algorithms.

Jim and his team announced the DSP32 in an ISSCC document of 1985, which received a best paper award.

Later, his team returned to the drawing board and developed DSP16, using fixed-point arithmetic. Declared in ISSCC of 1987, DSP16 became the world’s fastest DSP, a title that he maintained for many years.

In 1998, Jim left AT & T and found a DSP design center Starcore in Atlanta. It was funded by Agre systemWho acquired Bell Lab Microelectronics, MotorolaAnd later, InfineonStartup sponsors got special rights to include DSP designs of Stockore in their own IC products. Jim served as the Executive Director of Stockore until his retirement in 2006.

Starcore’s Architecture used a long instruction word architecture, which encoded several, independent operations in the same instruction to take advantage of equality in the DSP code.

In 2002, after Starcore’s first design was released, Wil Strauss, president of the market research firm Forward Concepts, said, “The new company’s business model and world -class technology represent a dramatic change in a combination of Prasad. Industry landscape,

Life after DSP

The gym was an early adoption of domestic computers, who was buying almost every model Apple sold. With Midi keyboardHe used computers for music synthesis as well as flying-simulation games. He was not only the simulator but also a fond of private aircraft.

He was a dedicated Ham radio Operator -Col NG2J- and participated in competitions. Field Day was his favorite. Annual weekend incident in June challenges Ham radio Enthusiasts worldwide to follow emergency situations and work in remote places to exchange fake emergency messages.

After retiring, the gym program Alamo’s 3D virtual tourA historical site in San Antonio. The program allows users to see the Spanish mission before any direction in both current and past. The tour launched in 2022 is available Alamo And online.

Today digital signal processing is widespread. Its algorithms and applications support is a fundamental requirement for almost all programables SemiconductorJim’s contribution to DSP technology will be remembered. Equally, we and hundreds of others will remember the gym for their kind of advice and clear vision.