Radius Inc.
Radius Inc. was an American computer-hardware and multimedia company known for advanced Macintosh displays, accelerators, graphics products, video equipment, and later Mac-compatible systems and video-editing software.
Last updated August 26, 2026
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Overview
Radius Inc. was an American technology company founded in May 1986 by Burrell Smith, Mike Boich, Matt Carter, and Alain Rossmann, joined by other members of the original Macintosh development community, including Andy Hertzfeld. The company concentrated on extending the capabilities of Apple Macintosh computers through specialized hardware, displays, expansion cards, multimedia equipment, and software. Radius's first product, the Radius Full Page Display, helped establish the company as an innovator in professional Macintosh peripherals. It was among the early large-format displays for personal computers and supported a multiple-monitor coordinate space in which users could move windows between screens. Andy Hertzfeld wrote the display firmware, while Burrell Smith developed the hardware. The product anticipated features that Apple later incorporated into the Macintosh II platform. Radius also developed the Pivot Display, which could rotate between portrait and landscape orientations while remapping the menus, pointer, and screen drawing in real time. The company's subsequent products targeted performance-sensitive Macintosh users. Radius Accelerator cards added Motorola 68020 processors to earlier systems and were marketed as a major speed improvement. Its QuickColor and QuickCAD graphics products used dedicated processing to accelerate screen drawing and computer-aided-design workflows. Other product families included RadiusTV television tuners, VideoVision video-capture cards, PrecisionColor calibration products, Radius Rocket multiprocessor systems, and high-end display adapters and monitors. The company built a reputation for bringing workstation-style capabilities to Macintosh systems. Radius completed an initial public offering in June 1990. It later encountered strategic and financial pressure as several research projects failed, the Radius Rocket suffered from reliability and software problems, and the company struggled to define a sustainable position in a changing Macintosh market. Shareholder litigation also followed allegations that senior managers had traded company stock before the announcement of the first unprofitable quarter. Radius reduced its workforce and attempted to emphasize professional graphics while expanding into video production. During the 1990s, Radius pursued acquisitions and broader multimedia capabilities. It acquired VideoFusion, later bought SuperMac Technologies in a stock transaction, and obtained the Cinepak video-compression technology through that transaction. It also acquired Pipeline Digital and Reply Corporation. Radius entered the Macintosh-clone market in 1995 as the first licensed Macintosh clone vendor, selling systems such as the Radius System 100 and Radius 81/110. It later licensed the SuperMac name to Umax for Macintosh-compatible computers. The expansion-card business became more difficult after Apple Macintosh systems adopted PCI expansion slots in 1995. PC-oriented suppliers such as ATI and Matrox could use their much larger production volumes to compete on price, weakening the position of vendors focused primarily on Macintosh-specific cards. Radius increasingly emphasized digital video, introducing EditDV in 1997 as editing software associated with its FireWire products. EditDV received recognition as a leading video tool in 1998. In August 1998, Radius sold its monitor division and trademark to miro Displays, with assistance from Korea Data Systems. On January 6, 1999, the remaining company changed its name to Digital Origin and continued developing video-editing hardware and software, including EditDV. Media 100 acquired Digital Origin in 2002 in an all-stock transaction. The original Radius operating company therefore no longer exists as an independent brand, although its products, Cinepak technology, and contributions to Macintosh multimedia history remain associated with the company.
History
Radius Inc. emerged in 1986 from the Macintosh engineering and product community. Its founding group included Burrell Smith, an important early Macintosh hardware engineer, as well as Mike Boich, Matt Carter, and Alain Rossmann. Andy Hertzfeld and other former Macintosh contributors also participated in the company's early work. Radius's opportunity was created by the limitations of early Macintosh computers: users increasingly wanted larger displays, more processing power, professional graphics, and multimedia functions than Apple's standard systems provided. The first Radius product was the Radius Full Page Display. Designed for Macintosh Plus and Macintosh 512Ke systems, it offered a large working area and helped popularize the idea that multiple displays could share one desktop coordinate space. Users could move windows between screens rather than treating each display as an isolated environment. Hertzfeld wrote the firmware and Smith developed the hardware. Radius achieved approximately one million dollars in monthly sales during the product's first twelve months of shipment, according to the company's historical account. Radius then broadened its hardware portfolio. The Radius Accelerator added a Motorola 68020 processor to earlier Macintosh computers and was promoted as a substantial performance upgrade. The Pivot Display added a rotating screen format with live remapping of the user interface. Graphics products included QuickColor and QuickCAD, which used dedicated processing to accelerate display operations and computer-aided design. Radius also supplied RadiusTV television tuners, VideoVision capture products, PrecisionColor calibration equipment, Radius Rocket multiprocessor systems, video adapters, and professional monitors. The business was positioned at the high-performance end of the Macintosh accessory market. Radius completed an IPO in June 1990. By the early 1990s, however, the company was under pressure from unsuccessful research projects, the problematic Radius Rocket, and a lack of clear market focus. The company also faced shareholder lawsuits alleging insider trading by senior managers before disclosure of its first unprofitable quarter. After layoffs in 1993, management sought to preserve its professional-graphics business while building a stronger video operation. Radius acquired VideoFusion and considered opportunities in professional video software, but did not pursue After Effects when it had the opportunity to partner with or acquire the product's developer. The company then adopted an acquisition-led multimedia strategy. In August 1994, it purchased SuperMac Technologies in a stock swap worth approximately $80.5 million. SuperMac brought the Cinepak video-compression codec, which became widely used in digital-video distribution and remained supported by many encoders and media players into the early 2000s. Radius subsequently acquired Pipeline Digital, adding professional time-code and videotape-deck-control software. The arrival of PCI-based Macintosh systems in 1995 weakened the position of Macintosh-only expansion-card companies. PC expansion-card manufacturers could adapt their products to the Mac platform while benefiting from much larger production volumes and lower costs. Radius responded by entering the licensed Macintosh-clone market in March 1995. It introduced the Radius System 100 and Radius 81/110, and later licensed the SuperMac name to Umax for its Mac OS clones. Radius continued its video emphasis with EditDV, introduced in 1997 for use with the company's FireWire cards. The product was later recognized as a leading video tool. In the same year Radius acquired Reply Corporation, a maker of aftermarket motherboards and x86 compatibility cards for Macintosh computers. The company sold its monitor division and trademark to miro Displays in August 1998, with financing or support from Korea Data Systems. On January 6, 1999, Radius changed its corporate name to Digital Origin and concentrated on video-editing hardware and software. Media 100 acquired Digital Origin in 2002 in an approximately $83 million stock transaction, ending Radius's existence as an independent operating company.
- 2002
Acquired by Media 100
[1]Media 100 acquired Digital Origin in an all-stock transaction.
- 1999
Corporate name changed to Digital Origin
[1]Radius formally changed its name and focused on digital video-editing products.
- 1998
Monitor business divested
[1]miro Displays acquired Radius's monitor division and trademark.
- 1997
EditDV and Reply Corporation acquisition
[1]Radius introduced EditDV and acquired Reply Corporation.
- 1995
Licensed Macintosh clones introduced
[1]Radius became the first licensed Macintosh clone vendor and launched two Macintosh-compatible systems.
- 1994
SuperMac Technologies acquisition
[1]Radius acquired SuperMac, gaining the Cinepak video-compression technology and moving into the acquired company's facility.
- 1990
Initial public offering
[1]Radius completed its IPO in June.
- 1986
Radius is founded
[1]Radius Inc. was founded in May by Burrell Smith, Mike Boich, Matt Carter, Alain Rossmann, and other members of the original Macintosh community.
- 1986
Radius Full Page Display reaches the market
[1]The company's first product provided a large-format Macintosh display and a shared coordinate space for multiple screens.
Products and positioning
A specialist professional-graphics and multimedia brand that expanded Macintosh capabilities through premium displays, dedicated acceleration, video hardware, and digital production software.
Display · 1986
Radius Full Page Display
Radius's first product was a large-format display for the Macintosh Plus and Macintosh 512Ke. It supported a shared desktop coordinate space across multiple screens, allowing users to drag windows between displays. The product helped establish Radius as a specialist in professional Macintosh visualization and anticipated later multi-display behavior associated with Apple's Macintosh II.
Display
Radius Pivot Display
The Pivot Display was a full-page monitor that could rotate between landscape and portrait orientations. Its system software remapped menus, pointer behavior, and screen drawing in real time, making it suitable for page layout, publishing, and other applications where portrait-oriented work areas were useful.
Processor upgrade
Radius Accelerator
The Radius Accelerator was an add-on card that brought a Motorola 68020 processor to earlier Macintosh systems. It was marketed as a major performance improvement, allowing owners of existing machines to obtain substantially faster processing without replacing the entire computer.
Graphics accelerator
QuickColor
QuickColor was a graphics accelerator designed to work with Radius display hardware. It used an ARM2-based processor and block-transfer techniques to improve framebuffer access and accelerate selected QuickDraw operations, reducing dependence on repeated transfers over the Macintosh NuBus.
Graphics and CAD accelerator
QuickCAD
QuickCAD extended the concepts of QuickColor for computer-aided design. It was described as supporting display-list processing in a manner comparable to graphics coprocessors used on IBM-compatible systems, targeting demanding technical and design workflows.
Multiprocessor Macintosh system
Radius Rocket
Radius Rocket was a multiprocessor platform intended for demanding applications such as 3D rendering and running multiple operating-system sessions. The product became associated with reliability and software problems that contributed to the company's difficulties in the early 1990s.
Video capture
VideoVision
VideoVision was a family of video-capture products aimed at bringing professional and production-oriented video input to Macintosh systems.
Video compression codec · 1994
Cinepak
Radius obtained Cinepak through its acquisition of SuperMac Technologies. The codec became a widely used technology for compressing digital video and was supported by many encoders and media players during the early expansion of desktop multimedia.
Video-editing software · 1997
EditDV
EditDV was digital video-editing software introduced in 1997 in conjunction with Radius FireWire cards. It represented the company's shift from Macintosh expansion hardware toward integrated digital-video production tools and was recognized as a leading video tool in 1998.
Controversies
1992
Shareholder insider-trading allegations
Radius faced multiple shareholder lawsuits alleging that senior managers engaged in extensive insider trading during the weeks before the company announced its first unprofitable quarter. The allegations appeared amid broader criticism of failed development projects, the troubled Radius Rocket, and weak strategic focus.
Marketing campaigns
- 1997EditDV video-production push
United States · Professional Macintosh market
Radius positioned EditDV and its FireWire cards as an integrated solution for desktop digital-video editing.
Outcome. EditDV received recognition as a leading video tool in 1998, while Radius subsequently reorganized around the Digital Origin name.
- 1995Licensed Macintosh clone launch
United States
Radius promoted the System 100 and Radius 81/110 as licensed Macintosh-compatible systems, extending the company's role from peripheral supplier into complete computer systems.
Outcome. The initiative broadened Radius's product scope, but the Macintosh-clone market remained difficult and the company later licensed the SuperMac name to Umax.
Brand decisions
2002
Sell Digital Origin to Media 100M&ABackground
Following the transition to Digital Origin and a concentration on video technology, the company became an acquisition target in the professional-video market.
Action taken
Media 100 acquired Digital Origin in an all-stock deal valued at approximately $83 million.
Aftermath
Radius's successor ceased operating as an independent company.
Transaction value. $83 million (2002)
1999
Rename the company Digital OriginStrategyBackground
Radius had increasingly shifted from Macintosh peripheral hardware toward video-editing products.
Action taken
On January 6, 1999, the company changed its name to Digital Origin and continued making video-editing hardware and software.
Aftermath
The Radius corporate identity ended, although products such as EditDV continued under the successor business until its acquisition by Media 100.
1998
Divest the monitor division and trademarkM&ABackground
Radius was narrowing its focus as competition intensified in Macintosh hardware and the company emphasized video production.
Action taken
The monitor division and Radius trademark were acquired by miro Displays with assistance from Korea Data Systems.
Aftermath
The Radius name continued on CRT and LCD monitors under new ownership, while the remaining business moved toward digital video.
1995
Enter the licensed Macintosh-clone marketStrategyBackground
The transition to PCI-based Macintosh computers threatened suppliers whose products were designed exclusively for older Macintosh expansion architectures.
Action taken
Radius became the first licensed Macintosh clone vendor and introduced the Radius System 100 and Radius 81/110.
Aftermath
The move expanded Radius beyond peripherals, while the company later licensed the SuperMac name to Umax for its Mac OS clones.
1994
Acquire SuperMac TechnologiesM&ABackground
Radius wanted to strengthen its position in Macintosh graphics and professional video while expanding its technology portfolio.
Action taken
Radius acquired rival SuperMac Technologies in an approximately $80.5 million stock-swap agreement.
Aftermath
The transaction brought Cinepak to Radius and shifted the company's headquarters into SuperMac's building.
Transaction value. $80.5 million (August 1994)
1993
Refocus on professional graphics and videoStrategyBackground
After layoffs and a difficult operating period, Radius sought to preserve its professional-graphics business while building a stronger position in video production.
Action taken
The company pursued video-related acquisitions, including VideoFusion, and evaluated opportunities in professional video software.
Aftermath
The strategy led Radius toward acquisitions such as SuperMac and Pipeline Digital and ultimately toward the Digital Origin identity.
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