- technology discovered here
Search Technologies Technology Needs
Browse Technologies
Browse Technology Needs corporate web site
 Tech of the Week
Each week we feature special technologies. Take a moment to view the other Tech of the Week articles, you may find one that meets a present need.
Easily removed anti-oxidation coating for semiconductor wafers allows cleaned wafers to wait between steps for 48 hours or more
Enhanced thermal conductivity and control over thermal isotropy for circuit boards, films, and other polymeric materials used in electronic components
High-capacity, lightweight carbon nanostructures for vehicle and fuel cell use store more hydrogen per unit weight than other methods
High-speed spin-printing alternative to conductive ink-jet or photoresist printing uses functional particles in UHMW matrix
Lightweight, moisture-permeable protective garments substantially impenetrable to hazardous chemical and biological agents
Log 5 antimicrobial hydrogels for hard surfaces, skin creams, and hand sanitizers produces no dermal irritation
Nanometer-scale filter with pore sizes of 10-50nm for syringe, gas, virus filtration
Oracle database performance analysis software replaces manual methods and streamlines execution
Platform system for greenhouse maintenance and repair also applicable to architecture such as glass atria and similar fragile-walled structures
Printable polymeric optical wave guides and light amplifiers offer order-of-magnitude cost savings over micromachining
Simplified route to large volumes of linear alkyl benzenes as precursors to surfactants
Unprecedented moisture-sensitive, color-changing inks for wovens, non-wovens, packaging, and other surfaces
Tech of the Week is special. Click View Listing Details to see the full information on this technology -- even if you're not already a member.
To take full advantage of, Become a Member.
 Archive List
Cholesteric liquid crystal film with excellent half-transparent property and vivid color for display, lighting, and functional ink applications
Portfolio of technologies for comfortable, easy-to-use hearing protection that can increase compliance
Modified fullerenes for electronic assemblies and fuel cells
High-tensile and tear strength nonwoven fabric for packaging and sheet applications
Ultra-low-wear polymer composites for bearing surfaces reduces expense, avoids contamination, reduces weight
More articles...
 Tech of the Week

Semiconductor-Based Digital Data Storage Device Eliminates Moving Parts


Since Edison invented the gramophone, all recording and playback devices have required the same things: a recording medium and a device on which to play it. From vinyl records to eight-tracks to CDs, the principle has remained the same for over one hundred years -- an electromechanical device transfers data to a medium (cylinder, record, tape, floppy disk, or CD) which is then "read" with an electromechanical or optical device integrated with a moving transport system (turntable, tape capstan, and so forth).

The problem with these traditional devices is that they all incorporate moving components and, for the most part, physical contact between the medium and the playback system to recover the data, causing wear and tear over time. The result is increased maintenance costs as well as a loss of data integrity and playback quality as pickups, motors, and drive units wear out and become misaligned. Even CD players, with their optical pick-ups and lack of contact between the medium and the playback unit, require precise movements from several components that eventually succumb to repeated use.>

The use of moving parts has also placed constraints on the design and manufacture of these devices. For example, digital audio tape (DAT) systems require complex electronic servo control components to coordinate all their moving parts to maximize data transfer rates and maintain data integrity -- critical for data backup systems. Even simple CD players need a certain amount of space to house motor-driven spindle/turntable mechanisms that spin the disk past the optical pickup. All of this affects product size, complexity, and cost.

Further complications arise from vibration, shock, and playback position which affect the ability of devices such as CD-ROM players to operate, often causing them to shut down altogether. Even seemingly harmless things such as dust can damage playback surfaces -- tape heads, for example -- and degrade media.

Samsung has tackled these digital record and playback problems with a new technology that encompasses data recording and storage, record/playback, and playback only. All three systems use a combination of semiconductors, including Electronically Erasable Programmable Read Only Memory (EEPROM), read-only-memory (ROM) and random-access-memory (RAM). When integrated with digital signal processors (DSPs), digital-to-analog (D/A) converters, and computers, a new generation of record-and-playback devices is created with no moving parts and almost unlimited data capacity.

HereĀ“s how it works:

For recording and storage, the system incorporates an EEPROM, a memory interface unit, and a RAM. To record data, a microcomputer tells a DSP to take data from the RAM and writes it to the EEPROM. To store the data, the DSP takes it from the EEPROM and sends it to the RAM. A RAM controller then reads the data from the RAM to the main computer via a SCSI interface.

For playback only (think MP3 players), a microcomputer instructs a DSP to take the digital information (for example, digital audio) from a ROM, then uses a D/A converter to create an analog output signal which it sends to an output terminal (headphones, for example) for playback.

To record and playback data (once again, digital audio), a microcomputer tells a DSP to take the data from a ROM, then uses a D/A converter to create either an analog input signal which gets recorded to an EEPROM or an analog output signal for playback through an output terminal.

With this semiconductor-based technology, design and manufacturing costs are reduced significantly and capacity increased dramatically over conventional media. Because all these devices have no moving parts and require no outside data medium, product designers using this technology have virtually unlimited options for system size and functionality.

Want to see more? Tech of the Week is special. Click View Listing Details to see the full information on this technology -- even if you're not already a member.
Want to know more? will confidentially pass your question along to the provider of this technology and get back to you with an answer if it is available. This service is free. Ask the owner a question
Like an introduction? Deal directly with the licensing contact for this technology. You´ll need to provide some minimal information. This service is confidential and free of charge unless noted. Request an introduction
Send an email to a friend or colleague that contains a link to this technology. Email this listing to a friend
Boston, MA, USA       Liverpool, United Kingdom       Tokyo, Japan                  
Find a Technology |  List a Technology |  Insight |  Using this Site |  About Us |  Home |  Customer Support |  Help
Privacy Statement   |   Terms of Use Agreement   |   Technology Abstracts
Copyright © 1999-2015 by, Inc. All Rights Reserved.