Month of November 2001 - Page Number 1

Showing 1 - 10 of 290 from November 2001
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  1. 1.
    Multi-Channel digital communication systems employ multiple independent sub-channels, each of which is modulated to a unique sub-carrier frequency. Each of these sob-channel signals may contain embedded TDM pilots for channel magnitude and phase correction.
    IPCOM000006080D | Original Publication Date: 1991-Apr-01
  2. 2.
    Disclosed is a user-activated device which provides a simple method of turning a portable electronic device on and off without active controls, thereby also serving as a battery life enhancer. This device also eliminates the need for a user activated switch and eliminates the inherent reliability problems with user...
    IPCOM000006079D | Original Publication Date: 1991-Apr-01
  3. 3.
    A compact liquid to air heat exchanger (LAHE) system is used to cool semiconductor packages in small movable personal computers and workstations. Referring to FIG. 1, the compact LAHE system components consist of: (1) a compact liquid to air heat exchanger core (tube and shell, tube and fin or plate and fin), (2) a...
    IPCOM000006078D | Original Publication Date: 1991-Apr-01
  4. 4.
    Planarization of interlevel dielectrics is required for process flows which utilize anisotropic etching of the various layers of conductors. The vertical step formed by the anisotropic etch of an underlying layer and conformal coating of that layer with dielectric, can cause shorting bars in a subsequent conductor...
    IPCOM000006077D | Original Publication Date: 1991-Apr-01
  5. 5.
    Previously, complicated repeater/base hardware was required to make an interconnection or patch to the telephone system from a remote, half-duplex portable radio. This situation exposed the need for a simple, inexpensive method by which the small scale customer, the one with two or three talk-and-listen units, can...
    IPCOM000006076D | Original Publication Date: 1991-Apr-01
  6. 6.
    The manufacturing of organic based chip carriers (in specific, PCB material) is often done in reel to reel or strip form for the purpose of automated handling and processing. The cost and complexity of tooling required to excise these carriers from these strips needs to be minimized. A simple design method for...
    IPCOM000006075D | Original Publication Date: 1991-Apr-01
  7. 7.
    Many electronic products currently on the market require software to be programmed into the microprocessor on board in order to function. In addition many of these same products undergo extensive functional testing during the manufacturing cycle. Current testing and programming operations in the production of...
    IPCOM000006074D | Original Publication Date: 1991-Apr-01
  8. 8.
    CFC (Chlorofluorocarbon) solvents must be eliminated to prevent damage to the earth's ozone layer. Elimination of all solder fluxes from the soldering process eliminates the need to clean a soldered printed circuit board (PCB) with CFC solvents to prevent the possibility of leaving ionic contamination on the PCB. Thus...
    IPCOM000006073D | Original Publication Date: 1991-Apr-01
  9. 9.
    This invention is related to the method and apparatus to accomplish wide area paging. Currently there arc limited nation-wide paging services using one of a few dedicated nation-wide frequencies such as in the 900 MHz domestic paging allocation. A roaming pager simply monitors one frequency for messages targeted for...
    IPCOM000006072D | Original Publication Date: 1991-Apr-01
  10. 10.
    This publication is in defense of the ideas/methodologies/graylevel digital image processing techniques employed in the automatic visual interpretation and recognition task pertaining to "Optical Character Recognition". The term Character is defined as an alpha-numeric symbol, manufacturers logo, or any other...
    IPCOM000006071D | Original Publication Date: 1991-Apr-01