Month of March 2002 - Page Number 4

Showing 31 - 40 of 302 from March 2002
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  1. 31.
    In recent years, there has been a significant increase in the demand for semiconductor suppliers to provide bare (unpackaged) die to assembly houses for attachment to multichip modules and directly to organic carriers (printed circuit boards). This require- ment is drawing a critical need for till hmctional electrical...
    IPCOM000007453D | Original Publication Date: 1995-Jul-01
  2. 32.
    A method of sample rate conversion is presented which has two primary beneJts over previous methods. Thefirst advantage is the minimization of on-line data storage needed by the often large coefficient matrix required by the interpolation filter By evaluating a trun- cated Taylor series expansion of the matrix...
    IPCOM000007452D | Original Publication Date: 1995-Jul-01
  3. 33.
    Surface-mounted custom labels for portable elec- tronic devices, e.g., selective call receivers may be used, for example, to record a serial number, to iden- titji a manufacturer or service provider, and for secu- rity purposes, such as theft prevention A problem with surface-mounted custom labels is the amount of...
    IPCOM000007451D | Original Publication Date: 1995-Jul-01
  4. 34.
    Pagers with Multiple Alarms exist in the mar- ket today. However there is no way for the user to distinguish between the various alarms that have been set. This greatly limits the usefulness of alarms. By adding canned messages or icons to alarms, the usehdness of alarms is greatly extended. For exam- ple, the user...
    IPCOM000007450D | Original Publication Date: 1995-Jul-01
  5. 35.
    We describe a method to improve the apparent IP3 of a HSMR (High Elevation Specialized Mobile Radio) mobile subscriber by adding attenuation to the front end when the receiver is above sensitivity and when the SQE algorithm detects the presence of IM interference.
    IPCOM000007449D | Original Publication Date: 1995-Jul-01
  6. 36.
    The use of infinite impulse response (IIR) fil- ters is prevalent in audio applications. IIR filters gen- erally offer reduced filter order for an equivalent fil- ter transfer function as compared to finite impulse response filters (FIR). One of the drawbacks of efft- cient, high order IIR fixed point filter...
    IPCOM000007448D | Original Publication Date: 1995-Jul-01
  7. 37.
    Private trunked radio systems, such as those used by state and local government, ohen need to temporarily reallocate talkgroup resources due to unusual circumstances or special events. A flood, for example, might create a temporary need for the police to communicate with the water and electric departments.
    IPCOM000007447D | Original Publication Date: 1995-Jul-01
  8. 38.
    In a wide area system, granting privileges (pri- vate call, phone interconnect, etc.) to radio users frequently requires manual setup and maintenance. This is especially the case if the user should have the privilege on a short-term basis. We propose an automatic time-based privilege granting system, which will...
    IPCOM000007446D | Original Publication Date: 1995-Jul-01
  9. 39.
    In Multi-Zone systems, in which all the zones are connected for both audio and control data, the need to establish communications that include more than two zones is known. It is desirable to establish efficient links between zones in such a communica- tion. Efficiency can be based on numerous factors, such as...
    IPCOM000007445D | Original Publication Date: 1995-Jul-01
  10. 40.
    BACKGROUND OF THE PROBLEM: Today's software is increasingly suffering From more features which make a program more com- plex and require more CPU horsepower in order to run. Anyone that has a 68030-based Macintosh, worked with Microsoft's Excel 2.2 and upgraded to 4.0 has experienced this first-hand. For our RF...
    IPCOM000007444D | Original Publication Date: 1995-Jul-01