`
`McGraw-Hill
`
`Dictionary of
`Computing &
`1 Communications
`
`McGraw-Hill
`
`NewYork Chicago“. §an Francisco Lisbon LOndofi-ItMé'drid.
`Mexico Ci'ty“"“’""M'ipl‘én New Begum ganglk'fin ;;Seoul Singapore
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`u .1 I"
`":
`5r
`5 : '
`.
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`\“v.
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`GoPro/Garmin
`
`EX. 1012: Page 001
`
`GoPro/Garmin
`EX. 1012, Page 001
`
`

`

` The McGraw-Hill Companies
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`Materials in this dictionary are derived from the McGRAW—HILL DICTIONARY
`OF SCIENTIFIC AND TECHNICAL TERMS, Sixth Edition, copyright © 2003 by
`The McGraw~l-Iill Companies, Inc. All rights reserved.
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`MCGRAW~HILL DICTIONARY OF COMPUTING <9 COMMUNICATIONS, copyright
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`ISBN 0—07—142 1 78-5
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`Library of Congress Cataloging~in~Publication Data
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`McGraw~‘l—Iill dictionary of computing and communications/McGraw—Hill.
`p.
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`ISBN 0—07—142178~5
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`2. Telecommunication—Dictionaries.
`1. Computer science—Dictionaries.
`3. Engineering—Dictionaries.
`I. The McGraw—Hill Companies, Inc.
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`2003051209
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`GoPro/Garmin
`
`EX. 1012, Page 002
`
`GoPro/Garmin
`EX. 1012, Page 002
`
`

`

`heard in the background of the desired program.
`{ :krOS .méi-e'léshon }
`[COMMUNI Time
`cross office switching time
`required to connect any input
`through the
`switching center to any selected output.
`{ 'krOs
`.ofos 'SWiCh-ll] .tim }
`[COMPUT SCI} The
`cross-platform computing
`use of very similar user interfaces for versions
`of programs running on different operating
`systems and computer architectures.
`(
`.krOs
`{platform ksm‘pyiidirj }
`cross-referencing
`program [COMPUT SCI] A
`computer program used in debugging that
`produces indexed lists of both the' variable
`names and the statement numbers ‘of the source
`program.
`{ lkrés 'ref'rans-in .pro-grsm )
`crosstalk
`[COMMUNl 1. The sound heard in a
`receiver along with a desired program because
`of cross modulation or other undesired coupling
`to another communication channel;
`it
`is also
`observed between adjacent pairs in a telephone
`cable.
`2. Interaction of audio and video signals
`in an analog television system, causing video
`modulation of the audio carrier or audio mod-
`ulation of the. video signal at some point.
`3.
`Interaction of the chrominance and luminance
`signals in an analog color television receiver.
`{ 'krds.tc‘>k}
`[COMMUN] The cross cou—
`crosstalk coupling
`pling between speech communications channels
`or their component parts. Also known as crosstalk
`loss.
`{ ‘krOs.tok .kop-lig)
`crosstalk level
`[COMMUN] Volume of crosstalk
`energy, measured in decibels,
`referred to a
`reference level.
`{ 'krés,tok .lev-el }
`crosstalk loss
`See crosstalk coupling.
`.tok .105}
`the
`[COMMUN] A measure of
`crosstalk unit
`coupling between two circuits; the number of
`crosstalk units is I million times. the ratio of
`the current or voltage at the observing point to
`the current or voltage at the origin of the disturb-
`ing signal, the impedances at these points being
`equal. Abbreviated cu.
`{ 'krés,tok ,yiinet }
`CRT
`See cathode~ray tube.
`cryogenic film [COMPUT SCI] A storage element
`using superconducting thin films of lead at
`liquid~helium temperature.
`{ .kri-a‘ien-ik ‘film }
`cryptanalysis
`[COM-MUN] Steps and operations
`performed in converting encrypted messages
`into plain text without previous knowledge of the
`key employed.
`{ ,krip-ts'nal'a-sas}
`‘
`cryptochannel
`[COMMUN] A complete system of
`communication that uses electronic encryption
`and decryption equipment and has two or more
`radio or wire terminals.
`{ :krip-to'chan-cl }
`cryptogram [COMMUN] Information written in
`code or cipher.
`{ 'krip-to.gram }
`un-
`cryptographic
`algorithm [COMMUN] An
`changing set of rules or steps for enciphering
`and deciphering messages in a cipher system.
`{ {kriptslgraf-ik 'al~gs.rith-sm }
`cryptographic bitstream lCOMMUN] An unend-
`ing sequence of digits which is combined with
`ciphertext to produce plaintext'or with plaintext
`
`'krOS
`
`{
`
`’ crystal-stabilized transmitter
`
`to recover ciphertext in a stream cipher system.
`I lkrip-tslgraf-ik 'bit,strem }
`cryptographic key
`[COMMUN] A sequence of
`numbers or characters selected by the user of a
`cipher system to implement a cryptographic algo-
`rithm for enciphering and deciphering messages.
`Also known as key.
`{ :krip-tslgraf‘ik 'ké }
`cryptography
`[COMMUN] The Science of prepar~
`ing messages in a form which cannot be read
`by those not privy to the secrets of the form.
`‘
`{ krip'tag-ro-fé }
`cryptology
`[COMMUN] The science of preparing
`messages in forms which are intended to be
`unintelligible to those not privy to the secrets
`of the form, and of deciphering such messages.
`{ krip'tal-s-ié }
`.
`cryptopart
`[COMMUN 1 One of several portions of
`a cryptotext; each cryptopart bears a different
`message indicator.
`{ 'krip-t6.part}
`cryptotext
`[COMMUN] In cryptology, a text of
`visible writing which conveys no intelligible
`meaning in any language, or which apparently
`conveys an intelligible meaning that is not the
`real meaning.
`{‘krip-to.tekst}
`-
`crystal-audio receiver
`[ELECTR] Similar to the
`crystal-video receiver, except for the path detec-
`tion bandwidth which is audio rather than video.
`[ lkrist-el bdé-ori‘séwvor}
`[ELECTR] A tran—
`crystal-controlled transmitter
`smitter whose carrier frequency is directly con-
`trolled by the electromechanical characteristics
`of a quartz crystal unit.
`{:krist-al ksnltrold 'tranz
`.mider}
`4
`crystal detector
`[ELECTR] 1. A crystal used to
`rectify a modulated radio-frequency signal to ob-
`tain the audio or video signal directly.
`2. A Crys-
`tal diode used in a microwave receiver to combine
`an incoming radio-frequency signal with a local
`oscillator signal
`to produce an intermediate-
`frequency signal.
`{ 'kristel di'tektar}
`crystal
`diode
`See
`semiconductor
`{ fkristal 'di,6d }
`crystal filter
`[ELECTR] A highly selective tuned
`circuit employing one or more quartz crystals;
`sometimes used in intermediate-frequency am-
`plifiers of communication receivers to improve
`the selectivity,
`{ :kristol 'fil-ter}
`crystal mixer
`[ELECTR] A mixer that uses the
`nonlinear characteristic of a crystal diode to mix
`two frequencies; widely used in radar receivers
`to convert the received radar signal ‘to a lower
`intermediate-frequency value by mixing it with a
`local oscillator signal.
`{ lkristel 'mik-sar}
`in
`crystal oscillator
`[ELECTR] An
`oscillator
`which the frequency of the alternating-current
`output is determined by'the mechanical pro-
`perties of a piezoelectric crystal. Also known as
`piezoelectric oscillator.
`{ lkrist-sl 'as‘eJad-or}
`crystal
`rectifier
`See
`semiconductor
`diode.
`{ lkristsl ‘rek-ts,fi-sr}
`lELEC’I‘R] A trans-
`crystal-stabilized transmitter
`mitter employing automatic frequency control, in
`Which the reference frequency is that of a crystal
`oscillator.
`{ lkrist-ol lsté-bcdizd ‘tranz.mid.sr}
`
`diode.
`
`81
`
`GoPro/Garmin
`
`EX. 1012, Page 003
`
`GoPro/Garmin
`EX. 1012, Page 003
`
`