Filed Dec. 3. 1951
`
`R. E. GOTTFRIED ETAL
`SUBSCRIPTION TELEVISION WITH SCRAMBLED
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`PMC Exhibit 2156
`
`Apple v. PMC
`|PR2016-01520
`
`Page 1
`
`PMC Exhibit 2156
`Apple v. PMC
`IPR2016-01520
`Page 1
`
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`PMC Exhibit 2156
`
`Apple v. PMC
`|PR2016-01520
`
`Page2
`
`PMC Exhibit 2156
`Apple v. PMC
`IPR2016-01520
`Page 2
`
`
`

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`July 15, 1958-
`
`Filed Dec. 3, 1951
`
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`Apple v. PMC
`|PR2016-01520
`
`Page 3
`
`PMC Exhibit 2156
`Apple v. PMC
`IPR2016-01520
`Page 3
`
`

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`PMC Exhibit 2156
`
`Apple v. PMC
`|PR2016-01520
`
`Page 4
`
`PMC Exhibit 2156
`Apple v. PMC
`IPR2016-01520
`Page 4
`
`
`
`
`
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`Jilly 15, 1958
`
`Filed Dec. 3. 1951
`
`R. E. GOTTFRIED ETAL
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`PMC Exhibit 2156
`
`Apple v. PMC
`|PR2016-01520
`
`Page 5
`
`PMC Exhibit 2156
`Apple v. PMC
`IPR2016-01520
`Page 5
`
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`PMC Exhibit 2156
`
`Apple v. PMC
`|PR2016-01520
`
`Page 6
`
`PMC Exhibit 2156
`Apple v. PMC
`IPR2016-01520
`Page 6
`
`

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`July '15; 1953
`
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`
`R. E. GOTTF’RIED ETAL
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`SUBSCRIPTION TELEVISION WITH SCRAMBLED
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`
`Apple v. PMC
`|PR2016-01520
`
`Page 7
`
`PMC Exhibit 2156
`Apple v. PMC
`IPR2016-01520
`Page 7
`
`

`

`
`
` July 15, 1958
`
`Filed Dec. 3. 1951
`
`R. E. GOTTFRIED ETAL
`SUBSCRIPTION TELEVISION WITH SCRAMBLED
`TRANSMISSION AND MARQUEE AND BARKER
`12 Sheets—Sheet 8
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`PMC Exhibit 2156
`
`Apple v. PMC
`|PR2016-01520
`
`Page 8
`
`PMC Exhibit 2156
`Apple v. PMC
`IPR2016-01520
`Page 8
`
`

`

`
`
`PMC Exhibit 2156
`
`Apple v. PMC
`|PR2016-01520
`
`Page 9
`
`July 15, 1958
`
`Filed Dec. 5, 1951
`
`R. E. GOTTFRIED ETAL
`.
`SUBSCRIPTION TELEVISION WITH SCRAMBLED
`TRANSMISSION AND MARQUEE AND BARKER
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`12 Sheets—Sheet 9
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`PMC Exhibit 2156
`Apple v. PMC
`IPR2016-01520
`Page 9
`
`

`

`
`
`PMCExhibit 2156
`Apple v. PMC
`|PR2016-01520
`
`Page 10
`
`R. E. GOTTFRIED. ETAL
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`PMC Exhibit 2156
`Apple v. PMC
`IPR2016-01520
`Page 10
`
`

`

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`July :15. 1958
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`
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`
`R. E. GOTTFRIED ETAL
`SUBSCRIPTION TELEVISION WITH SCRAMBLBD
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`PMC Exhibit 2156
`
`Apple v. PMC
`|PR2016-01520
`
`Page 11
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`PMC Exhibit 2156
`Apple v. PMC
`IPR2016-01520
`Page 11
`
`

`

`
`
` July 15, 1958
`
`Filed Dec. 5. 1951
`
`R.‘ E. GOTTFRIED EI'AL
`SUBSCRIPTION TELEVISION WITH SCRAMBLED '
`TRANSMISSION AND MARQUEE: AND BARKER
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`Apple v. PMC
`|PR2016-01520
`
`Page 12
`
`PMC Exhibit 2156
`Apple v. PMC
`IPR2016-01520
`Page 12
`
`

`

`
`
`'
`
`The present invention relates t'o'impr'ovements in sub-
`-
`'5ci'ip'tion 'transmis'sions'_-a_nd_'_in particular to subscription
`television such as for exampie'to systems of this character
`using‘Scrambled television signals, such systems being'ren-
`.‘r'ie'red operative, 'upoii'.'t_he ‘user or subscriber "at the re-
`ceiving station acknowledging 'a coin demand which .is
`' also conveyed to the2receiving station from the transmit-
`ting station. ‘
`'
`'
`in general, the system described herein constitutes an '
`improvement in the system described and claimed in co— '
`pending application of Robert E. Gottfried _e_t 31., Serial
`No. 225,651, filed May. to, 1951. 'now .Patent No.
`2,769,026,'issued’Octtiberl’SU, 1956, andjassigned'to the
`present assignee, in that'the present system incorporates
`n'te‘ans for'apprisirig the user or subscriber,- prior to coin
`acknowledgment, as to the-program which is available to
`him, 'up‘on 'sc:_ltno.wledgling'thc coin-demand, such infor-
`mation 'beiugconveyed to him both Visually and orally,
`i. an the form of a f‘marquee“ and “barkcrf
`_
`'
`The term “marquee"'as_ used herein is intended to-con-
`note informationjpreSent in visual form for apprisin'g'the
`user'or subscriber as to the program which he may 'see
`upon acknowledging "a coin demand. Hy thus provid-
`ing a. “marquee,” conditions akin to “going” to a motion
`picture theatre 'are' established,
`in that a theatre goer,
`before paying his money at the ticket counter 'is sub-
`jected to the information appearing on the theatre mar-
`quee:
`.
`'.
`.
`The 'terr‘ri “barker” as 'used herein-has reference to
`audible signals available .to the user or subscriber for
`.apprising suchuser'as to the program-being transmitted.
`The "barker" ‘a'nd “marquee” are thus intended to
`convey generally the same linformation,'but- one’is accom-
`plished orally and the, other visually respectively.
`'1!
`is therefore an object of the present invention to
`provide an improved system of this charaCIerin ivhi'ch
`.a "marquee" and/ or "barker" is provided.
`_
`Another object of the present-invention is to provide
`an improved system-of this character for accomplishing
`the results indicated above in an arrangement-which is
`compatible wiihprescnl Federal Communications Com-
`.rnission standards.
`'
`_
`Another object of the preaent invention is to provide
`'an improved system of this character which,- prior to
`coin acknowledgm'cnt'by the user or'su'b'sc'i‘iber, apprises
`such-user or subscriber-both visually and orally-as to the
`programbeing' transmitted, i. a, theiu'sci' is provided with
`..a so-calied"‘marquee“ and is subjected to a “barker.”
`' While 'thc-jp'rescnt arrangement shows the use of both
`a “marquee” and a “barker,” it is noted that both need
`- not be present for accomplishing the general purpose,
`but it is desired to have Eboth present,"
`In other words,
`the system- may be operated With'the“‘ba‘rkcr” alone, With
`the “marquee” alone','-or,_'as is p'reférr'ed herein, With both
`the “barker” and the “marquee.”
`-
`The features of the present
`invention which are be-
`lieved to be novei are set forth with particularity in the
`appended claims. This invention itself, harass to its
`
`35'
`
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`
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`2,843,655
`United States Patent Ofiice
`Patented July 15, 1953
`
`r-
`
`I
`2,843,655 '
`SUBSCRIPTION TELEVESION' WITH SCRKMBIED
`TRANSMISSION
`MARQUEE AND BARKER-
`
`Robert E. Gntifried, 'Wes'r no Angela‘s, Allen ‘1); Hair."
`' mass, 'Los Angeles, and lipids N. Riden‘oun Ln'g'un'a
`Beach, ‘Catlfi, assignor's to International Telemeter
`carrots
`-
`-
`-
`' ‘goi'poration, L'o's Angeles, -'Ca.l.if., a corporation of
`
`10
`
`Application December 3, i951; Serial No. 259,536 .
`‘11 Claims. "(CL ITS-4.1)
`
`15
`
`20
`
`25
`
`30
`
`organization and manner ofoperation, together with fur-
`"ther objects and advantages thereof, may be best under;
`stood by reference to the following description taken in
`connection with the accompanying drawings in "Which:
`Figure '1
`is a schematic diagram of apparatus? at one
`of 'the plurality of transmitting stations and embodies
`' features of the present in'vention‘i‘t‘he apparatus- beings
`part of the frequency modulationsystem for modulating
`the sound carrier both with the program audio'iand three
`tone signals.
`I
`Figure 2 is a schematic representation of some of the
`apparatus at the receiving station which issensitive to the
`frequency modulation components on the sound carrier
`transmitted by the apparatus shoivn in Figure 1.
`Figure 3 is a view in side elevation of a'portion cf
`the ph‘otoelectricaiiy operated apparatus shown schemati-
`cally in Figure 1, used for purposes of 'efiectin'g tone mod-
`ulation in accordance with perforations in an endless tape.
`Figure-4 is a sectional view-taken generally-on'the'iinc
`4—4 of Figure 3.
`-
`'.
`"
`Figure 5 is a view taken as indicated by the line 5—5
`in Figure 3 and serves to show three perforated-aper-
`tures used in developing three corresponding tone sig-
`nals.
`'
`Figure 56 is-a plan view of a portion of the endless tape
`shown in Figure 3, and the section of the tape'iiiustrated
`includes all perforatiOns for 'proddcing one cycle dfop-
`etatiou.
`'
`‘
`'
`Figure 7 is a front elevationai view of a coin integrator
`and comparator used at the receiving station in coopera~
`tion withthe coin sorter and coin counter.
`'
`_
`_
`Figure Bis 'u seetional view taken substantially along
`the line 8—8 of Figure 7.
`'
`'
`'
`,
`.
`_
`Figure 9 is a vertibal sectional view taken substantially
`along-the line 9—9 of Figure "i.
`-
`.
`'
`Figure 10 is a fragmentaiy elevational view taken
`'
`indicated at 10—10 in Figure 9.
`Figure 11 is 'a fragmentary rear elevational view of- the
`' apparatus shown in Figure 7, Figure 11 being taken: in
`the direction indicated by the line 11—1-1 in-Figure 9.
`Figures 12—16, both inclusive, serve- to illustrate cer-
`tain amplitude changes which the detected sound signals
`undergo in relationship to their frequencies'ai the points
`A, B, C, D and E, respectively, in Figure 2.
`.-
`Figure '1'? shows in more simplified forni- the-relay
`switching arrangement shown in Figure 2.
`Figures 18 and 19, respectively, show in enlarged form
`the manner in which the coin demand arm and the-coin
`actuated arm shown in Figures 2 and 17 script with
`common stationary contacts for achieving a coincident
`condition.
`_
`Figure 20 is a side view of a coin coilecting, sorting
`and counting mechanism for operating the coin pay
`switches in Figures 2 and 17.
`'
`-'
`Figure 21 is a rear elevational view of' the coin sort-
`ing mechanism taken. as indicated by the'dine 21—21 in
`Figure 20.
`'
`'
`,
`_
`Figure 22 is a fragmentary sectional 'view taken sub-
`sta'ntially along the line 22—22 of Figure 21.
`Figure 23 is a fragmentary sectional view‘t‘aken sub-
`stantially along the line 23—23 of Figure 21.‘ '-
`Figure 24 is a cross sectional view taken substantiain ’
`along the line 24—24 of Figure-2].
`_
`__
`-
`I
`Figure 25 isa schematic representation of othervpulse
`distribution apparatus in a modified system wherein the
`operator is not provided ,with a visual indication of the
`coinage demanded, but yet may cause unscramblingcf
`the picture by operating a normally open switch 506
`shown therein.
`_
`_'
`-_
`_
`Figure 26 is a schematic. representation _of_a second
`modification of the pulse distributing apparatus, and a1-
`though the apparatus incorporates the structure slam in
`
`
`
`PMC Exhibit 2156
`
`Apple v. PMC
`|PR2016-01520
`
`Page 13
`
`PMC Exhibit 2156
`Apple v. PMC
`IPR2016-01520
`Page 13
`
`

`

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`3
`Figures 7, 8, 9, 10 and 11 as modified in subsequent
`figures for producing a. visual indication of the coin de-
`mand, such coin demand may be acknowledged to pro-
`duce an unscramhled picture by the user operating a.
`switch.
`Figures 27 and 28 show a modified stepping mecha—
`nism embodying generally the functional features of the
`prototype apparatus shown in Figures 7—11, inclusive, but
`includes means whereby the user may obtain a visual in-
`dication of the coinage demanded.
`Figure 29 shows a recording tape with certain informa-
`tion recorded thereon in accordance with f: pulses caused
`by the so—called f1 apertures in Figure 6.
`Figure 30 is a schematic representation of the record-
`ing mechanism including the recording tape, recording
`head and tape driving motor, all of which are controlled
`by the arrangements shown in the previous figures.
`Figure 31 is a view in elevation of the coin demand
`stepping mechanism as viewed generally in the direction
`indicated by the lines 3!——31 in Figure 21".
`Figure 32 represents in graphical form operating char~
`acteristics of the video transmittim means shown in Fig-
`ure 1.
`Figure 33 shows in more detailed form, circuitry in the
`marquee illustrated in Figure 2.
`Figures 34, 35, 36, 37, 38 and 39 illustrate wave shapes
`present in the system illustrated in Figure 2 in relation-
`ship to the marquee illustrated in Figure 33.
`Figure 40 illustrates a modified arrangement wherein
`a “coin acknowledgment“ may be made without the sub-
`scriber or user performing any positive act,
`i. e., by
`merely allowing time to elapse.
`Figure 41 illustrates a modified arrangement.
`With reference to Figure 1, the frequency modulated
`transmitter 10 serves to radiate into space, by means of
`antenna'll, frequency modulated signals, the components
`of which comprise first the “barker” audio signals de-
`veloped, for example, in microphone, or, for example.
`phonograph pickup 12, and second the series of tone fre-
`quencies f1, f2 and {a developed respectively by the tone
`modulators 13, 14 and 15, and, third, the program audio
`or sound signals developed in microphone 12A and ap-
`plied to the amplitude modulator stage 12B' wherein a
`carrier of 45' kilocycles generated in stage 1213‘.
`is ampli-
`tude modulated by the audio signals. The modulated
`waves are applied to the control grid of tube 29. The
`frequency of the tones f1, f3 and is are shown herein
`respectively as being 17.9 kilocycles, 20 kilocycles and
`22 kilocycles, which are frequencies well above the fre- _
`quencies in the audible range developed in the sound
`modulator stage 16, which includes the microphone or
`pickup 12. Although we prefer that these three tone
`frequencies lie above the audible band for practical
`reasons, concepts of the present invention may be prac-
`ticed when such frequencies f1, f3, 1%,, or any one of them
`is a sub-audible frequency.
`The modulator stages 13, 14 and 15 each includes con-
`tinuously oscillating networks which include respectively
`pairs of tubes 13A, 1313, 14A, 1413, 15A, 1513,
`the fre-
`quency of oscillation in each of such networks 13, 14, 15
`being determined by the frequency of the associated
`crystal 130, 140, ISO. While one specific type of super-
`sonic oscillation network is shown in Figure l. the present
`invention is not critical
`in that regard, for it
`is well
`understood that other types than the one shown may be
`used for these purposes. Oscillations developed in net-
`works 13, 14 and .15 are transferred respectively through
`condensers 13D, 14D and 151)
`to the control grids of
`tubes 13E, 141-3 and 15E, respectively. The cathodes of
`these tubes 13E, 14E, 15B. are returned to ground through
`parallel connected resistances 13 and 19 as well as by
`series circuit which includes the serially connected re-
`sistances 20 and 21.
`-
`While the oscillation networks 13, 14 and 15 continu-
`
`70
`
`2,843,655
`
`4
`ously oscillate, their valtage output is not normally trans»
`ferred to the cathode load resistances 18, 19, since in such
`normal condition the control grids of tubes 13E, 14B and
`15E are biased by means described presently to cut off
`the flow of space current through such tubes. Such bias-
`ing means includes corresponding normally heavy con-
`ducting tubes 13'1", MT and 15T which have their anodes,
`normally at a relatively low potential, connected to the
`control grid of tubes 13E, 14B, and 1513,
`respectively,
`through series circuits comprising, respectively: resistances
`135 and 136; resistances 14S and 146; and resistances
`153 and 15G. The anodes of tubes 13T, MT and 15T
`are connected to a positive terminal of corresponding
`anode voltage sources 13M, 14M and 15M through corre-
`sponding voltage dropping resistances 13R, 14R and 15R.
`The cathodes of tubes 13T, MT and 15T are connected
`to the ungrounded negative terminal of voltage sources
`13N, 14N and ISN, respectively. The control grids of
`tubes 13E, 14F. and 1513. are returned to ground, respec-
`tively, through the following series circuits:
`resistances
`136, 131:! and source 13F; resistances 14G, 14Q and
`source 14F; and resistances ISG, 150 and source 15F.
`It is observed that the tubes 13E, 1413. and 15B are con-
`nected essentially as gated cathode folloWers and have
`their anodes connected directly to the positive terminal
`of voltage sources 13L, 141., and 151., respectively.
`The tubes 13T, HT and 151‘ are coupled to phototuhes
`131, 14! and 153', respectively. All these photocells are
`connected in identical manner, and a detailed description
`of the connection of phototube 13] suffices to describe
`the other connections. The phototube I3] is connected in
`a series circuit with resistance 13X and voltage sources
`13Y and 132. The anode of the phototube 13] is con-
`nected to the control grid of tube 131', and the junction
`point of sources 13Y and 132 is connected to the cathode
`of tube 13T, so that upon illumination of the tube 13] the
`control grid of tube 13T is driven negatively with respect
`to its cathode, to thereby cut off or appreciably reduce
`the flow of current through tube lS‘I‘, with the result
`that the potential at the anode of tube 131‘ increases to
`such an extent that the connected control grid of tube 13E.
`rises sufficiently to become conductive and to thereby
`allow oscillations developed at
`the oscillator stage 13
`to appear across the cathode output resistance 18.
`These tubes 13B, 1413, 15B are rendered conducting
`either when the associated phototubes 13], 14], 15] are
`energized by the corresponding light sources 13K, 14K
`and 15K, or, in the alternative, when either one of the
`corresponding normally open test switches 13H, 14H
`or 15H is closed. Normally these phototubes 131, 14],
`153' are not illuminated because of the opaque endless tape
`23 which, however, is suitably apertured as indicated in
`Figure 3 to allow alternate illumination of such photo-
`tubes.
`It is noted that only one of the phototubes 13],
`14], 151 is thus illuminated at any one particular time.
`Effectively, the normally nonconducting tubes 135. 14E
`15E are gated on in timed sequence with movement of
`the tape 23, to thereby allow super-audible signals of fre-
`quencies f1, f2 and )3 to alternately appear on the output
`lead 24.
`It is observed that the adiustable resistances 13F, 14F
`and 15P in corresponding modulator stages 13, 14 and
`15 are used to adjust
`the level of the corresponding
`signals f1, f2 and is appearing on the lead 24. These
`signals appearing'on lead 24 are transferred through the
`transient suppressing network 25 which includes the series
`condenser 26 and shunt connected resistance 27. The
`lead 24 is
`thus connected through serially connected
`resistance 20 and condenser 26, and through the adjust-
`able tap on the potentiometer resistance 28 to the control
`grid of the cathode follower tube 29, on the grid of which
`is also applied the audio signals developed by the micro-
`phone or pickup 12. The current or voltage variations
`developed by such transducer 12 are applied to the con-
`trol grid of the amplifying stage 30,
`"The amplified out-
`PMC Exhibit 215
`
`
`
`Apple v. PMC
`|PR2016-01520
`
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`PMC Exhibit 2156
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`IPR2016-01520
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`2,843,855
`
`5
`transferred
`put appearing on the anode of tube ‘30 is
`thro‘ligh a conventionalivsnacrcsécand artisans eircuit
`31 for ptir‘pbses or emphasizing the high frequencies in
`accordance with well established frequency modulating
`transmissiontechniques. The output of this network 31
`is nansferred to the control grid of the cathode follower
`tube 3_3, the cathode load rosistan'ce 34 of Which is in
`shuntjgviththe primary Winding 35 of the transformer
`36. _The secondary winding 'of transformer 3'6 is con-
`nected to oppoSite outside terminals of potentiometer
`resistance2s, so that the moVa'ble tap on the resistance
`28 may be adjusted to correspondingly adjust the output
`lefrel or audio signal applieo to the control grid of tube
`29. The-resulting mixed audio and tone signals appear-
`on the cathode of tube 29 are applied tie the frei4uency
`modulation transmitter 10 and appear as frequency modu-
`late‘d components on the wave transmitted from antenna
`11.
`'
`.
`
`The particular methanical tape driving means and asso-
`ciated lamp housing useful in generating the aforemen-
`tioned tone signals fpfg and f3 arenow described in re-
`lationship to Figures 3',
`.4, 5 and 6 although it will be
`appreciated that the preSetit invention is not critical as
`to the specific type of apparatus shown in such figures
`for accomplishing theaforelnentioned purposes, although
`the particular means'described in these figures is the One
`prererred.
`I
`_
`__
`The endless perforated tape 23 in Figure 3 passes over
`idler wheels 33, 39, 4d and 41 and over the driving
`sprocket '42, so that the tape travels in the direction indi-
`cated by the arrow 44 in thespace adjacent lamp hous'r
`ings 45, stand 4?, which contain respectively the lamps
`13K, '14K and 15K [Figure 11. Corresponding photo-
`tubes_131, l4] and 15] are disposed below the endless
`tape in alignment with apertures 13W, 14W and 15W
`in the stationary plate 48. Thus the aperture 13W is
`used in producing fi’eqti'ency jg, the aperture 14W is need
`in‘ producing the {frequency 33', and the' aperture 15W is
`used in producing the frequency fé, such frequencies be-
`ing obtained when a corresponding perforation 13V. 14V
`or 15V, respectively, is in alignment with such apertures.
`Mechanically, the tape 23 and apertured'plate 48 a'reso
`fabricated that'oniy one of the '_ape_rtures' 13W, 14W;_1$W
`may be uncovered atlany one particular time, and while
`such apertures are shown in staggered relationship in
`Figntfe __5, such staggered nelationéhipis not necessary
`and they may actually be placed in line so long as the
`apertures _i_n__the tape 23 are aligned so that only one of
`the aperture'd portions is uncovered at any one particular
`time.
`.
`-
`Thus it is evident from the above description that the
`=eailravntér"ssses"
`signs 1 serves to radiate into
`space a frequency modulated wave, the modulation corri-
`ponents of vighich include a barker sound developed by
`transducer 12 program sound deiel'op'ed in microphone
`12A and the tone signals of frequencies f1, f2 and {3,
`Which tone freqUencie's alternately appear as Components
`in theradiate'd wave. The receiver shown in Figure '2
`serves to demodulate the modulation components of the
`aforementioned frequency modulated wave _to reproduce
`the sound components as' well as _to perform certain
`control operations in accordance with the signals of fre-
`quencies f1, f3 and f3.
`_
`-
`_
`__
`Besides
`transmitting the aforementioned frequency
`modulated wave, the station also sends out a scrambled
`video signal which includes “marquee” information by
`means of the video ante'nna' 50'. Thus the transmission
`from antennas 11 and 50 contain all of the information
`required.- for recreation 'of-_ the -progratn__ televised, -_pro-
`vided-of course thatgnleans are present atthe receiving
`station indicatedlin‘, Figure 2 for unscrambling. the re-
`'cei'ved video signals.-
`‘_
`_
`-
`So far‘as certain aspects of the present invention are
`concerned, the scrambling'means at the transmitter and
`the utensil-aghast at are legendary steamer.
`
`'
`
`'6
`out forms, diflerent systems of which are shown in the
`prior art, but the one pretense
`the are shown
`'cla'irned in the copiendinggapplieatioh"of 'Allen D.- Hoff-
`m'ann et al.,\_for Prepeid'Ente'rtajnnient Distribution'Sys-
`tem, Serial bio. 224,622; filed May '4, l95l, now Patent
`No. 2,764,625 issued October 30, 1956} add a'SSignéd'tb
`the same assignee as the present invention;
`_
`Brovisions' are present at the transmitting station for
`sendingmar'que'e information-and this in general includes
`means whereby thefirst five or ten-lines of everyfieid or
`first ten or tiventy lines “of every frame is devoted to
`marquee information. For this purpose there are pro-
`vided two icon'o'scopes, namely'a progra'i'ii iconoscope 12G
`for purposes ofrdeveloping' program video and 'a'. marquee
`iconoscope 12H for developing marquee video. Both
`ico’nosco'pes 1-26 and 12H are fed with-vertical synclt
`pulses developedin the vertical 'syiich generator 12] .‘a'nd
`appearing as 12K (Figure 32).
`:
`-
`_
`This synch pulse 12K is a. I-pulse and recurs at
`the repetition rate of 60 per second;
`such pulse 12K
`precedes of coorse the video information which is trans-
`mitte'd'in 262% lines but,"i_n accordance with the pres-
`ent invention, the first ton- lines of such 26236 lines are
`devoted to marquee information. For this purpose the
`vertical syuch pulse 12K developed in the generator 12]
`is applied, after considerable delay,
`to appropriately
`timed electronic switches 12M and RN, through which
`thevideo developed respectively by the ic'onoscopes 121-1
`and 120 are required to pass before being applied to the
`mixer stage 121’.
`.More specifically, synch p'ul'se's developed in generator
`121 are applied to a s'o-called "‘A" phantastron 12R and
`a secalied “B” phantasti‘on 128 which
`a desired
`amount of relay and when the delayed triggers from
`stages 12S and 12R are applied to a' fiiptlop multivibrator
`12'1", the output of such 'multivibratm- 112T is applied on
`the one hand to the electronic switch 12M and on the
`other hand to the electronic switch 12N, so as to pro-
`duce the result indicated in Figure 32.
`_
`In general, the time interval “T” in Figure 32 is de-
`termined by the delay imposed by phantastron A, and
`the delayed pulse from phantastron A “fires” the multi-
`vibrat'or stage 121‘. The “B” phantastron 128 imposes
`a much larger delay to the trigger'and the output of
`such “B” phantastron 128 cuts off current conduction in
`the multivibrator stage to thereby define the trailing edge
`of the multivibrator pulse.
`Thus, in scanning, the output of'the marquee icono-
`scopc 12H is applied exclusively to the mister stage 121EI
`for the first ten lines and the video output of the icono-
`scope 126 is applied exclusively for the remaining 252%
`lines to the mixer 121’. The marquee video and pro-
`gram. video thus applied to the video transmitter 12Q
`is scrambled by the video scrambling means 12X upon
`closure of switch 12Y.
`Briefly, as explained in detail elsewhere, this marquee
`video information appearing in the first ten lines is re-
`produced at the receiver by first shifting or delaying the
`comparable ten lines at the receiver so that they appear
`at the center of the cathode ray tube and by blanking
`the remaining lines.
`The receiver shown in Figure 2 includes the conven-
`tional antenna 51 coupled to the conventional channel
`tuner 52. The receiver shown is of the sorcalled dual-I. F.
`type using the superheterodyne principle. and the sound
`frequencies of intermediate fi'equencies are impressed on
`the “Sound I. F. and Discriminator" stage 53, while the
`signals of video-appearing at a different intermediate fre-
`quency are applied to the “Video I. F. Amplifier" 54.
`The output of the I. F. amplifier 54 and second detector
`56 is applied; both to a stationary contact of the single
`pole double throw relay svvitch M3 and to the self-keyed
`unscrambler 57. The output of the unscrambling means
`57 is applied to a stationary contact of switch 55 which
`has its movable contact connected to a stationary eon--
`
`10
`
`15
`
`20
`
`25
`
`35
`
`40
`
`45
`
`UItil
`
`ill)
`
`70
`
`75
`
`
`
`
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`PMC Exhibit 2156
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`|PR2016-01520
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`2,843,655
`
`e
`' 7
`tact of switch M3. Normally, the relay switch 55 is in
`the position shown in Figure 2. and in such case a mar-
`quee picture appears on the viewing surface of the cath-
`ode ray picture tube 60, since the output of
`the un-
`scrambling means is applied to the input of the marquee
`stage 122 and the output of the marquee stage is applied,
`in such case, through switch 55 and switch M3 (when
`a monitor tone provided by the {1, f3 and f3 tone signals
`are present indicating a l‘paid" program) to the video
`amplifier 59. The video amplifier 59 thus supplies man
`quee video to the CRT60.
`It is clear that a “free” un-
`scrambled picture may be reproduced since in such case
`the output of stage 56 is applied through switch M3 to
`the video amplifier 59 and CRT6ll. The video relay
`winding 58 is energized only when certain conditions
`are realized, i. e., upon a coin acknowledgment, such con—
`ditions being described in detail hereinafter, but when
`such conditions occurs,
`the unscrambling means 57 is
`connected directly to the video amplifier and the marquee
`stage 122 is disconnected to cause a clear picture of
`the program to appear on the viewing surface of the tube
`60. The means whereby the winding 58 may be ener-
`gized is now described in detail.
`The aforementioned frequency modulated wave, after
`being detected in the stage 53, is applied to the control
`grid of tube 61 through the isolating resistance 62 and
`bandpass filter 63 and resistance 64, for purposes of sep-
`arating the tone signals of frequencies 11, f2 and f3. Also,
`for purposes of reproducing the barker sound components
`developed by the transducer 12 (Figure l), the output of
`the stage 53 is applied to the speaker 66 after passing
`through the switch 58A and law pass filter and audio am-
`plifier stage 67.
`It is noted that the relay switch 58A is normally in its
`position shoWn in Figure 2 wherein the barker sound is
`available. However, upon energization of the coin ac-
`knowledgment or video solenoid 58A, 3 bandpaSS amplifier
`12K and AM detector 12L are serially connected between
`the discriminator 53 and the audio amplifier 67, so as to
`provide program sound on the speaker 66. The amplifier
`12K. passes signals having a mean frequency of 45 kilo-
`cycles whereby the said carrier of 45 kilocycles is appl