SU428575A1 - DEVICE FOR COLOR CHANNEL SWITCHING AND COLOR IDENTIFICATION COLORS OF SECAM-PAL DECODING DEVICE - Google Patents

Description

one

The invention relates to "color television 1I" can beat the use of color information blocks from the “1” and “turn on” colors of the colors in SECAM-PAL.

Iesvesting devices for color | single-color; single; 1H | r.y; nI | Ka SECAM-PAL contain that input of a cayuka | str | bi | rvvani, and on Euhyde - carry: mmet1ri 4 | ny; rijgge) r, Sipnals from the camera, on the inputs of | P: P1Vle1ii electronic (Kom1M1utator01M and 1VY1KlyuchIlyAMI color channels.

The purpose of this invention is to improve their reliance, comfort and comfort, and to incorporate SECAM-PAL 1and to simplify the switching circuits of color cords.

This goal is reached by switching on 1 between the outputs of the electric commutated switchboard / conversion matrix, consisting of the compiler and the subtractor, which is connected to the filter,: H1A1stroen1NO mu, and frequency, 406 MHz, an adder, and a1m1l1l1l1y10yeartsyots. 1 connect with the outputs of the adammutator through the adiu from the sections of the SECAM-PAL switch and to D01 to the full-length one; at the course of the yummator through the other section and subsequently to the single-connected, they are the olarous | FND generator and phase shifter, as well as the consecutive (B1) generator; You can see that between a single strobe and a single phase and single-ended trigger of a phase-shifting RC circuit, a phase detector, the Tipiy.roM input of which is connected via an oscillating circuit and a dolol.elitelny section of the SECAM-PAL switch is connected to the output of the gating cascade, the amplifier limiting and differentiating chains.

FIG. 1 is a block diagram of a preferred device; “A, fig. 2, 3, 4, and 5 are e | signal masks, (who explain how the pai6oTy device is sega.

The operation of the device is carried out by the following image.

The chromaticity signals from the switch / post outputs are fed to inputs 2, 3 of the conversion matrix 4, consisting of a subtractor and a subtractor, the sockets from output 5 of which are supplied to the colors and switches and color channels.

With the correct phase of the color synchronization sipnal by the PAL system, “april, -a inputs 2, 3 of the matrix 4 at the time of the arrival are impulsive. In the wake of the post n1, respectively, oiglals, having phase b, 7 lines n (fig. 2). When this is 1M 1, a differential of 8 is formed on the differential output 5 of the matrix 4 (Fig. 2). This sipnal has an opposite phase with a sigial 9 (fig. 2) fed from output 10 (fig. 1) of the phase-shifting circuit // from the generator 12 (fig. 1) of the reference carrier. The same S1I11H11al is used for; demodulation

R-Y signal. Ompnal 13 (Fig. 2) at (exit 14 cyiMiMaTOipa, 16 (fi / g. 1), as well as exit 16 am lll-idle detector il7 t exit | ya | ykada 1st, rob1p01va1N1I 19, released by HiP 1 at HiMinyjibooiB 20 iOinosiHatBaiHHH (Fig. 2), oiTiayTiciiByeT. such S01gto, niya, with a ptor of a color1N101 block, it closes up (with AND Hia the SiMMettr | 2 (Fig. 1), with (with the help of which | O1, T1c ushering The commutator,) submits | S yullys, which remains (it is, and isiHawHT and a 1M1 commutator, / IB volume of the STATUS1H1I1I, in 1 kotrom) they (They were s for the previous line. In (Ov ei with this © next CTpoiiiiy n + l IB iMOMeiHT I & M: Mulses Opoz Ayuani lea 2, 3 Matrices 4 | Post | I am 6, 7, single, ± 90 ° in Relation to (signal / am (Prddydruša uyutro n (| phi1G. 2). Silnal 8, which has the same favu 1C 1si: pnalo: m 9, 1po (st |} is unavailable on cummaTojp / 5, saot (concludes juntnala 13, which is after detective1 (pvN: Oirat 1 on IB during aainiyoKia negative vpulus.) NON-HUMAN IMP | PULSE: 22 (FIG. 2) and reverses the asymmetrical shrigger 23 at the same time, with iKOTOpOM blu (The output pulse width & 5 of the asymmetrical trigger is 23, and the OIH and the switch controlled by it; / (in the next phase, the IB field is used.

In the event of a failure in Color (sy / n synchronization (line n + 3), processes similar to those described above and 1p.p1vilost phase will occur in 1 following | icTipoicy (rt + 4) (Boc1st1iov1It1o.

P (p: and the reception of the SITAM YITJALS (the 5lff switch in the SECAM position) from the matrix 4 switches the inputs / inputs from the inputs (input 3), and from the sum mato (pa 7i5) the phase-moving circuit // and the generator. 12 "P10r1no: th judendaning. At the enipame phase of color synchronization (line n), input 27 of the matrix 4, for the duration of the rear area of the horizontal quenching pulse, receives a 27 rising signal with a frequency of 25 Mets (f: IIG 3), the filter's transparency band is not a single one (Fig. 1); therefore, its output is 29, and therefore, at the outputs of the sump of an IS-1, 1Am1pl and T1-two children of 77 and the cascade The ipnal 30 (fig. 3) is no longer valid (Fig. -1) .When STOIM has negative input at the input and / zashuak At the moment, gsot1tS | T (vuyushi, Yi Yui / Pnalu 31 (Fig. 3), and leads neoim1me: 11i1 i my iipEnrep 23 in such a case, with (yogor blockade of blackness, 1c | rye1s, and on sy1M1mtT p1I1Ch (ny tishger f gives im1p1ulys, leaving © go, and put it on 1). found during the previous session.

In connection 1C et1i1m to the next line (/ g + 1) (and input 2 М1ат1п1И1ЦыТы 4 onocnyiniaeT during the duration of the rear trunk of the quenched quenching impulse: oi1pn -1 / gig 3) |

at a frequency of 406 MHz, “which is located in the transparency band of the i2lS filter, so there are 29 outputs and layiMiMiaTOipa 15 outputs, 77 detectors 77 and a junction CTjpoidHPD. and 75 (I1M appears) pulse 30 (Fig. 3) which commences. at the launch input 27 is negative Lmiulys 3.1 (Fig. 3). With this (M is a positive impulse, (Obtained in | by differentiating the leading edge of an impulse of a transient frequency, translates asymmetric trigger 23 into a state in which the chromaticity block is open, and an additional impulse from TpHrreipa 25 is not supplied to the symmetric trigger 24 , and OiHiH work in the inpiaBil phase.

To obtain. straining the channel switching of the channel three transitions from one system to the other, cascade ciipo | p | 0vai 19 1I 1NbsiM | metric (trigger 23 (fig. 1) sequentially B (phase-shifted KS circuit 32 (see fig. 1 ), a phanosis detector 33, whose other input is connected via an oscillating KOHiTyp 34 and additional setation. A SECAM-PAL switch 216 is connected to the output of a gating cascade 79, an amplifier 36 and a differential. on frame gating 79.

The device 1p (bots. 1I1M reversed. P.I. of the incorrect 1kommutator of the st | rn, (FI1G. 4) three 1Section of the SECAM key (switch 26 in (Position of the SECAM) at the output of the strobierO1van1 and 19 in the memory of 1B (rem. nor, corresponding to the days of the plots of the extinguishing impulse, the signal is 37 lines / carrier, 406 MHz (Fig. 4). This signal is, ehope ehope phase-shifting C-cap 32, giving f, .shift - 45 ° (.noz. G HIB fig. 4) and a small field circuit 34, the phase shift of the signal at the output of which depends on the frequency (found on the signal and is 0 ° for s.,. 26 Mg1 {and + 46 ° dl /.4.406 MHz ((REF. "3: 9, in Fig. 4). Signal 40 (Fig. 4) from the outputs of the | | Circuit 34 is supplied to the inputs of the phase detector 33. At the same time, the 41 oT signal is outputted from its output (Fig. 4), and So the output 26 impulse pulse (26, Fig. 1) is not asymmetric. Digger 23 (Fig. 1), and a symmetric TipHrrep 24 (Fig. 1) and a | HIM switch 7 installed in the TOIM state, in KOTOpOfM there were IB for the previous line.

In conjunction with these; m, the next CTpoiKy (n +) at the output of the cascade of tuning in the timing of time, corresponding to the site CTipo4iHoro of extinguishing it, pulsing 37 MHz, 25 MHz (Fig. 4 ), i.e., fa | for, dam1M1utatora iraiilna. This one with I1Pnal, after passing through the phase-shifting RC circuit 32 and the oscillating circuit 4, 1 finite-phase deflection shift (; pos. 38 and 39, in Fig. 4). Then the signal 40 is fed to the inputs of the phase

the detector 33. At the same time, its output appears to them P, pulse 4.1 negative LOLA of arrest. This impulse, a loop through the limiting amplifier 3-5 is formed into a rectangular (pos. 42 in fig. 4), then differentiated (pos. 43 | in fig. 4) and (the input of the trigger signal of the trigger trigger 23 is applied. At ET01M 1, at its output, 55 yurzhMogolyny I1pulys 44 feathers: it receives the simmetric1 flip-flop 24 and (associated with -nnm 1KO M1M1uto; p /, therefore during the next (st (r0ki (n + 2) "a) bukad st; rObI (moat; NIII 1/19 in mom-nt of time corresponding to the posterior one (the site of the horizontal extinguishing MI (Pulvs, again with a reference signal, 25 MHz, and are indicated е п рО | Ц-е1Ссы. will be JA01vto1r thousand

Since iKaiK for the entire atepty part of the Getr 1na1 string is output 2-5 and the symmetry is 141n TpiHrreipa 23 IHQCTOHH-HO -and has (B1pol-not decoupled lolness) (IB gives a positive case, position 44), then it can be used for a pattern. Cener (az1N01ST (S-R and V-V channels) and disconnection at ET01M a1inalog IN | Neh. Channel PAL.

When the PAL sipnals are pressed (26 iB PAL switch position and PAL) and 1P | at the wrong phase of the switch (line n) and the output of the strobe bus is set, a signal appears in the next phase (fnois. 45 and fig 5) ). This yupnal passed through the co-driver iKoiHTyip 46 (1 is sent to one of the inputs of the phase detector 33. The detector receives 47 color (subcarrier) signals from the generator 12 (subcarrier. At the same time, the output of the phase detector ovnal o1t1su | T | Pos. 48 in Fig. 5), la ena.chshtet1I1M pulses at exit 25 IU SI1M met1р1I1Ч.nogo flip-flop, and "" (mgmtrngy trngge, p 24 and y1P | equal to them im. lmutator 1 remain ib i stosto 1N1II, With whom OH "were IB for 1P1rbDYD | stingy (line.

To the poet in the following line () on the output: a cascade of st | rob | iro1vani .19 through the whits signal 45 eapysh.yi corresponding to the correct phase of the switch. This one (OIS, after passing through the oscillating KOiHiijrp 46 (Fig. 5), 1PO): on one (H I8 of the inputs of the phase detector 33. On the second (po вход component input 33 from the generator 12 SIPnAL 47 color-building). As a result the interaction of these loggers (pos. 49 iHia, fig. 5) at the output of phase detector 33 produces a pulse of 46 1 positive field p (H010. This pulse, through the amplifier-limiter 35, is formed in right-angled (loz. 50 sha fig. 5), Ratio & m differential (re1Zir / uts (| pos. 51 fig. 5). and served on the input of the iHeoHiMMeiip.HqHoro TipHrrepa 23. Appearing this 1 on its output 26 rectangular impulse 52 switches incompatible TRI | G1e1r 23 and ov z1nny with NI | M switch /, OOSTOiMiy IB during the shedding line ("+2) at the output of A1kad1a1st1ro 1Ni 19 5 | PICs corresponding to the (correct phase of 1C1 Mutator /. In the following, the above-mentioned procedures will be repeated.

0 Since during the entire active period (the line is the getter (detection at the output of 25 forest-metric TipHiprepa 2: 3 | POS 1H1 but also has 10 completely defined "anti-negative with respect to" S By the SECAM signal reception case, If the case is negative (pos. 52 on f) and | G. 5), then it is used for V11 because it is O color (the RY and B-Y PAL channels are disconnected and disconnected at this analogical SECAM channels).

O) invention

Claims (2)

1. A device for switching color channels and circuits of recognition of the glitter of the decoder, the 5th SECAM-PAL yiCTpofiicTfBa, containing the input “aokad strobe, and the output- meter” Mt. channels, characterized in that, in order to increase the reliability (the bones of the nipH device switching the SECAM-PAL decoding unit, between the outputs) of the electronic commutator and the strobe cascade, neither 5 includes a transforming matrix consisting of a subtractor and a subtractor, the output of which P: 0 is connected to the filter, is tuned (k01mu to the frequency, 406 MHz, and a mplitudny detector, with one of the inputs of the matrix connected to the output of the switch through one of the sections the switch SECAM-PAL, and to the additional input of the summator through the dipy section of the i-series are connected the generator of the reference. main generator and the phase shifter. five 2. The device according to claim 1, characterized in that, in order to simplify the color switching circuits; a1kalOv, a phase-shifting RC circuit is connected in series between the gadget of the gating and the non-metric by our 1M trigger, 0 phase detector, another input: through the oscillating circuit and an additional section (the SECAM-PAL switch is connected to the output of the gating stage, the amplifier of the boundary (the nut and the differentiating circuit, and signals from the input of the transforming matrix are given (not mediated: cascad: strobe; irov. ITsA.L (B-  C. A n + t l Il. Ajjl .J / C Y Alk. FIG. J 4, 4.25MIU, p -H-i -H-b-g -N ipuz.t U n k-r FIG. five