DE1948261C - Arrangement for the automatic tuning of receivers for wireless and wired information transmission - Google Patents

Description

3 ^{4 start} the

May generate control signal, and for example from a dung with an ^{exemplary "hr" NGS} ^ ^r _u ^m e ^ pKnmodulie

If there is a band-pass filter, this control signal can be applied to the frequency-F ^ _diagram

again actuate the sampling generator i ', so that radio systems according to rig. · _{R ß s eme}

scanning stops. The eutomatic tuning characterizes the S ^ " ^cne ' _Ab tastgenerator 5,

of the recipient is reached. If the receiving 5 adding device B and a ^ s

If an FM receiver is used, a separate <«* ™? * ™ ^ *" i ™ "Ie will not be used together with

Frequency detector F required, but the control pel base diode TRl ^ η ^ _{ταηύ5ΐοΙ} Ti? 2 one

signal can instead be sent directly from detector D from ^ Sf ^ bMet de ^ a periodic saw

be taken. ? ^B ivf ^ rt which «is denoted by

In addition to the one-way transmission of information, io tooth tension. ueie "'. | Constant ^{current supply}

as described above, the new system, high linearity au ^f grunü aer ^^ ^ _M

as has already been ^{explained , also by the tran} * istor J £ " _d units according to great enthusiasm

interpretation for two-way radio connections, especially D + F and J correspond

those in connection with mobile traffic on the ^Fl & ¹ - .. _{hncriannlinB w} ill be via a transistor

Ultra-short wave, e.g. in cars, ships, ₁₅ The »^« ΚϊΚΪκΕΐ «is on one

witness. Accordingly, the facility with which the TR 3, the ^ ™ ^? ⁸ ? 8, _s ,

New! System works together, thereby very much point χ Wtojo ^ X ^ ird, which goes through

can be made easier, since they are not reinforced _{on tensioning (fi ™ '^ T R4}

must work at the right frequencies. a feUIe «ect-elimination ^l . ^rans ^ _{m ung}

One of the principal advantages of the new system ₂₀ w.rd, and din «*« rd de Summ p ^^.

consists in the fact that the radio spectrum is better off these tensions

is and uses that detailed frequency planning ^ran ^ ^rt ·. , _TR ■, _{and TR} 4 together form

and frequency allocation no longer necessary. De transistors TR 3 and / K 4 du

and frequency allocation g

dig is. This means that the entire administration ^d ^ ^d ^ ZZnrTTR5 and TR 6 form together.

the assignment of radio frequencies, in particular, 5 ⁰ ^ "f ⁰ ™ ™ | 3 _{3ηβ of a} control signal,

in the field of mobile radio connections, be a flip-flop ^ "* '^ H _11n ,, / due to de

could be considerably simplified. So that the end in an Identif z.vorcMijng g

Tuning system the intended result for the Ident. ^ WjJ «der ^ a '' - ^^ '_zurP;

mobile two-way radio link is Trans disturb TR 2 ^un f _b ^ _a i _te t _causing the scanning

it is necessary that a transmission from a radio 30 scanning ge ^. ^ lX ^^^ o ^ chiung / can ζ. Β

station cannot be sent out in the time it stops. The ^Id ™ ^t! _R ^f ^ ™ ^ "us _d ne? Other Λκ

in which the recipient of the station has a different Identi- from a ^B _f ^and P ^a ß ^ ^e . ^r _ek ^O _t ^ [ ζζ ^ _η

receives the verification signal as its own, and that e.nes Speechfreqi «nrfrt * tor ^ YJ-

in the fixed radio station network, which consists of a ge The arrangement ™ £ ™ ^g of _Radioverkehl number of base stations, by means of a 35 way endbar on the ^ '^' ^^ on static

single- cteutung nai uic nnui ^ y> -e, _b

_u ^ ^ _ for the wireb ·· "^"'"tlhertraeune of

The system according to the invention is connected via cables.

1 sheet of drawings

Claims (2)

1 2 The object of the invention, on the other hand, is to provide a patent claim: to enable the search to be slowed down in such cases. 1. Arrangement for automatic transmitter search The invention solves the problem posed by means of in a receiver for wireless or wired 5 one of a frequency detector sent control link Information transmission from transmitters, signals by the fact that the frequency detector z. B. radio transmitters, for a certain frequency sent control signal in an adding device band, which receiver a tuning unit, added signal sent by the sampling generator Intermediate frequency amplifier and a de- is added in such a way that during the time in which the having modulator and also a frequency io frequency detector sends the control signal, the detector, when receiving z. B. a radio speed with the help of the sampling generator ersignals tuning variation produced in the frequency band of a control signal is considerably reduced sends, a sampling generator that is connected to an elec- Irish voltage actuated the voting unit. A functional design of the object that this periodically the tuning of the receiver consists of that in the case of a radio catcher With a certain frequency interval receiver for frequency or phase modulation the changed, and an identification device holding control signal directly from the demodulator for the freenl, when receiving an identification sequence or phase modulated oscillation without signals from the demodulator a control signal using some separate frequency decan supplies the sampling generator so that the abortion is obtained. keys completely ceases, thereby identifying the automatic tuning of receivers for indicates that the wireless and wired information transfer from the frequency detector sent control signal in an adder supply is often extremely useful. For example at the reception of a radio transmission by the FM receiver is added to the signal sent by the sampling generator becomes, in such a way that during the time 35 catcher in a motor vehicle it is in particular on in which the frequency detector sends the control signal- long journeys in which the coverage areas det, the speed of the radio stations can be driven through quickly with the help of the Ab-, sehi tastgeneralors generated tuning change irritating, if one is forced from time to time is reduced considerably. Hand with the tuning button an audible 2. The arrangement according to claim 1 thereby requiring to search. The automatic voting indicates that in a radio receiver is also of great importance z. B. at a for frequency or phase modulation the control two-way radio link where the requirements signal directly from the demodulator (D) for the fre- an the frequency accuracy are very high and where frequency or phase modulated oscillation without any complicated use of crystals some separate frequency control is needed. The same goes for the detector is obtained. Receipt of information via cable. The present solution to such an arrangement is based on the fact that those different the main or secondary radio stations that are to be received 40 are caught, send out an identification signal according to the arrangement. The invention relates to an arrangement for self-tuning make transmitter search in a receiver for wired further explained in connection with radio receivers, loose or wired information transmission where FIG. 1 is a block diagram and FIG. B. radio transmitters, for a pewisses 45 embodiment shows in detail. There are frequency band, which receiver a tuning unit to see in it the units that characterize a licit, an intermediate frequency amplifier and a conventional radio receiver demodulator and also a frequency, namely a tuning unit A, an intermediate detector, which when receiving z. B. a radio signal frequency amplifier M and a demodulator D. Weiin the frequency band transmits a control signal, a 50 terhin an additional device, according to the scan generator, the shown with an electrical chip invention from a scan generator S the tuning voltage operated so that this consists, which via an adding device B activates the tuning of the receiver in a tuning unit A periodically, so that it periodically changes the specific frequency interval, and contains a tuning of the receiver in a specific identification device that changes the frequency interval when receiving. Upon occurrence of an identification signal from the demodulation signal, which is loud enough for it to supply a control signal to the sampling generator from the lator, the receiver will receive it in this interval so that the sampling stops completely. can, a control signal from the frequency de- The known arrangements of this type, see the tcktor F sent via the adding device B to the Ab-DAS 1 171 964, British patent specification 549 771, "ra- 60 tuning unit A , which signal during the dio mentor" 1% (>, booklet 12, page 999, and "Electro-Zeit, in which it is received, considerably the geniuses", July 1966, issue 14, pages 179/180, use the speed of this voting change per time, although already identifying social media, but probably reduced that from the scanning generator .V you cannot be sure that the radio will work properly. tion of an automatic reconciliation between 65 If the received transmission continues Transmitters, because possibly the speed of the identification signal contains such a type that it contains a Vote when passing through a frequency, on identification device / actuated, which with tier a transmission takes place is too high. Using a received identification signal