SI23944A - The device for noninvasive detecting of the stage of recording mode of videocassette recorder - Google Patents
The device for noninvasive detecting of the stage of recording mode of videocassette recorder Download PDFInfo
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- SI23944A SI23944A SI201100424A SI201100424A SI23944A SI 23944 A SI23944 A SI 23944A SI 201100424 A SI201100424 A SI 201100424A SI 201100424 A SI201100424 A SI 201100424A SI 23944 A SI23944 A SI 23944A
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- signal
- frequency
- recorder
- mixing circuit
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- 230000001939 inductive effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 5
- 239000000523 sample Substances 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 101001059930 Drosophila melanogaster Transcription factor kayak, isoforms A/B/F Proteins 0.000 description 1
- 101001059931 Drosophila melanogaster Transcription factor kayak, isoforms D/sro Proteins 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/29—Arrangements for monitoring broadcast services or broadcast-related services
- H04H60/32—Arrangements for monitoring conditions of receiving stations, e.g. malfunction or breakdown of receiving stations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/27—Arrangements for recording or accumulating broadcast information or broadcast-related information
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
Priprava kot senzor obsega tuljavo (Co), ki je pritrjena na zunanji površini snemalnikove hrbtne stene blizu snemalnikove brisalne glave. Ojačeni tuljavin signal se vodi na prvi vhod mešalnega vezja (MC), na katerega drugi vhod je priključen signalni generator (SG). Izhod mešalnega vezja (MC) je priključen na nizkopasovni prepustni filter (LPF) z vršno frekvenco pri 1 kHz. Frekvenca izhodnega signala signalnega generatorja (SG) je nastavljena tako, da frekvenca v signalu (fdss) na izhodu mešalnega vezja (MC), ki je enaka razliki frekvenc vhodnih signalov v mešalno vezje (MC), leži znotraj nizkofrekvenčnega prepustnega pasu filtra (LPF). Frekvenca izhodnega signala signalnega generatorja (SG) je nastavljiva na frekvence v intervalu od 13 kHz do 119 kHz. Priprava po izumu se lahko uporabi za videokasetni snemalnik poljubne vrste. Namestitev pripravinega senzorja se izvede hitro in na estetski ter preprost način.The device as a sensor comprises a coil (Co) that is attached to the outer surface of the recorder's back wall near the recorder's wiper head. The reinforced coil signal is fed to the first input of the mixing circuit (MC), to which the second input is a signal generator (SG). The output of the mixing circuit (MC) is connected to a low passband filter (LPF) with a peak frequency at 1 kHz. The frequency of the output signal of the signal generator (SG) is set so that the frequency in the signal (fdss) at the output of the mixing circuit (MC) equal to the difference in the input signals to the mixing circuit (MC) lies within the low pass filter pass filter (LPF) . The frequency signal of the output signal of the signal generator (SG) is adjustable at frequencies in the interval from 13 kHz to 119 kHz. The device according to the invention can be used for a videocassette recorder of any kind. Installation of the Ready Sensor is carried out quickly and in aesthetic and simple manner.
Description
Izum se nanaša na pripravo za nevdomo zaznavanje stanja snemalnega načina pri videokasetnem snemalniku, pri čemer priprava obsega senzor za zaznavanje magnetnega polja, ki ga seva brisalna glava videokasetnega snemalnika, ko je ta v stanju snemalnega načina. Predlagana priprava je predvidena kot del sistema za telemetrično ugotavljanje gledanosti televizijskih oddaj v gospodinjstvih.The invention relates to a device for the non-manual detection of the recording mode status of a video cassette recorder, the device comprising a magnetic field sensing sensor emitted by the wiping head of the video cassette recorder when the recording mode is in the recording mode. The proposed preparation is envisaged as part of a telemetry rating system for household television broadcasts.
Izum je po mednarodni klasifikaciji patentov uvrščen v razred H 04N 05/76.According to the international patent classification, the invention is classified in class H 04N 05/76.
Omenjena priprava kot del sistema za telemetrično ugotavljanje gledanosti televizijskih oddaj v gospodinjstvih omogoča določiti stanje snemalnega načina videokasetnega snemalnika, torej videosnemalnika na zapisovalni trak.Said preparation, as part of a telemetry rating system for household television shows, allows determining the status of the recording mode of a video cassette recorder, that is, a video tape recorder.
Gledana televizijska oddaja se namreč po dogovoru snema. Snemanje v videokasetnem snemalniku pa se izvaja, tako da brisalna glava briše zapisovalni trak, na katerega se zatem zapiše vsebina televizijske oddaje.Namely, the TV show being watched is recorded by appointment. Recording in a videotape recorder is carried out so that the wiping head deletes the recording tape, to which the contents of the television show are then recorded.
• ·• ·
Za brisanje brisalna glava tvori izmenično magnetno polje, ki se tudi v okolici brisalne glave zazna kot močan magnetni signal s frekvenco med 30 kHz in 100 kHz, in sicer je ta frekvenca različna pri videokasetnih snemalnikih različnih izdelovalcev. Vsi videokasetni snemalniki so opremljeni s hrbtno steno iz umetne snovi, ki ne zadrži magnetnega polja.For wiping, the wiping head forms an alternating magnetic field, which, even in the vicinity of the wiping head, is detected as a strong magnetic signal with a frequency between 30 kHz and 100 kHz, which is different for video cassette recorders from different manufacturers. All videotape recorders are equipped with a plastic back wall that does not hold the magnetic field.
Omenjena priprava zazna, ali je videokasetni snemalnik v stanju snemanja, s tem da ugotovi, ali je prisotno močno izmenično magnetno polje v okolici njegove brisalne glave. Omenjeno zaznavanje se izvede na nevdoren način, saj s pripravo io ni treba poseči v videokasetni snemalnik; ni je treba priključiti nanj.Said device detects whether the videotape recorder is in recording state by determining whether a strong alternating magnetic field is present in the vicinity of its wiping head. The aforementioned detection is carried out in a non-striking manner, since the preparation of io does not necessitate encroachment on a videotape recorder; no need to plug into it.
Poznana je priprava za določanje stanja delovanja videokasetnega snemalnika (US 5.165.069), v kateri senzor zaznava sevani magnetni signal snemalnikove brisalne glave med brisanjem traku. Na 70 kHz uglašena senzorjeva sonda se namesti v bližino videokasetnega snemalnika. Zaznani signal se ojači in se digitalizira, nakar se obdela v mikroprocesorju. Priprava je torej prirejena za videokasetni snemalnik določene vrste. Monter takšne priprave mora biti torej za delo na terenu opremljen z različnimi senzorskimi sondami, saj tam naleti na videokasetne snemalnike različnih izdelovalcev.A device for determining the state of operation of a videotape recorder (US 5,165,069) is known in which the sensor detects the radiated magnetic signal of the recorder's wiper head while erasing the tape. A 70 kHz tuned sensor probe is placed near the videotape recorder. The detected signal is amplified and digitized and then processed in the microprocessor. The device is therefore adapted for a videotape recorder of a certain type. The installer of such a device must therefore be equipped with various sensor probes for field work, since it encounters videotape recorders from different manufacturers.
Naloga izuma je, predlagati takšno pripravo za nevdomo zaznavanje stanja snemalnega načina pri videokasetnem snemalniku, da bo ne glede na frekvenčni spekter magnetnega polja brisalne glave v videokasetnem snemalniku poljubne vrste, ki se pojavljajo pri gledalcih televizije, izhodni signal predlagane priprave pred digitaliziranjem v vnaprej predvidenem nizkem frekvenčnem pasu, senzor za zaznavanje sevanega magnetnega polja pa naj bo na preprost način nameščen glede na omenjeno brisalno glavo.It is an object of the invention to propose such a device for the non-home detection of the recording mode of a video cassette recorder such that regardless of the frequency spectrum of the magnetic field of the wiping head in the video cassette recorder of any kind appearing on television viewers, the output signal of the proposed preparation before digitization will be provided in advance. the low frequency band, and the sensor for detecting the radiated magnetic field should be easily positioned relative to said wiping head.
• ·• ·
Navedena naloga je rešena s pripravo po izumu za nevdomo zaznavanje stanja snemalnega načina pri videokasetnem snemalniku, opredeljeno z značilnostmi iz označujočega dela prvega patentnega zahtevka, podzahtevka pa opredeljujeta varianti izvedbenega primera.The aforementioned task is solved by the preparation according to the invention for non-domicile recording of the recording mode of a videotape recorder, defined by the features of the marking part of the first patent claim, and the sub-claim defines embodiments of an embodiment of the case.
Z izumom predlagana priprava za nevdomo zaznavanje stanja snemalnega načina pri videokasetnem snemalniku predstavlja cenovno zelo ugodno tehnično rešitev, ki se lahko uporabi za videokasetni snemalnik poljubne vrste, ki se pojavljajo pri gledalcih televizije. Izhodni signal na ugoden način leži v nizkem frekvenčnem pasu, s čimer se zmanjša občutljivost na elektromagnetne motnje iz okolice. Namestitev pripravinega senzorja za zaznavanje izmeničnega magnetnega polja na zunanjo površino snemalnikove hrbtne stene se izvede hitro in na estetski ter pre15 prost način.The invention proposes a device for the non-domestic sensing of the recording mode of a video cassette recorder, which is an inexpensive technical solution that can be used for video cassette recorders of any kind, which appear in television viewers. The output signal is conveniently located in the low frequency band, thus reducing the sensitivity to electromagnetic interference from the environment. The placement of the standby sensor for detecting the alternating magnetic field on the outer surface of the recorder's back wall is quickly and aesthetically and pre15 free.
Izum je v nadaljnjem obrazložen na osnovi opisa izvedbenega primera priprave po izumu za nevdomo zaznavanje stanja snemalnega načina pri videokasetnem snemalniku ter pripadajočega načrta, ki prikazuje na sl. 1 na shematičen način vezje te priprave po izumu.The invention is further explained on the basis of a description of an embodiment of the device according to the invention for in-house detection of the state of the recording mode of the video cassette recorder and the corresponding plan, which shows in Figs. 1 is a schematic diagram of a circuit of this device according to the invention.
Priprava po izumu za nevdomo zaznavanje stanja snemalnega načina pri vi25 deokasetnem snemalniku je sestavni del merilne priprave MD za telemetrično ugotavljanje gledanosti televizijskih oddaj.The device according to the invention for the in-house sensing of the recording mode of a vi25 tape recorder is an integral part of the MD measuring device for the telemetric determination of television broadcast ratings.
Induktivni senzor Co, ki zaznava izmenično magnetno polje delujoče snemalnikove brisalne glave, je na znan način priključen na ojačevalnik A (Sl. 1).The inductive sensor Co, which detects the alternating magnetic field of the active wiper recorder, is connected to amplifier A in a known manner (Fig. 1).
Z izumom se predlaga, daje omenjeni induktivni senzor tuljava Co.The invention proposes that said inductive coil sensor Co.
Tuljava Co z induktivnostjo 3,5 mH je izdelana kot plošnata tuljavica s 5 premerom 22 mm in višino 1 mm s 700 ovoji. Opremljena je z uporom z upornostjo 16 kfi, da se zmanjša vpliv parazitne kapacitivnosti priključnega kabla.The Co coil with an inductance of 3.5 mH is made as a flat coil with 5 diameters of 22 mm and a height of 1 mm with 700 coils. It is equipped with a resistor with a resistance of 16 kfi to reduce the impact of the parasitic capacitance of the connecting cable.
Izhod omenjenega ojačevalnika A je priključen na prvi vhod mešalnega vezjaThe output of said amplifier A is connected to the first input of the mixing circuit
MC. Izhod signalnega generatorja SG je priključen na drugi vhod mešalnega io vezja MC. Iz mešalnega vezja MC izstopa signal fdss, katerega spekter obsega razliko in vsoto frekvenc v to vezje vstopajočih signalov.MC. The output of the SG signal generator is connected to the second input of the mixing io circuit of the MC. The fdss signal exits the mixing circuit MC, whose spectrum comprises the difference and sum of the frequencies in this circuit of the input signals.
Frekvenca fg izhodnega signala gs signalnega generatorja SG je nastavljena tako, da frekvenca df v signalu fdss na izhodu mešalnega vezja MC, ki je enaka razliki is frekvenc vhodnih signalov v mešalno vezje MC, leži znotraj nizkofrekvenčnega prepustnega pasu nizkopasovnega prepustnega filtra LPF.The frequency fg of the output signal gs of the signal generator SG is set so that the frequency df in the fdss signal at the output of the mixing circuit MC, which is equal to the difference from the frequencies of the input signals to the mixing circuit MC, lies within the low-pass bandwidth of the low pass LPF filter.
Izhodni signal fdss je odporen na zunanje elektromagnetne motnje, ker je vsakič zajet le ozek pas frekvenc okoli frekvence magnetnega polja snemalnikove bri20 salne glave.The fdss output signal is resistant to external electromagnetic interference because only a narrow band of frequencies around the magnetic field frequency of the recorder's shaver head is captured each time.
Vršna frekvenca fp omenjenega nizkofrekvenčnega prepustnega pasu nizkopasovnega prepustnega filtra LPF je enaka 1 kHz, njegova zgornja in spodnja mejna frekvenca pa sta 2 kHz oziroma 0,39 kHz.The peak frequency fp of said low pass bandwidth of the low pass LPF filter is 1 kHz and its upper and lower cutoff frequencies are 2 kHz and 0.39 kHz respectively.
Frekvenca fg izhodnega signala gs signalnega generatorja SG je v korakih poThe frequency fg of the output signal gs of the signal generator SG is in steps of
0,414 kHz nastavljiva v frekvenčnem intervalu od 13 kHz do 119 kHz.0.414 kHz tunable in the 13 kHz to 119 kHz frequency range.
Frekvenca fg izhodnega signala gs signalnega generatorja SG se pri obravnavanem videokasetnem snemalniku vsakič nastavi tako, da je omenjena frekvenca df, ki je enaka razliki frekvenc vhodnih signalov v mešalno vezje MC, v signalu fdss na izhodu mešalnega vezja MC enaka 1 kHz.The frequency fg of the output signal gs of the signal generator SG is set at each video cassette recorder such that the said frequency df, which is equal to the difference of the frequencies of the input signals into the mixing circuit MC, in the fdss signal at the output of the mixing circuit MC is equal to 1 kHz.
Izhod mešalnega vezja MC je preko nizkopasovnega prepustnega filtra LPF priključen na vezje za nadaljnjo obdelavo signala. Prepuščeni izhodni signal dfos s frekvenco v omenjenem nizkofrekvenčnem pasu se najprej digitalizira in se nato obdela v omenjenem vezju obsežnejše merilne priprave MD za telemetrijo gledanosti televizijskih programov.The output of the MC mixing circuit is connected to the circuit for further signal processing via a low pass LPF filter. The omitted dfos output signal with a frequency in said low-frequency band is first digitized and then processed in said circuit by a larger MD measuring apparatus for telemetry of television programs.
Tuljava Co se namesti na videokasetnem snemalniku, s tem da se prilepi na zunanji površini snemalnikove hrbtne stene blizu omenjene snemalnikove brisalne glave. Hrbtna stena je pri vseh poznanih videokasetnih snemalnikih iz umetne snovi.Coil Co is mounted on a videotape recorder by adhering to the exterior surface of the recorder's back wall near said recorder's wiper head. The back wall is of all known plastic tape recorders.
Nastavitev priprave po izumu za nevdomo zaznavanje snemalnega načina pri videokasetnem snemalniku se izvede na naslednji način.The setting of the device according to the invention for the in-house detection of the recording mode of the video cassette recorder is as follows.
Videokasetni snemalnik se zažene v snemalnem načinu. Tuljava Co se postavi k snemalniku v bližino njegove brisalne glave. Spreminja se frekvenca fg izhodnega signala gs signalnega generatorja SG, da se najde frekvenca fg z največjim odzivom. Če je magnetno polje brisalne glave zelo šibko, se dvigne pokrov prostora za kaseto in se tuljava postavi v neposredno bližino brisalne glave, da se določi frekvenca izmeničnega magnetnega polja brisalne glave. Izhodni signal cs tuljave Co se ojači toliko, daje ojačeni signal acs primeren za nadaljnjo obdelavo. Kočno se tuljava Co prilepi na zunanjo površino hrbtne stene videokasetnega snemalnika.The cassette recorder starts in recording mode. Coil Co is placed near the recorder near its wiper head. The frequency fg of the output signal gs of the signal generator SG is varied to find the frequency fg with the maximum response. If the magnetic field of the wiper head is very weak, lift the lid of the cassette compartment and place the coil in close proximity to the wiper head to determine the frequency of the alternating magnetic field of the wiper head. The Co cs output signal of the Co coil is amplified so that the amplified acs signal is suitable for further processing. The Co coil is attached to the outer surface of the back wall of the videotape recorder.
Claims (3)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI201100424A SI23944A (en) | 2011-11-09 | 2011-11-09 | The device for noninvasive detecting of the stage of recording mode of videocassette recorder |
| EP11468005.1A EP2592770A1 (en) | 2011-11-09 | 2011-11-10 | Device for a non-intrusive detection of a recording operational mode status of a video cassette recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI201100424A SI23944A (en) | 2011-11-09 | 2011-11-09 | The device for noninvasive detecting of the stage of recording mode of videocassette recorder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SI23944A true SI23944A (en) | 2013-05-31 |
Family
ID=45443018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SI201100424A SI23944A (en) | 2011-11-09 | 2011-11-09 | The device for noninvasive detecting of the stage of recording mode of videocassette recorder |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP2592770A1 (en) |
| SI (1) | SI23944A (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6256094A (en) * | 1985-09-03 | 1987-03-11 | Video Res:Kk | Detecting system for picture recording/reproducing data of video tape recorder |
| US5165069A (en) | 1990-07-30 | 1992-11-17 | A. C. Nielsen Company | Method and system for non-invasively identifying the operational status of a VCR |
| US5495282A (en) * | 1992-11-03 | 1996-02-27 | The Arbitron Company | Monitoring system for TV, cable and VCR |
-
2011
- 2011-11-09 SI SI201100424A patent/SI23944A/en not_active IP Right Cessation
- 2011-11-10 EP EP11468005.1A patent/EP2592770A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| EP2592770A1 (en) | 2013-05-15 |
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| OO00 | Grant of patent |
Effective date: 20130612 |
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| SP73 | Change of data on owner |
Owner name: NIELSEN LAB, D.O.O.; SI Effective date: 20130710 |
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| KO00 | Lapse of patent |
Effective date: 20211116 |