WO1985005524A1 - Installation de television de location - Google Patents

Installation de television de location Download PDF

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Publication number
WO1985005524A1
WO1985005524A1 PCT/EP1985/000226 EP8500226W WO8505524A1 WO 1985005524 A1 WO1985005524 A1 WO 1985005524A1 EP 8500226 W EP8500226 W EP 8500226W WO 8505524 A1 WO8505524 A1 WO 8505524A1
Authority
WO
WIPO (PCT)
Prior art keywords
television
television set
terminals
electronics
terminal
Prior art date
Application number
PCT/EP1985/000226
Other languages
German (de)
English (en)
Inventor
Karlheinz Liebe
Herbert Eder
Werner Distler
Original Assignee
Karlheinz Liebe
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Karlheinz Liebe filed Critical Karlheinz Liebe
Publication of WO1985005524A1 publication Critical patent/WO1985005524A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/16—Analogue secrecy systems; Analogue subscription systems
    • H04N7/162—Authorising the user terminal, e.g. by paying; Registering the use of a subscription channel, e.g. billing

Definitions

  • the invention relates to a rental television system, in particular for hospitals, old people's homes, sanatoriums, hotels and the like, with a central point as a master terminal and with a number of television sets, the central point being set up in such a way that each individual television set is coded for a predetermined time by means of signals can be switched on, and wherein each television set is assigned a decoder for the coded signals.
  • Such a rental television system for hotel motel operations is known from US Pat. No. 3,882,392.
  • the TV signals are transmitted from a central station to a plurality of receivers via a cable, ie the conventional television antenna is connected to the central station.
  • the installation of these necessary cables between the central station and the receivers alone results in a considerable amount of material and labor.
  • a decoder is provided in each room of the hotel in question, in which there is a receiver or a television set, but this decoder is only intended to enable the hotel guest to switch on additional, non-standard television programs on the television set.
  • the central station outputs signals in succession via cables, which are repeated over and over again for a predetermined time, so that the reception of the additional program is only possible during the duration of these signals.
  • the frequency of the normal power network is the basis for the known system the release signals sent and received used.
  • counters for the predetermined reception time are located both at the central station and at the receivers.
  • the clock of all meters is derived from the frequency of the local electricity network and the switch-on signals are controlled synchronously.
  • a cable television system with subscriber connections that can be switched off is known, the main feature of which is that the television programs are not being transmitted via antenna trunk lines to the subscriber connections, but rather through separate underground or in the connected houses or residential units cables to be installed. It is a large-scale system that cannot be regarded as a rental television system in the above sense, because the connected television sets belong to the residents and correspond to the usual commercial televisions, so they do not require any retrofitting or the like for connection to the cable television system.
  • the known cable television system also has a central head-end station, which, as already mentioned, is connected to a multiplicity of subscriber connections via cables of a one- or two-way network.
  • a central data processing system is also provided for sending subscriber-specific control signals for the selective connection or disconnection of individual subscriber connections.
  • the subscriber lines which depart from a common multiple distributor are grouped together to form one or more structural units.
  • the microcomputer is arranged in the area of the multiple distributor and is connected to the central data processing system. In this system, not only can the individual subscriber connections be selectively switched on and off, but frequency-selective disconnection of individual channel signals to the subscriber connections is also possible. Depending on the connection and disconnection, a fee entry is also possible, but primarily for longer periods of months or years, but not for short operating times as with rental television systems.
  • a rental communication system is known from US Pat. No. 3,751,670, which is also intended, inter alia, for television transmission.
  • This system works with optical means, ie coded and focused light rays of the visible or invisible waveband are emitted from a distribution station, which is set up on a house, for example, directed to the television subscribers concerned, for example directed through the window of a subscriber. There the light beams are decoded so that the television program appears in picture and sound on a conventional television set.
  • the television subscriber can by optical signals inform the distribution station which program it wishes to receive. In the distribution station, the costs for each participant are calculated according to the period of use.
  • the invention has for its object to provide a rental television system that can be installed quickly, easily and inexpensively and which prevents any manipulation of the television sets.
  • the decoders are designed as release electronics and are installed in each television set in question, that the decoders are connected to the central point only via a standard antenna trunk line installed in the building, and that each decoder in the television set is assigned additional audio transmission electronics which interacts with an audio receiver located outside the television.
  • FIG. 1 shows a block diagram of a system with up to eight terminals and with up to two hundred and fifty television sets
  • FIG. 2 shows a block diagram corresponding to FIG. 1, but in another Representation
  • Fig. 3 is a block diagram of a television billing central terminal
  • Fig. 4 is a circuit diagram of a release electronics
  • Fig. 5 is a circuit diagram of a transmission elec
  • Fig. 6 is a circuit diagram of a receiving part.
  • the system has a television accounting system with a coin unit or a coin-operated machine and with a banknote checker. Conventional devices can be used for the coin machine and the banknote validator.
  • At least one central office or terminal is provided for the television accounting system. This central office releases the television sets to be rented after payment of the rental price.
  • Up to seven extension terminals can be connected to the central office as the master terminal. The number of extension terminals depends on the spatial conditions. If e.g. a hospital has several buildings, it is advisable to set up a terminal in each building. The same may also apply to several floors of a building, whereby a terminal can be provided on each floor.
  • the up to eight terminals are electrically connected to each other, in such a way that if one
  • Terminals the others remain operational.
  • any television set can be released from each individual terminal after payment of the rental price.
  • the terminals are set up so that each can control up to approximately two hundred and fifty television sets.
  • Each terminal is equipped with a keypad with the key numbers 0 to 9 so that the number of the television set to be rented can be entered on this keypad.
  • the rental price is based on the specified times, e.g. 20 minutes, 1 hour, 1 week etc., whereby the entry is advantageously limited to a maximum of seven time units.
  • Every tenant receives a receipt at the terminal with the date, duration, TV number and rental price. Then the respective television set is ready for operation and can be operated at the meter's discretion.
  • the rental period is not to be influenced, for example by switching off the television.
  • Each terminal is set up in such a way that it can generate and transmit a free pulse in the form of a modulated and coded high-frequency carrier for each connected television set.
  • This activation pulse is transmitted via a common electrical line that establishes the connection between the relevant central unit (terminal) and all television sets. An existing or created antenna trunk line system is used for this electrical line.
  • the activation pulse is decoded in the television.
  • the television set in question switches itself off after about 10 minutes.
  • the television set in question is ready for operation again, provided that the selected time unit has not yet expired.
  • the system according to the invention advantageously includes a wireless audio transmission, expediently an FM-modulated infrared transmission from the respective television set to the tenant, e.g. to the bed of a patient, where it can be fed into an existing ELA system or a separate receiving part can be present.
  • the system according to the invention essentially consists of the following assemblies, which interact with one another: a) at least one central point (terminal), b) release electronics (decoding) for the television set, which is arranged in each television set, c) transmission electronics ( Audio) in each television set, d) Receiving part (audio) and TV control unit for each television set, with the release electronics of all television sets via a common antenna system provided in the building, with the central office, namely with the master terminal are connected.
  • the individual modules are explained in more detail below.
  • the master terminal is electrically connected to the extension terminals 2 to 8, with a mains supply being provided.
  • the terminals are labeled FAT 01.
  • a coaxial line goes from the master terminal to an antenna trunk line, which in turn is connected to the individual television sets TV 001 to TV 250 (FIG. 1) or FAS 01 (FIG. 2), in other words the release electronics of the respective television sets TV .
  • Each terminal can control the television sets connected to the system.
  • the activation takes place via a modulated and coded high-frequency carrier, which is fed into the antenna trunk line system.
  • the activation signal is repeated periodically for a certain time for each rented television set, so that it is ensured that in the event of manipulations or if the antenna is not plugged in, the rented television set switches off after about ten minutes. If the television set is reconnected to the antenna trunk line system, the intended rental time is not changed and the unit switches on again with the next activation signal.
  • the restart time can also be set to a maximum of seven minutes.
  • each terminal can also be designed so that the rental period can be called up according to the time of day, i.e. that the rental period begins and ends at a certain pre-selected time of day.
  • An automatic money counter can be connected to at least one terminal for the system distributor, optionally with a printout of the total amount of income over certain periods per terminal or the total amount based on the individual television sets.
  • FIG. 3 illustrates in the block diagram a central point, also called a master terminal or a central terminal, which essentially follows Assemblies has:
  • CPU card the CPU card is built with a real time, 8 k-ROM, 8 k-C-MOS RAM, 2 x V 24 interface and a PIO (3 x 8 bit).
  • An external battery can be connected via an ECB bus for data backup.
  • the CPU card is connected to the rest of the system via an ECB bus.
  • Interface card on the interface card, the line distribution, 1 x PIO with 2 x 8 bit boards driver, decoder, modulator and the interrupt distribution is built.
  • the switching power supply has the technical data: 5 V / 5 A; 12 V / 1 A; - 12 V / 1 A and a 28 V / 2 A power supply unit
  • Display unit the display unit consists of a 20-digit 5 x 7 dot matrix (DMG 205).
  • Coin validator a common device with a money return is used as a coin validator.
  • the control electronics are attached separately to the individual elements.
  • Banknote checker or bill reader unit a commercially available device is used for this.
  • Printer the printer is used to issue receipts and has a cut-off device. It is controlled via a serial interface on the CPU card.
  • Input unit the input unit consists of four time booking keys and twelve keys in the block for entering, correcting and confirming the television number.
  • de Terminals are installed in a sheet steel housing.
  • the sheet steel housing advantageously has a desk-like shape, is attached to a steel base and is operated in a stationary manner.
  • the individual electronic modules are housed in a BUS housing and wired with ribbon cables.
  • Fig. 4 shows a circuit diagram of an embodiment of a release electronics.
  • Such release electronics is shown in FIG. 1 in every television set.
  • the respective release electronics is designated FAS 01 and has only been drawn separately to clarify the electrical connection between the antenna trunk line and the respective television set TV.
  • the release electronics are expediently installed in the respective television set together with the transmission electronics explained below, so that, if necessary, this electronics can be dismantled or easily replaced.
  • the release electronics receives the signal coded by the respective central station or terminal and releases the television set for reception for a fixed time, so that the television set is ready for operation.
  • the tenant can now use a normal TV Operate the remote control individually for the respective television programs or, if available, for an audio transmission.
  • the readiness for operation on the television is advantageously indicated by a green signal lamp.
  • the television can be used immediately after it is ready for operation, since the television works without a start-up time of the picture tube, ie in stand-by mode.
  • the central terminal is designed so that it periodically sends the activation signal to the configured television set. The operational readiness of each television set depends on the time selected at the terminal.
  • the incoming AM-modulated and coded signal reaches the input resonant circuit L1 and C21 via C20. This has its maximum at the transmission frequency 40.68 MHz. The selected transmission frequency is still below TV channel 1 and therefore does not affect these or live channels.
  • the integrated circuit TCA 440 contains a regulated RF pre-stage, mixer, a separate oscillator and a controllable IF amplifier.
  • the integrated oscillator is connected by a quartz Q1 40, 225 MHz. This results in an IF of 455 kHz.
  • the resonant circuit L2 and C24 is tuned to the oscillator frequency of 40.225 MHz.
  • the IF signal that is coupled out after the mixer (point 15) passes through L3 on the selective filter F1 to the integrated IF amplifier (point 12).
  • the amplified IF (455 kHz) is demodulated via D20, R23 and C29.
  • L4 has its maximum at 455 kHz.
  • a DC voltage component for control is fed to the IF amplifier (point 9) via R24.
  • R28 and R29 form a voltage divider for the 1/2 LM 358 connected as a comparator.
  • the threshold voltage is 100 mV, which corresponds to an input voltage of 20 ⁇ V. These 20 ⁇ V can still be completely demodulated by the receiving circuit. In this way it can be excluded that weak signals, which are not exactly decoded, cause interference.
  • the second comparator 1/2 LM 358 also has a voltage divider R27 and R30. The values are dimensioned such that approx. 70 to 80% of the maximum reference voltage are sufficient to switch the comparator. The comparator always switches at the same point, even when the amplitude changes from 100 to 70%. C33 improves the rising and falling edge of the output signal.
  • the diodes D21 and D22 are used to block the DC voltage.
  • FIG. 5 shows a circuit diagram of an exemplary embodiment of a transmission electronics, namely an infrared transmitter.
  • the transmission electronics are located together with the release electronics in each television set (Fig. 1). Only for the sake of clarity, the transmission electronics in Fig. 2 with connection to each television set has been drawn separately and labeled FAÜ 01.
  • the transmission electronics modulates the television sound on an infrared signal and sends this to the reception electronics in the reception part which will be explained in more detail below, which is located within easy reach of the tenant, for example on a patient's bed.
  • the TV sound in the television set can be set to a certain volume, e.g. room volume, or the speaker transmission can be omitted entirely.
  • the tenant can switch the loudspeaker on or off using a remote control in a known manner.
  • the sound transmitted to the receiver can also be switched off at the receiver.
  • the infrared signal preferably has the following technical features: wavelength 950 nm, beam strength 20 to 30 mW / sr and frequency range 100 to 10,000 Hz.
  • the transmission electronics can be switched so that it either works in stand-by mode or is activated when the television is switched on.
  • the heart of the infrared transmitter is the LM 566 integrated circuit. It contains an oscillator, externally connected by the RC element R12, R13 and C7, and an FM module lator.
  • the NF arrives at point 5 of the LM 566 via R 7, R8, C5, R9 and C6.
  • the capacitor C5 serves to raise the high frequencies (pre-emphasis).
  • the stroke is set with resistor R9. It is 4.5 kHz.
  • the carrier frequency is set to 100 kHz by R12, R13 and C7.
  • the resistors R10 and R11 serve as a voltage divider for the input, which has a reaction of the oscillator frequency.
  • R 16 and C9 block the operating voltage.
  • the frequency-modulated signal reaches the base of the transistor T4 via R14 and C8, further via a colector to T3.
  • the collector is connected to three duo-luminescent diodes D2, D3, D4.
  • the emitted radiation in the near infrared range of 950nm reaches an average radiation intensity of about 16 mW / sr per duo diode, determined by R17.
  • the basic series resistor R15 is at connection point 5 in TV mode at + 12.6 V and in standby mode at OV, thus the closed circuit current is kept low.
  • the power supply unit consisting of a transformer (220 / 15V; 110 mA), a rectifier and an integrated circuit 7812 for voltage stabilization and hum suppression, supplies the operating voltage of 12 V.
  • the current consumption is approximately 90 mA during operation and approximately 15 mA when stationary. by operation.
  • the demodulated coded signal reaches the Bu 1 and from there to the MM 53200 integrated circuit.
  • This chip is used here as a decoder used. Via the connections 1 - 12 the
  • the internal oscillator of the MM 53200 is external via the
  • the oscillator frequency is set at 40 kHz, as is that of the coding IC. If this now sends a signal with which the code is transmitted with a certain pulse ratio, the IC MM 53200 recognizes the coded signal set for it and switches the output at point 17 to ground (low active).
  • the timer IC 555 switched as a retriggerable monoflop, switches its output at point 3 to high if the trigger input at point 2 is low and keeps it low, in the time selected by the RC element R1, C1 and C2.
  • the output is connected to a light-emitting diode (LED) D1, which signals that the television set has been released.
  • LED light-emitting diode
  • the logic consists of four NOR elements, whereby the following conditions are to be met: 1. Activation of the television set by coded signal from the terminal via MM 53200 and TimerIC 555 for all programs or 2. Activation of the 16th TV program by Remote control of the TV.
  • the output at point 3 of the IC 555 is high, the output at point 11 of the NOR gate is low, i.e. the transistor T2 is blocked and the switching transistor in the television set is not blocked. Or connections 3 and 4 are high, i.e. Point 4 and point 3 of the NOR gates are low and point 10 high. This lowers point 11 and T2 is blocked. With any other program, T2 conducts, the switching transistor in the television blocks and the television switches to standby mode, unless a coded signal is present.
  • the system according to the invention further comprises a receiving part (audio) and a television control unit belonging to each television set.
  • a remote control for the television set and an infrared receiver with connected headphones are shown in simplified form.
  • the corresponding receiving part with control electronics with the respective mains supply is shown in simplified form and is designated by FAB 01.
  • the receiver and control panel are within the tenant's reach; eg in hospitals at the patient's bedside.
  • the control electronics which will be explained in more detail below, receives the LF signal transmitted by the television set via the transmission electronics, amplifies it and distributes it to two volume-controlled earphones.
  • the era part essentially consists of an infrared receiver and a NF amplifier and the NF feed can either be carried out via an existing PA system or a separate housing with the associated volume control and high-pitch connector can be provided.
  • the control electronics there is a power supply unit for the built-in electronics and for the chained infrared remote control.
  • mechanical screening can be provided as an anti-theft device.
  • Figure 6 shows a circuit diagram of an embodiment of a receiving part (audio) or an infrared receiver.
  • the principle of operation is as follows.
  • the incoming frequency modulated signal with fT 100 kHz and 4.5 kHz
  • the TBA 120 S integrated circuit contains an eight-stage amplifier with a symmetrical coincidence demodulator for amplifying, limiting and demodulating frequency-modulated signals.
  • the decoupled LF signal is set externally to the desired volume using a trimmer R 6.
  • R5 and C5 are used to block the operating voltage.
  • C8 forms the de-emphasis with the integrated resistor.
  • the two capacitors C9 and C10 are dimensioned such that about 250 mVpp are in resonance at the resonant circuit L2 and C11. This is demodulated via C 12 LF signal decoupled. R7, C13, R8 and C14 form a double low pass to block RF components.
  • the TBA 800 is a monolithically integrated series push-pull B power amplifier.
  • R11 and C19 block the operating voltage, C15, R9, C18 and R12 are used for negative feedback and RF suppression.
  • the signal is coupled out via C 20.
  • One to four headphones can be connected to ports 1 and 2.
  • the power supply consisting of a transformer (220/18 V; 90 mA), rectifier and an integrated circuit 7818 as voltage stabilization and hum suppression, supplies the operating voltage of 18 V.
  • the current consumption of the circuit is approximately 30 mA during operation.
  • the capacitors C23, C24, C25 and C26 are used to suppress interference.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Selective Calling Equipment (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

Installations de télévision de location, en particulier pour des hôpitaux, des asiles de vieillards, des sanatoriums, des hôtels et autres, possédant une station centrale servant de terminal maître et un certain nombre d'appareils de télévision, où la station centrale est disposée de telle manière que chaque appareil de télévision peut être enclenché au moyen de signaux codés pendant un laps de temps prédéterminé et où chaque appareil de télévision comporte un décodeur pour les signaux codés. Afin de permettre un montage rapide, simple et bon marché de l'installation de télévision de location et d'empêcher toute manipulation des appareils de télévision, on propose d'utiliser des décodeurs conçus en tant que dispositifs électroniques de libération et de les placer dans chaque appareil de télévision concerné, en outre de relier les décodeurs à la station centrale exclusivement par une conduite habituelle de tronc d'antenne installée dans le bâtiment et de doter chaque décodeur des appareils de télévision d'un dispositif électronique supplémentaire de transmission audio collaborant avec une partie de réception audio disposée à l'extérieur de l'appareil de télévision.
PCT/EP1985/000226 1984-05-18 1985-05-14 Installation de television de location WO1985005524A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3418505.4 1984-05-18
DE19843418505 DE3418505C1 (de) 1984-05-18 1984-05-18 Mietfernsehanlage

Publications (1)

Publication Number Publication Date
WO1985005524A1 true WO1985005524A1 (fr) 1985-12-05

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ID=6236219

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1985/000226 WO1985005524A1 (fr) 1984-05-18 1985-05-14 Installation de television de location

Country Status (3)

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EP (1) EP0215784A1 (fr)
DE (1) DE3418505C1 (fr)
WO (1) WO1985005524A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2631467A1 (fr) * 1988-05-10 1989-11-17 Kuhn Jean Marie Dispositif central d'autorisation de fonctionnement individuel de plusieurs appareils de location disperses
FR2655447A1 (fr) * 1989-12-01 1991-06-07 Kuhn Jean Marie Procede de gestion centralisee et dispositif pour la mise en óoeuvre de ce procede.
WO2003047254A1 (fr) * 2001-11-21 2003-06-05 General Instrument Corporation Technique et systeme de securisation de decodeurs multiples attribues a un seul client

Citations (5)

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Publication number Priority date Publication date Assignee Title
US3882392A (en) * 1973-01-29 1975-05-06 Oak Industries Inc Hotel-motel pay TV system
US3899633A (en) * 1972-05-12 1975-08-12 Columbia Pictures Ind Inc Subscription television system
US3916091A (en) * 1973-01-31 1975-10-28 Columbia Pictures Ind Inc Electronic communications system for supplementary video program distribution
FR2320600A2 (fr) * 1972-04-20 1977-03-04 Cit Alcatel Systeme de memorisation et de traitement d'informations telles que des taxes
EP0052822A2 (fr) * 1980-11-21 1982-06-02 AVM Schmelter GmbH & Co. KG Procédé, arrangement et dispositif pour la mise en opération d'un appareil de télévision dans une institution médicale

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3751670A (en) * 1971-05-11 1973-08-07 Telebeam Corp Subscription communication system
DE2725250C3 (de) * 1977-06-03 1982-03-18 Siemens AG, 1000 Berlin und 8000 München Kabelfernsehanlage mit abschaltbaren Teilnehmeranschlüssen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2320600A2 (fr) * 1972-04-20 1977-03-04 Cit Alcatel Systeme de memorisation et de traitement d'informations telles que des taxes
US3899633A (en) * 1972-05-12 1975-08-12 Columbia Pictures Ind Inc Subscription television system
US3882392A (en) * 1973-01-29 1975-05-06 Oak Industries Inc Hotel-motel pay TV system
US3916091A (en) * 1973-01-31 1975-10-28 Columbia Pictures Ind Inc Electronic communications system for supplementary video program distribution
EP0052822A2 (fr) * 1980-11-21 1982-06-02 AVM Schmelter GmbH & Co. KG Procédé, arrangement et dispositif pour la mise en opération d'un appareil de télévision dans une institution médicale

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Radio Industria, Volume 43, Nr. 5, May 1976, MILANO (IT) "Sound Transmission using Infrared Radiation", pages 49-52, see figures 1, 2 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2631467A1 (fr) * 1988-05-10 1989-11-17 Kuhn Jean Marie Dispositif central d'autorisation de fonctionnement individuel de plusieurs appareils de location disperses
EP0346254A1 (fr) * 1988-05-10 1989-12-13 Jean Marie Kuhn Dispositif central d'autorisation de fonctionnement individuel de plusieurs appareils de location dispersés
FR2655447A1 (fr) * 1989-12-01 1991-06-07 Kuhn Jean Marie Procede de gestion centralisee et dispositif pour la mise en óoeuvre de ce procede.
WO2003047254A1 (fr) * 2001-11-21 2003-06-05 General Instrument Corporation Technique et systeme de securisation de decodeurs multiples attribues a un seul client
US8068610B2 (en) 2001-11-21 2011-11-29 General Instrument Corporation Method and system for providing security within multiple set-top boxes assigned for a single customer

Also Published As

Publication number Publication date
DE3418505C1 (de) 1985-12-05
EP0215784A1 (fr) 1987-04-01

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