JP4077248B2 - On-premise TV system, encryption issuing device and indoor terminal - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a private television system for viewing a television broadcast on a television receiver installed in each guest room or hospital bed of a hotel, inn, hospital, etc., and an encryption issuing device and an indoor terminal used in this system.
[0002]
[Prior art]
In general, if a television receiver is installed in each guest room or hospital bed in a hotel, inn, hospital, etc. On-site television distribution systems have been put into practical use, in which some of the paid broadcasts are managed and supplied in a batch so that the individual television receivers can freely watch these broadcasts.
[0003]
However, for example, as a method of charging for the above-mentioned pay broadcast in the on-site television distribution system installed in the hotel, the system configuration is such that it can be recognized by the distribution network parent device installed at the front of the hotel. In the above, the user pays the fee at the front desk at checkout, or the prepaid card sold by the vending machine installed in the hotel building is inserted into the card reader installed for each TV receiver. There was a method of reading the authentication information.
[0004]
[Problems to be solved by the invention]
With the former method of settlement at the front desk, the front desk work of the hotel becomes busy, and it may be difficult to use depending on the contents of pay broadcasting.
[0005]
In addition, the latter method of selling prepaid cards can be easily used by customers, and is excellent in terms of labor saving because there is no need for hotel front work, but on the other hand, magnetic cards, etc. It is necessary to sell and collect prepaid cards that consist of, and there is a considerable cost in terms of facilities and operations, including equipment such as card readers installed in the vending machines and individual TV receivers. There was a problem that caused.
[0006]
The present invention has been made in view of the above-mentioned circumstances, and the purpose of the present invention is many without reducing the cost of facilities and operation as much as possible without the need for human intervention such as hotel front work. It is to provide a local television system, a cipher issuance device, and an indoor terminal capable of making a profit by making it easy for a person to use it and collecting the profit with certainty.
[0007]
[Means for Solving the Problems]
The invention described in claim 1 is a fee collection unit for collecting a fee, a first encryption calculation unit that corresponds to the collection by the fee collection unit and calculates encryption information by a predetermined algorithm based on input information; And a cipher issuing device comprising an output means for outputting the cipher information calculated by the first cipher calculating means, a specifying means for designating pay TV broadcast viewing, and the first cipher calculating means based on correct input information A second cipher calculation means for calculating cipher information with the same algorithm, an input means for inputting cipher information, and the cipher information input by the input means and the cipher information calculated by the second cipher calculation means are matched. And a plurality of indoor terminals provided with permission means for permitting viewing of pay TV broadcasts according to the determination result of the determination means.
[0008]
With such a system configuration, it is possible for many people to reduce the management cost required for issuance and collection of billing information media such as prepaid cards without the need for human resources such as hotel front work. By using it casually, it becomes possible to increase the profit and reliably collect the profit.
[0009]
According to a second aspect of the invention, in the first aspect of the invention, the output means prints out the calculated encryption information on a sheet.
[0010]
With such a system configuration, in addition to the operation of the first aspect of the invention, the encryption information is not only displayed on the display unit but also printed out by a simple printer mechanism, so that the encryption information is displayed to the user. Therefore, it is possible to avoid unnecessary troubles in system operation such as user's memory mistakes.
[0011]
The invention described in claim 3 is characterized in that, in addition to the operation of the invention described in claim 1, the input means inputs encryption information by a key operation with a remote controller provided in the indoor terminal.
[0012]
With such a system configuration, in addition to the operation of the first aspect of the invention, encryption information can be input with an operation feeling equivalent to channel selection or the like without requiring a special input device. Therefore, it can be used easily by users while greatly reducing the equipment cost.
[0013]
According to a fourth aspect of the present invention, in the first aspect of the invention, the indoor terminal is configured to count the number of times when the determination unit determines that the two pieces of encrypted information do not match, and the counting unit. And a prohibiting means for prohibiting viewing of pay TV broadcasting when the count value at the means reaches a predetermined number.
[0014]
With such a system configuration, in addition to the operation of the first aspect of the invention, it is possible to reliably increase profits by restricting the input of illegal encryption information.
[0015]
The invention described in claim 5 corresponds to the fee collection means for collecting the fee, the receipt by the fee collection means, and the input information is transmitted to the private television distribution network master unit to be described later, and in response to the information, A cipher issuing device having an output means for outputting cipher information given from a local television distribution network, a specifying means for designating viewing of pay TV broadcast, and a plurality of indoor terminals having an input means for inputting cipher information; The cipher issuance device and the plurality of indoor terminals are connected via a local television distribution network, and the cipher information is calculated by a predetermined algorithm based on the information input by the cipher issuance device, to the cipher issuance device When cipher information is input from the first cipher issuing means to be returned and the input means of the indoor terminal, the same algorithm as the first cipher issuing means is based on the correct input information corresponding to the indoor terminal. A second cipher issuing means for calculating cipher information in a rhythm; a judging means for determining a match between the cipher information input by the input means of the indoor terminal and the cipher information calculated by the second cipher issuing means; and And a local television distribution network parent device including permission means for permitting viewing of pay TV broadcasts in the indoor terminal in accordance with the determination result of the determination means.
[0016]
With such a system configuration, it is possible for many people to reduce the management cost required for issuance and collection of billing information media such as prepaid cards without the need for human resources such as hotel front work. In addition to making it possible to raise profits by using it casually and recovering the profits reliably, the encryption issuing device and the plurality of indoor terminals are used as simple input / output terminals for encryption information. In addition, since the local TV distribution network master unit manages the calculation of encryption information and the coincidence determination, the system management operation such as algorithm change setting can be simplified.
[0017]
According to a sixth aspect of the present invention, in the first aspect of the present invention, the first and second cipher calculation means use at least a room number and date information of a room in which the indoor terminal is installed to encrypt information. Is calculated.
[0018]
With such a system configuration, in addition to the operation of the invention described in claim 1, different room numbers are used while using only simple information that can be definitely input by the customer, such as a room number. By invalidating the use of encryption information created with date information and date information, it is possible to reliably increase profits.
[0019]
The invention described in claim 7 is a fee collection unit for collecting a fee, a cryptographic calculation unit corresponding to the collection by the fee collection unit and calculating cryptographic information by a predetermined algorithm based on input information, Output means for outputting the cryptographic information calculated by the cryptographic calculation means.
[0020]
With such a configuration, the administrative cost required for issuing and collecting billing information media such as prepaid cards can be sufficiently reduced without the need for human resources such as hotel front work, and more people can be received. You can use it casually and be sure to collect the profits.
[0021]
The invention described in claim 8 is a specifying means for specifying viewing of pay TV broadcasting, a cipher calculating means for calculating cipher information with a predetermined algorithm based on correct input information, an input means for inputting cipher information, A determination unit for determining whether the encryption information input by the input unit matches the encryption information calculated by the encryption calculation unit; and a permission unit for permitting viewing of the pay TV broadcast according to the determination result of the determination unit. It is characterized by that.
[0022]
With such a configuration, many people can easily use it without the need for manual operations such as a hotel front desk.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment in the case where the present invention is applied to a hotel on-site television distribution network system will be described below with reference to the drawings.
[0024]
FIG. 1 shows the configuration of the entire system, and 11 is a head-end device that supplies television broadcasting. The headend device 11 includes a receiver for transmitting video and audio signals for pay broadcasting, and receivers for general terrestrial broadcasting, CS (Communications Satellite) broadcasting, BS (Broadcasting Satellite) broadcasting, and the like. And the respective channel frequency signals are synthesized to generate and output a broadcast signal in which a large number of programs are centrally arranged on the respective channel frequencies on a carrier wave.
[0025]
The broadcast signal output from the head-end device 11 is connected to a guest room terminal 13 installed for each guest room via a local television distribution network (referred to as “CCTV network” in the figure) 12 configured by a coaxial line. Is done.
[0026]
The guest room terminal 13 is directly connected to the television receiver 14, and selects and demodulates one channel from the broadcast signals sent via the local television distribution network 12, and the obtained video signal The audio signal is output to the television receiver 14 to be output.
[0027]
The guest room terminal 13 also performs power supply control of the television receiver 14 and confirmation of encrypted billing authentication information (hereinafter referred to as “encrypted information”) for viewing pay broadcasts. These television receivers 14 are turned on / off, input of encryption information, which will be described later, and the like are all performed in response to key operations on the remote control pad 15 attached to the guest room terminal 13.
[0028]
The remote control pad 15 is a power key for turning on / off the power of the television receiver 14, a channel selection key for selecting all channels including a pay broadcast channel including a numeric keypad, and a pay broadcast. A confirmation key for confirming the sound volume, a volume key for adjusting the volume, and a mute key for temporarily stopping the output of the audio signal.
[0029]
Further, a local TV distribution network (CCTV) base unit 16 is installed, for example, at the front of the hotel so as to be interposed between the headend device 11 on the local TV distribution network 12 and the guest room terminal 13 of each guest room.
[0030]
This on-site television distribution network parent device 16 regulates a part of the operation of the guest room terminal 13 such as prohibiting viewing of a pay broadcast channel designated by an adult, or receives a request from the guest room to control the remote control pad 15. Each guest room terminal 13 is managed in an integrated manner, such as remotely operating the guest room terminal 13 instead of the operation, and the operation status is grasped.
[0031]
In this hotel premises, for example, in an elevator hall, an automatic issuing machine 17 for issuing the password is installed, and encryption information corresponding to the guest room terminal 13 of each guest room is issued for a fee with a preset amount. .
[0032]
FIG. 2 shows a detailed circuit configuration of the automatic issuing machine 17, with the control unit 21 as a center, the control unit 21 includes a display unit 22, a printer 23, a keyboard 24, a bill collection unit 25, and a cryptographic operation unit 26. And a timer 27 are connected.
[0033]
The control unit 21 includes a CPU, a ROM, a RAM as a work memory, and the like, and controls all operations in the automatic issuing machine 17 related to the issuance of cryptographic information, which will be described later.
[0034]
The display unit 22 includes, for example, a color liquid crystal display panel, a backlight device, and their drive circuits, and displays various guide messages related to the issuance of encryption information.
[0035]
The printer 23 is a printing mechanism that prints out only a series of encryption information on a piece of paper having a width of 4 to 5 [cm] that is provided in a general cash register machine, for example.
[0036]
The keyboard 24 is a numeric keypad for inputting a user's room number when issuing encryption information.
[0037]
The banknote receiving unit 25 receives a preset fee based on viewing of a pay broadcast channel, for example, 1000 yen / night with banknotes.
[0038]
The cryptographic operation unit 26 calculates cryptographic information using a preset algorithm using the user's room number and date information input from the keyboard 24.
[0039]
The timer 27 performs a time measuring operation so that the same date information is used from the check-in time to the check-out time of the next day, and the date information is sent to the cryptographic operation unit 26 via the control unit 21. Supply.
[0040]
Next, a detailed circuit configuration of the guest room terminal 13 will be described with reference to FIG. In the figure, reference numeral 31 denotes a control unit comprising a CPU, a ROM, a RAM as a work memory, and the like. This control unit 31 receives a key operation from the remote control pad 15 received and decoded by an Ir receiving unit 35 to be described later. It controls all operations related to the issuance of television broadcasts viewed on the television receiver 14 in response to signals. In addition, a tuner 32, a demodulation unit 33, a modulation unit 34, a timer 36, and a cryptographic operation unit 37 is connected.
[0041]
The tuner 32 selects a downstream channel television broadcast on a carrier wave distributed via the local television distribution network 12, modulates it into an intermediate frequency signal, and sends it to the demodulator 33.
[0042]
The demodulator 33 demodulates the intermediate frequency signal supplied from the tuner 32 to extract a television broadcast video signal and an audio signal, and supplies them to the television receiver 14.
[0043]
For example, when the modulation unit 34 determines that the guest room terminal 13 is intended to be used with illegal encryption information, a signal requesting to temporarily stop a part of the operation of the guest room terminal 13 is set in advance. The channel frequency is modulated and sent to the local television distribution network 12.
[0044]
The Ir receiving unit 35 receives an infrared modulation signal accompanying the key operation on the remote control pad 15, demodulates it, decodes the operated key content, and outputs it to the control unit 31.
[0045]
Similarly to the timer 27 of FIG. 2, the timer 36 performs a time counting operation such that the time from the check-in time to the check-out time of the next day is the same date information, and the date information is transmitted to the control unit. The data is supplied to the cryptographic operation unit 26 via 21.
[0046]
The cryptographic operation unit 37 uses the room number of the room in which the guest room terminal 13 is installed and the date information from the timer 36 using the same preset algorithm as the cryptographic operation unit 26 of FIG. Cryptographic information is calculated.
[0047]
Next, the operation of the above embodiment will be described.
First, an operation when a guest room user of this hotel receives issuance of encryption information by the automatic issuing machine 17 in order to view paid channel broadcasts will be described.
[0048]
FIG. 4 shows the contents of processing by the control unit 21 in the automatic issuing machine 17, and at the beginning of the processing, it is determined whether or not a prescribed fee has been received depending on whether or not the banknote receiving unit 25 has inserted cash. Is repeated to wait for the receipt (step A01).
[0049]
If it is determined in step A01 that the specified fee has been received, the display unit 22 displays a guide message that prompts the user to input the room number and accepts key input from the keyboard 24 to allow the user to input a predetermined number of digits. The room number is input by the numerical value (step A02).
[0050]
When the room number is input, the control unit 21 reads the date information measured by the timer 27, and uses a predetermined algorithm based on the input room number and date information, for example, 6 digits. The cipher information is calculated using a digit value (step A03).
[0051]
Then, only the calculated encryption information is printed out by the printer 23 (step A04), and the series of processes is completed as described above, and the process returns to the process from step A01 to prepare for the next user.
[0052]
Next, a description will be given of an operation when a guest room user of this hotel who has received the password information for a fee as described above returns to his / her room and views the pay channel broadcast.
[0053]
FIG. 5 shows the processing contents for viewing on the pay broadcast channel by the control unit 31 in the guest room terminal 13, and at the beginning of the processing, whether or not the pay broadcast channel was specified by a key operation on the remote control pad 15. (Step B01), or by repeatedly determining whether or not the check-out time has come due to the time measured by the timer 36 (step B02), the system waits for these states.
[0054]
If it is determined in step B02 that the check-out time has come, the flag register F, which is stored in the control unit 31 at that time and indicates that the charge processing of the pay broadcast channel has been confirmed, is cleared. "0" (step B03), and in addition, an initial value "0" is given to a counter n for counting the number of times of illegal input of encryption information, also held in the control unit 31 (step B04), and again The process returns to step B01.
[0055]
When it is determined in step B01 that a pay broadcast channel has been designated, the control unit 31 next determines whether or not the flag register F is “0” indicating that charging processing has not been confirmed at that time. (Step B05).
[0056]
Here, when it is determined that the flag register F is “0”, the room number of the room set in advance and the date information timed by the timer 36 are read out, and the automatic issuing machine 17 The encryption information is calculated by a predetermined number of digits, for example, a 6-digit numerical value, by the same preset algorithm as that of the cryptographic operation unit 26 (step B06).
[0057]
At the same time, while the screen including the guide message for confirming that the designated broadcast channel is specified is displayed on the television receiver 14 (step B07), any key operation corresponding to the menu is performed by the remote controller. Waiting to be performed from the pad 15 (step B08).
[0058]
FIG. 6A illustrates a guide message displayed on the screen of the television receiver 14 at this time. The remote control pad 15 is used when confirming that the designated channel is a pay broadcast. When the confirmation key is changed to another channel, the user is prompted to operate the key of the desired channel number.
[0059]
If any key operation is performed here, it is determined whether or not it is confirmed that the operation shifts to viewing of the pay broadcast channel depending on whether or not the operated key is the “confirm” key (step B09). ).
[0060]
If it is determined that a key other than the “confirm” key has been operated, a channel change process corresponding to a key operation for changing to another channel is performed (step B10). Then, the process returns to the above-described step B01 to prepare for the designation of the pay broadcast channel again.
[0061]
If it is determined in step B09 that the “confirm” key has been operated, the process proceeds to a state for inputting the encryption information issued by the automatic issuing machine 17 (step B11).
[0062]
FIG. 6 (2) illustrates an input state of the encryption information displayed on the screen of the television receiver 14, and displays a guide message for inputting the issued encryption, and the number of input digits. A cursor indicating the status is displayed.
[0063]
When encryption information of a predetermined number of digits is input with the numeric keypad of the remote control pad 15 in accordance with this display, it is determined whether or not the input encryption information matches the correct encryption information calculated in step B06 (step B12). .
[0064]
Here, when it is determined that the two pieces of encryption information match and the correct encryption information has been input by the user, the user has been properly issued the encryption information by the automatic issuing machine 17. Then, after setting “1” in the flag register F (step B13), as shown in FIG. 6 (3), the program shifts to viewing of the pay broadcast channel (step B14). Wait until a key operation for changing or turning off the power of the television receiver 14 is performed on the remote control pad 15 (step B15), and when the key operation is performed, the processing from step B01 is performed. Return to.
[0065]
If it is determined that the encryption information input in step B12 does not match the correct encryption information calculated in step B06, the count value of the counter n is updated by “+1” (step B16). ), It is determined whether or not the count value of the updated counter n has reached a predetermined number of times, for example, “4” (step B17).
[0066]
Here, if the count value of the counter n has not reached “4”, a message indicating that the input password information is incorrect is once displayed on the television receiver 14 with a guide message (step B18). ), And again proceeds to input of encryption information from step B11.
[0067]
If it is determined in step B17 that the count value of the counter n has reached "4", the user designates the pay broadcast channel without receiving the encryption information from the automatic issuer 17. The modulation unit 34 determines in advance that a request signal for temporarily freezing a part of the operation of the guest room terminal 13, specifically, the viewing on the pay broadcast channel, is automatically determined. After modulating the frequency of the set up channel and flowing it to the local television distribution network 12 (step B19), after displaying on the screen of the television receiver 14 by a guide message that it is necessary to contact the front of the hotel together (Step B20), the process returns to Step B01 again.
[0068]
In this case, a request signal for temporarily freezing the viewing of the pay broadcast channel from the guest room terminal 13 is received by the local TV distribution network master unit 16 installed at the front of the hotel via the local TV distribution network 12 and automatically In particular, a process for blocking the pay broadcast downlink channel transmitted to the guest room terminal 13 of the guest room is executed.
[0069]
However, at the hotel front desk, when there is a notification from the guest room that the viewing on the pay broadcast channel has been temporarily frozen, the automatic issuing machine 17 takes precautions to urge the issuance of pay encryption information. It is assumed that the frozen state can be released by manual operation of the local television distribution network base unit 16.
[0070]
In this way, within the range of regular use environment, the management cost required for the issuance and collection of billing information media such as prepaid cards is sufficiently reduced without human intervention like hotel front work. By making many people feel free to use it, it is possible to increase the profit and reliably collect the profit.
[0071]
In addition, in the above embodiment, the automatic issuing machine 17 does not simply display the issued encryption information on the display unit 22, but memorizes the encryption information to the user by printing it out with a simple printer mechanism or the like. This makes it possible to avoid unnecessary troubles in system operation such as user's memory mistakes, without forcing the burden of having them refrain from taking notes or taking notes.
[0072]
Further, in the above embodiment, the encryption information is input by key operation on the remote control pad 15 attached to the television receiver 14, so that no special input device is required and channel selection is performed. Since the encryption information can be entered with the same operational feeling as the above, the user can easily use it while greatly reducing the equipment cost.
[0073]
Furthermore, in the above-described embodiment, illegal encryption information input is counted, and the pay broadcast viewing is temporarily frozen when the count value reaches a predetermined number. Therefore, by restricting the input of illegal encryption information, it is possible to surely increase profits.
[0074]
In the above embodiment, when the cryptographic information is issued, the user inputs only the room number and the cryptographic information is obtained by an algorithm using the room number and date information read from the timer 27. Is to be calculated.
[0075]
Therefore, by using simple information that can be entered without error by the user, invalidating the use of encryption information created with different room numbers and date information, it is possible to increase profits reliably. Become.
[0076]
In addition, although the said embodiment demonstrated the case where it applied to the premises television delivery network system of a hotel, this invention is not restricted to this, Television broadcasting is carried out with the television receiver installed in every hospital bed, such as a hospital. Of course, the present invention is also applicable to a local television distribution network system for viewing.
[0077]
In the above embodiment, the head-end device 11, the local TV distribution network master unit 16, and the guest room terminal 13 of each guest room are connected via the local TV distribution network 12, while the automatic issuing machine 17 Although it has been described that it is not connected to the local TV distribution network 12, the automatic issuer 17 can also be connected to the local TV distribution network 12 to collectively manage algorithms related to the issuance and calculation of encryption information from the local TV distribution network master unit 16. Thus, when the above algorithm is illegally decoded, the algorithm can be updated and set very easily.
[0078]
Furthermore, by connecting individual devices to the local television distribution network 12 in this way, processing such as issuance of encryption information and determination of coincidence is not performed by the automatic issuing machine 17 or the guest room terminal 13 which are individual terminals. These terminals may be used as simple input / output devices, and all processing such as specific encryption information issuance and coincidence determination may be performed by the local television distribution network base unit 16.
[0079]
Then, the automatic issuing machine 17 or the guest room terminal 13 of each guest room is used as a simple input / output terminal for encryption information, and the local TV distribution network master unit 16 centrally manages the calculation of encryption information, determination of coincidence, and the like. System management such as algorithm change settings can be simplified.
[0080]
In addition, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.
[0081]
Further, the above embodiments include inventions at various stages, and various inventions can be extracted by appropriately combining a plurality of disclosed constituent elements. For example, even if some constituent elements are deleted from all the constituent elements shown in the embodiment, at least one of the problems described in the column of the problem to be solved by the invention can be solved, and described in the column of the effect of the invention. In a case where at least one of the obtained effects can be obtained, a configuration in which this configuration requirement is deleted can be extracted as an invention.
[0082]
【The invention's effect】
According to the first aspect of the present invention, a large number of people can be obtained without a manual operation such as a front desk of a hotel and while sufficiently reducing the management cost required for issuing and collecting a billing information medium such as a prepaid card. It is possible to make it easy for users to use it and raise its profits and reliably collect those profits.
[0083]
According to the second aspect of the present invention, in addition to the effect of the first aspect of the invention, the encryption information is not only displayed on the display unit but also printed out by a simple printer mechanism, so that the user can be encrypted. Unnecessary troubles in system operation such as user's memory mistakes can be avoided without forcing the burden of refraining from information.
[0084]
According to the third aspect of the present invention, in addition to the effect of the first aspect of the present invention, it is possible to input the cryptographic information with an operation feeling equivalent to channel selection without requiring a special input device. Therefore, users can easily use it while greatly reducing the equipment cost.
[0085]
According to the invention described in claim 4, in addition to the effect of the invention described in claim 1, it is possible to reliably increase profits by restricting the input of illegal encryption information.
[0086]
According to the invention described in claim 5, a large number of people can be obtained without a manual operation such as a front desk of a hotel and while sufficiently reducing the management cost required for issuing and collecting a billing information medium such as a prepaid card. In addition to making it possible to make profits and recovering the profits by using them casually, the cipher issuing device and the multiple indoor terminals are used as simple input / output terminals for cipher information. In addition, since the local TV distribution network master unit manages the calculation of encryption information and the coincidence determination, the system management operation such as algorithm change setting can be further simplified.
[0087]
According to the invention described in claim 6, in addition to the effect of the invention described in claim 1, a different room is used while using only simple information that can be definitely input by the customer such as a room number. By revoking the use of encryption information created with numbers and date information, it is possible to increase profits.
[0088]
According to the seventh aspect of the present invention, the management cost required for issuing and collecting a billing information medium such as a prepaid card can be sufficiently reduced without the need for human resources such as a hotel front desk service. It can be used easily by people and the profits can be reliably collected.
[0089]
According to the eighth aspect of the present invention, many people can easily use it without having to go through the work of a hotel front desk.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of an entire system according to an embodiment of the present invention.
FIG. 2 is a block diagram showing a detailed circuit configuration of the automatic issuing machine according to the embodiment.
FIG. 3 is a block diagram showing a detailed circuit configuration of the guest room terminal according to the embodiment.
FIG. 4 is a flowchart showing processing contents at the time of issuing a cipher in the automatic issuing machine according to the embodiment;
FIG. 5 is a flowchart showing processing contents when a pay broadcast channel is designated in the guest room terminal according to the embodiment;
FIG. 6 is a view exemplifying initial screen display contents when a pay broadcast channel is specified according to the embodiment;
[Explanation of symbols]
11 ... Headend equipment
12 ... on-site television distribution (CCTV) network
13 ... Guest room terminal
14 ... TV receiver
15. Remote control pad
16 ... Local TV distribution network (CCTV)
17 ... Automatic issuing machine calculation
21 ... Control unit
22 ... Display section
23 ... Printer
24 ... Keyboard
25 ... Banknote receiving part
26 ... Cryptographic operation part
27 ... Timer
31 ... Control unit
32 ... Tuner
33. Demodulator
34. Modulation section
35 ... Ir receiver
36 ... Timer
37 ... Cryptographic operation section

Claims (8)

A fee collection unit for collecting a fee, a first encryption calculation unit that corresponds to the collection by the fee collection unit, calculates encryption information by a predetermined algorithm based on input information, and the first encryption calculation unit A cipher issuing device comprising an output means for outputting the cipher information calculated in
Designating means for designating viewing of pay TV broadcast, second cipher calculating means for calculating cipher information based on correct input information by the same algorithm as the first cipher calculating means, input means for inputting cipher information, Determining means for determining the coincidence between the cipher information input by the input means and the cipher information calculated by the second cipher calculating means, and a permitting means for permitting viewing of pay TV broadcast according to the determination result of the determining means And a plurality of indoor terminals. 2. The private television system according to claim 1, wherein the output means prints out the calculated encryption information on a sheet. 2. The private television system according to claim 1, wherein the input means inputs cryptographic information by a key operation with a remote controller provided in the indoor terminal. The indoor terminal is
A counting means for counting the number of times when the determination means determines that the two pieces of encryption information do not match;
2. The private television system according to claim 1, further comprising prohibiting means for prohibiting viewing of pay TV broadcast when the count value of the counting means reaches a predetermined number. Toll collection means for collecting charges, corresponding to receipt by this toll collection means, the input information is transmitted to a private television distribution network base unit to be described later, and the encryption given from the private television distribution network in response thereto A cipher issuing device comprising an output means for outputting information;
A plurality of indoor terminals equipped with a designation means for designating viewing of pay TV broadcasting and an input means for inputting encryption information;
Connected to the cipher issuing device and the plurality of indoor terminals via a local television distribution network, calculates cipher information using a predetermined algorithm based on information input by the cipher issuing device, and returns the cipher information to the cipher issuing device When the cryptographic information is input from the first cipher issuing means and the input means of the indoor terminal, the cipher information is obtained with the same algorithm as the first cipher issuing means based on the correct input information corresponding to the indoor terminal. A second cipher issuing means for calculating, a determining means for determining a match between the cipher information input by the input means of the indoor terminal and the cipher information calculated by the second cipher issuing means, and A local television system comprising: a local television distribution network parent device including permission means for permitting viewing of pay TV broadcast on the indoor terminal according to the determination result. The private television system according to claim 1, wherein the first and second cipher calculation means calculate cipher information using at least a room number and date information of a room in which the indoor terminal is installed. Toll collection means to collect charges,
In response to receipt by the fee collection means, encryption calculation means for calculating encryption information with a predetermined algorithm based on input information;
An encryption issuing device comprising: output means for outputting encryption information calculated by the encryption calculation means. A designation means for designating pay TV broadcast viewing;
Cryptographic calculation means for calculating cryptographic information with a predetermined algorithm based on correct input information;
An input means for inputting encryption information;
A determination means for determining a match between the encryption information input by the input means and the encryption information calculated by the encryption calculation means;
An indoor terminal comprising: permission means for permitting viewing of pay TV broadcast according to a result of determination by the determination means.

Images