JPH01301430A - Information transmitter - Google Patents

Abstract

PURPOSE:To facilitate the subscription broadcasting service by requesting for receival of a key signal from each terminals to a central controller and allowing the program watched or heard by the key signal when the chargeable program is watched or heard using the terminals provided for the seats in an airplane or so. CONSTITUTION:When a subscription broadcasting program is watched or heard, receival of key signal is requested for from the terminals 6a... of seats 9a... to the center controller 1 and when the key signal is received as an allowance signal, the subscription broadcasting program may be watched or heard so that the program of the selected item is transmitted from VTR 11 to 17. The master controller 19 of the central controller 1 counts the sum of the charge of the subscription broadcasting program displays both the message of requesting the payment of the sum by the operation on a keyboard 20 and the sum on a monitor 21, and has a printer 22 hardcopies the sum. By such simple constitution, the subscription broadcasting service may be executed and the charge payment be facilitated.

Description

[Detailed description of the invention] The present invention will be explained in the following order.

A. Field of industrial application B. Overview of the invention C. Prior art D. Problem to be solved by the invention E. Means for solving the problem F. Effect G. Embodiment G1 Description of the central control unit G2 Description of the terminal device G3 Description of the terminal device Explanation during operation H Effect of the invention 8. Industrial application field The present invention is applicable to, for example, a device for transmitting video signals, etc. from a central control device to a terminal device provided for each passenger seat of an aircraft, train, bus, etc. The present invention relates to an information transmission device suitable for use.

B. Summary of the Invention The present invention provides an information transmission device that transmits video signals of multiple channels from a central control device to a plurality of terminal devices provided for each passenger seat of an aircraft, train, bus, etc. A pay broadcast channel is provided as a video signal channel for the pay broadcast channel, and by transmitting a selection signal for the pay broadcast channel from each terminal device to the central control device, the central control device supplies a key signal to the corresponding terminal device to select the pay broadcast channel. Channel's? By allowing M@, pay broadcasting services can be easily provided without using special equipment.

C. Prior Art For example, U.S. Pat. No. 4,647,980 teaches providing separate video displays for passenger seats in vehicles such as aircraft. That is, video displays as terminal devices are individually installed in the passenger seats, and a plurality of video signals are transmitted in parallel from a central control unit to these video displays, and each video display side:
One of the signals is selected and displayed.

D Problems to be Solved by the Invention By the way, the programs that can be viewed on each terminal device of such a transmission system include free programs that can be viewed on any terminal device, and programs that require a special fee to be viewed. In some cases, a paid program may be available. When this paid program is broadcast on general cable television broadcasting, etc., the video signal of the paid program is scrambled in a predetermined manner, and only when the paid program is permitted to be viewed is it sent to each terminal device (receiver). A descrambling device was installed to remove this scramble, making it possible to watch paid programs.

However, if such scrambled transmission were to be applied to the transmission system in the aircraft as described above, it would be necessary to install many descramble devices corresponding to many seats (terminal devices) within the limited space of Kinai. However, there are disadvantages in that the configuration becomes complicated and the weight and cost of the system increase. Further, it is inconvenient that it is time-consuming to check whether or not a paid broadcast will be viewed for each seat where an unspecified number of passengers are seated, and then bill the viewing fee.

SUMMARY OF THE INVENTION In view of the above points, it is an object of the present invention to provide an information transmission device in a vehicle that can easily provide a pay broadcast service.

E! ll! Means for Solving the Problems The information transmission device of the present invention provides, for example, as shown in FIGS. 1 and 3, a central control device (from 11 to each of the plurality of seats, jM Keraleta?J
T number ('11!Final fffi (6a), (6b
), (6c), etc., in the fR information transmission device, sending means (11) for sending a plurality of programs to the central control device.

(12), (13), and means (15) for transmitting a pay broadcast program different from the plurality of programs;
(16).

(17), a storage means (24) for a menu including pay TV items, and a plurality of terminal devices (6a), (6a)
.

(6c) A master controller (19) that generates a key signal that enables reception of pay broadcasting and display of its channels, and a plurality of terminal devices (6a) that transmit a plurality of programs, pay broadcast programs, and key signals to... .

(6b), (6c)... Transmission means (10).

<28), (29), and a plurality of terminal devices (6a), (6b), (6c)”
, a video display means (63) for displaying a plurality of programs, a pay broadcast program, and a menu, an operation key (67) for selecting a desired item from the menu, and a plurality of programs and a channel for the pay broadcast program. channel display means (67a) for selecting a desired program from a plurality of programs and pay broadcast programs; terminal side transmitting means (7a) for transmitting the information to the central control device;
(7b), (7c)'' and a plurality of terminal devices (6a), (6b), (6c)''.
When a paid broadcasting item is selected using the operation key (67), a key signal is transmitted from the central control unit (11) to the corresponding terminal device, and the corresponding terminal device receives the paid broadcasting program and displays the channel. Further, in the information transmission device of the present invention, a master controller (19) as a charge calculation means is provided in the central control device (1), and the master controller (19)
9), charges are made to the terminal device that selects the pay broadcast item using the operation key (67).

F. Function According to the information transmission device of the present invention, when viewing a pay broadcast program, each terminal device (6a).

(6b), (6c)... to the central control unit (
11 is requested to transmit a key signal, and when this key signal is transmitted as a permission signal, IS of this pay broadcast program becomes possible. Therefore, viewing of pay broadcast programs can be controlled on the central control device (1) side, and each terminal device (6a)
, (6b), (6c) ``Paid broadcasting services can be realized with a simple, compact, and easy-to-use configuration without the need for special equipment such as a descrambler on the central control unit +1) side. In order to control the broadcasting service, the master controller (19) serving as a fee calculation means of the central control device 1.1) can total up viewing fees for pay broadcast programs, and it does not take much time to collect fees.

G. Embodiment Hereinafter, one embodiment of the information transmission device of the present invention will be described with reference to the accompanying drawings.

This example is a transmission device that transmits video signals, audio signals, etc. inside an aircraft.

Description of G1 Central Control Unit First, the central control unit will be explained. In Figure 1, (1
1 indicates a central control device installed in a crew cabin, etc., and this central control device (1) has seven video tape recorders (
(hereinafter referred to as VTR). That is, the glSl, second and third tape cassettes on which movies and the like are recorded are loaded.
NoV'1R (11), (12) and (13),
In this example, each of the VTRs (11) to (14) is equipped with an override VTR (14) loaded with a tape cassette recording instructions on how to put on a life jacket, etc.
As a reproduction signal, a video signal and a three-channel (three types) audio signal synchronized with the video signal are used. As the audio signals of these three channels, for example, it is possible to obtain monaural audio in the three languages that correspond to the movie, or to obtain one
It is conceivable to obtain a stereo sound of a Chinese language and a monaural sound of another Chinese language. In addition, in this example, three VTRs (1
5), (16) and (17). In addition, there is a microphone (18) for guiding passengers, and a master controller (18) for in-flight management that controls each device, aggregates data from each terminal device, and creates text information to be supplied to each terminal device.
9), a keyboard (2o) that is connected to this master controller (19) and instructs various operations to be described later, and a keyboard (2o) that is connected to this master controller (19) and displays the results of construction δ with this master controller (19). and a monitor receiver (21). Equipment (11) to (2) such as
1) is connected to the system controller (10) of this central control device (1), and each controller is connected to the system controller (10) from the master controller (19) in response to an operation command from the keyboard (20). VTR(1
A control signal is supplied to VTRs 1) to (1'/), and reproduced video and audio signals are supplied from each VTR (11) to (17) in response to this control signal. In this example, when the override VTR (14) is set to the playback state by override on, the first VTR (11) is set to the playback mode and the video from the first VTR (11) is set to the playback state. Instead, the video from the override V1''R (14) is sent out. Also, an audio signal is supplied from the microphone (18).

Furthermore, character information is supplied from the master controller (19) to the system controller (10). Then, by operating the keyboard (20), the video signal supplied to the system controller (lO) mentioned above and the character information sent from the master controller (19), data transmission 1ia (27), etc. are transmitted to the monitor receiver (21). Can be confirmed.

Further, (22) indicates a printer connected to the master controller (19), and the master controller (19)
You can print out the data collected and convert it into a Bartcovey.

Moreover, seven ROM cartridges can be installed in this central control device (1), and in the case of this example, seven game ROM cartridges (23a), (23b), each storing a different video game program. ...
(23g). Then, the computer program data read from these ROM cartridges (23a) to (23g) is sent to a data transmitter (to be described later).
27).

Further, (24) indicates a floppy disk drive device connected to the master controller (19), and the data stored in the floppy disk attached to this floppy disk drive device (24) is transferred to the master controller (24).
19) to the system controller (10), and new data can be stored or stored data can be modified by operating the keyboard (20).

During this memory operation or correction operation, the monitor receiver 112 (
21) to confirm the data. In this example, this driving value! (24) Attach a floppy disk that stores menu data, etc., which will be described later.

In addition, (25) and (26) indicate audio playback machines each equipped with three compact disc players and three tape playback devices (six in total), and these sound playback machines (25) and (26) Uroko System. By supplying control signals from the controller (10), six sets of stereo audio signals (i.e., 12 channels of audio signals) are simultaneously played back from the six units, and the six sets of reproduced stereo audio signals are transmitted to the CA, which will be described later.
Supplied to the D^ encoder (28).

(27) indicates a data transmitter, and by supplying a control signal from the system controller (10),
After reading data such as video game programs from the ROM cartridges (23a) to (23g) and performing predetermined processing on the successive data, the CADA encoder (
28).

Further, (28) is a CADA encoder used in a conventionally well-known cable digital audio/data transmission system (CADA system).

The CADA system, for example, time-division multiplexes multiple digital audio signals and transmits them using the band (6MHz) of one vacant TV channel of CATν, which allows music etc. to be transmitted extremely efficiently without sacrificing sound quality. It is a system that can transmit data. In this example, the bandwidth of two television channels is used to increase the amount of transmission. The CADA encoder (28) is configured with an A/Di converter and a shift register, and converts a plurality of audio signals into digital signals with an A/D converter, and then outputs signals to predetermined positions of the shift register in parallel at high speed. It is configured to output a time-division multiplexed multiplexed signal SCA.

Figure 2 shows the format of two systems of time division multiplexed signals output from the encoder (28). This is an improvement on the proposed signal format.

That is, this multiplexed signal is a serial binary signal St consisting of a large number of superframes, as shown in FIG.
1 to F256, and one frame is composed of 168 bits as shown in FIG.
The period is 1/32kHz. And each frame is
8-bit synchronization code 5YNC, 4-bit service pin SB, and 32-bit x 4 data packet PCT
A-PCTo and 7 bits x 4 error correction bits EC
C in order.

In this case, as shown in FIG.
2 to F256 are frame sync F'S, and super frame sync SS and frame sync FS have different focus patterns.

Further, although the details of the service bit SB will be described later, one unit is 77 frames and includes data such as commands and sheet numbers.

Further, data packets PCTA-PCTO are each composed of 32 bits and constitute four packets PCT to PCTO independently of each other. Then, this packet PCTA-PCTo is divided into four channels M1 to M4 of 8 bits each, as shown in FIG.
1 to M4 are PCM signals obtained by sampling stereo left and right audio signals or monaural signals at a frequency of 32 kHz.

Therefore, there are four packets PCTA in one frame.
- Since there is a PCTO and each packet has four channels M1 to M4, a total of 16 channels of audio signals can be transmitted simultaneously in a time-sharing manner using one signal St.

In addition, each channel has a sampling frequency of 32k.
Hz and the number of quantization bits is 8 bits, so it is almost the same standard as PCM audio in 8 mm video.

In addition, ROM cartridges (22), (23a
The program data from ) to (23g) is converted into a bit-sequential time-division signal in the data transmitter (27), and this signal is directly transmitted to one of the 16 channel signals.
When the last bit is sent out, the data is sent out again from the first bit.

Note that one channel is 8 bits, and ROM cartridges (22), (23a) to (23g)
) is 8f1M, so this ROM cartridge (2
2) In channels that transmit program data from (23a) to (23g), the first to eighth bits are
Bit is ROM cartridge (22), (23a
) to (23g), and the transmission speed of each data is 32 Kbps.

Furthermore, each of the seven bits of the error correction code ECC performs error correction for each of the packets I-PCTA-PCTD.

Since the signal St has the above format, its transmission bit rate is 168 bits x 32kHz α5.4? Ibps, and 172 is the Nyquist frequency, so if there is a bandwidth for the video signal, the signal St can be transmitted.

Further, the service bit SB is used, for example, in the format shown in FIG. That is, service bit SB
There are 4 bits per frame, and these 4 bits are sequentially designated as bits 81 to B4. As schematically shown in Figure A, if the 77 consecutive frames are arranged vertically in frame units as one set, the service bit SB has a size of n bits (vertical) x 4 bits (horizontal). Become.

Therefore, as shown in FIG.
Similarly, 77 bits 82 to B4 form second to fourth channels CIINB-CHND.

Then, as shown in Figure B, channels CHN^~C
Each of HND is sequentially divided into seven words WRDA-DG of 11 bits each, as shown in FIG.
In each word, the first bit is a “0” level start bit ST)! T, the governing 8-bit data bit D T B 1', and the following 1
The bit is set as a parity bit)'RTY, and the last 1 and 2 bits are set as a stop bit of 5TOP.

Then, in each channel CHNA - CllN0, the data bit (t) TBT is 1 per word.
There are M (7 nodes), and therefore, the total data pin 1-DTBT is 7 bytes x 4 channels.

Of the data bits DTBT, the data bits DTBT of the second channel CHNB have the first byte as a header HDHR with a predetermined bit pattern (“AA” in hexadecimal value), as shown in the figure. Two bytes are used as the command CMD, which is used to identify up to 256 types of instructions. Further, the address ADl? in which the third and fourth bytes indicate the seat number (terminal device number 1+)? Status information 5TTS in which the fifth and sixth bytes indicate data or parameters accompanying the command CMD.
The last byte is taken as checksum C3.

In this case, control data from the master controller (19) is sent out in correspondence with the command CMD part in the third diagram. For example, when the override is on, the master controller (19) generates control data that puts the terminal device in a forced reception state, and sends it out in response to the command CM l). Further, the address ADR5 is arbitrarily changed by the user's keyboard operation, thereby specifying any or all of the plurality of terminal devices.

Furthermore, as mentioned above, the two systems of time-division multiplexed signals output from the encoder (28) include a ROM cartridge (
22) , pr+ from (23a) to (23g)
Since one channel is used for multiplexing gram data,
A total of 31 channels of audio signals are multiplexed.

Also, channel n+1. N+2 plays audio in response to the 1st audio channel (AUI)! (25)
, (26) are multiplexed into channel n+3. On n+4, audio playback M (25) corresponds to the second audio channel (AU2).
, (26) are multiplexed into channel n+5. On n+6, there is an audio player (25) corresponding to the third audio channel (AU3),
The stereo left and right audio signals from (26) are multiplexed, and audio signals corresponding to each audio channel are similarly multiplexed into each channel.

Furthermore, by operating the keyboard (20), television channels and audio channels that can be selected on a terminal device, which will be described later, are set. For example, it is set so that only predetermined channels of video signals and audio signals can be selected. In this case, the master controller (19) generates mode signals MODV and MOOA corresponding to the selectable television channels and audio channels as control data, and this control data is transmitted to the CADA encoder (28) as described above. and is sent out in correspondence with the command CMD part.

Also, returning to Figure 1, is it strange? The 6-channel signal related to the video signal and the encoder (29) are output from the ji adjuster (29).
A frequency multiplexed signal consisting of two channels of signals related to the output of step 8) is output, and this frequency multiplexed signal is the transmission signal SM.
F is supplied to one end of the R-key cable (R4 leakage cable) (2) constituting the bidirectional signal transmission means. A terminating resistor (2a) is installed at the other end of this leaky cable (2).
are connected and terminated.

This leaky cable (2) is, for example, a coaxial cable with a spiral cutout around it to increase the amount of signal leakage.

Also, the terminal equipment described later! (6a), (6b)
,...The signal supplied to the key cable (2) is demodulated by the modem (29) of the central control unit (1), and then sent to the ADA encoder (28) and the system controller ( The data is supplied to the master controller (19) via the data controller (10).Although not mentioned above, the master controller (19) performs processing such as aggregation of the data.

In this example, each terminal device (6a), (6b)
.

(6c) When a pay broadcast viewing application signal (described later) is supplied from..., this master controller (19
) transmits a key signal as a permission signal to the terminal device performing the reservation using the data signal in the above-mentioned format. Also, at this time, the master controller (19)
stores the viewing application status (channel, seat number, etc.) of this paid broadcast on a floppy disk drive (24
) on the floppy disk.

Description of G2 Terminal Device Next, the configuration of the terminal side will be described. The above-mentioned leaky cable (2) is stretched throughout the cabin of the aircraft, as shown in Figure 4, and each passenger seat has, for example, one
Seats for 3 people (9a) in a set of seating units (9),
(9b) and (9c) are provided, and these seat units (9) are arranged in a predetermined state inside the aircraft as described later. And this seat for three people (9a),
To explain the seat unit (9) provided with (9b) and (9c), each of these seat units (
9), antennas (4a) and (4b) for capturing transmission signals leaking from this leaky cable (2).
).

(4c) ,... are provided, and each antenna (4a
).

The signals captured by (4b), (4c), etc. are distributed to a distributor (5a).

(5b), (5c)... and these respective distributors (5a), (5b), (5c)
" = is divided into three parts, and the three divided signals are sent to each seat unit (9) at each seat (9a).

(9b), (9c) terminal device (6
a).

(6b), (6c)... In addition,
Leaky cable (2) and antenna (4a), (
4b), (4c) ..., directly connect the central control device + 1) and each terminal device (6
a), (6b), (6c), etc. may be connected.

These terminal devices (6a), (6b), (6c
)” is for each passenger seat (9a) as shown in Figure 4.
(9b).

(9c), and in FIG. 1 only the details of the 11th terminal device (6a) are shown, but the other terminal devices (6b), (6c), etc. have the same configuration.

This terminal device (6a) transmits the transmission signal distributed by the distributor (5a) to '! ``The video signal is supplied to the V tuner (61) and the CADA f-needle (62), and among the multiple channels of signals sent from the central control unit 1) to the leaky cable (2) in the TV tuner (61). A predetermined channel to be transmitted is selected and demodulated based on the channel selection information described later, and the demodulated video signal is displayed on a monitor receiver (63).
and receives the video signal.

In addition, CAII^ Chena (62) is a central control unit (
Among the multiple channels of signals sent from 1) to the leaky cable (2), the 2-channel signal carrying the multiplexed signal Sc^, which is a multiplexed signal of an audio signal and data, is demodulated, and the demodulated signal is converted to C^4. The signal is supplied to the decoder 64).

Further, when the demodulated signal includes channel selection information, this channel selection information is supplied to the TV chainer (61). This CAD^ decoder (64) is then used as a terminal device (64), which will be described later.
In response to the operation of the operation key (67) in a), the multiplexed signal Sc
The desired data (or audio signal) is extracted from ^, and the extracted data is supplied to the personal computer (65) or the terminal side controller (66). This personal computer (65) has a memory (65a).
is connected.

Then, the operation key (67) is connected to the terminal side controller (66).
), and operation commands from the operation keys (67) are supplied to the controller (66). The terminal side controller (66) also has a terminal (66a) and a terminal (66a), respectively.
Headphones (68) and a joystick (69) can be connected via the connector (66b).

Furthermore, the terminal devices (6a), (6b),
(6c)... can transmit data to the central control device (1) side. That is, the respective terminal devices (6a), (6b), (6c)
The data obtained by the personal computer (65) of ... is supplied to the CADA decoder (64), and this CAD
^Decoder (64) to one seat unit (9)
Transmitters installed one by one (7a), (7b),
(7c) ”... supplies this data to the respective transmitters (7a), (7b), (7c)
. . is connected to 10 units (8a), (8b), (8c) in which seat number data is stored, and the terminal devices (6a), (6b),
(6c) After adding this seat number data to the data supplied from ``=, it is modulated into a signal of a predetermined band, and the modulated signal is sent to the distributors (5a), (5b), (5c).
)... via the antenna (4a), (4b
), (4c)-. By doing this, antennas (4a), (4b), (4
c)...The modulated signal is transmitted to the central control unit (1) by the karari one key cable (2), and the central control unit (1)
) demodulator (29) performs demodulation.

In addition, the respective terminal bags K (6a), (6b),
(6c) Personal computer (65)
), each transmission m (7a),
(7b), (7c) . 6
5) Store this data in the memory (65a) and send it to each terminal device (6a).

At (6b), (6c), etc., the corresponding seat numbers (seat number data) are stored.

That is, the respective terminal devices (6a), (6b),
(6c) When the power is turned on, each terminal device (6a) must be turned on.

From the personal computer (65) of (6b), (6c)..., the transmitter (7a), ('/b), (7c) is transmitted via the CAD header (64).
- supplies a request signal for seat number data to for example,
When the terminal device (6a) is powered on and a request signal is supplied to the transmitter (7a), the transmitter (7a) reads out the seat number data stored in the ID unit (8a).

Also, when the power is turned on, each terminal device (6a)
, (6b), (6c)'', the CADA decoder (64) demodulates the channel assignment information as a data signal in the multiplexed signal ScA supplied from the central control unit (11) as described above and sends it to the personal computer (64).
5). When this channel/Lz assignment information is supplied to the personal computer (65), it is stored in the memory (65a). And each terminal device (6a),
(6b), (6c)", the personal computer (65) selects the video signal and selects the video signal at the TV changer (61) based on this channel allocation information.
Controls the selection of audio signals in the AD^decoder (64).

Next, an example of the configuration of the panel surface of the terminal device (6a) is shown in FIG. 5, which shows a monitor receiver (63
) are arranged on the left side, and operation keys (67) are arranged on the right side. This operation key (67) is a channel indicator (67a) and a channel up key (67b).
, channel down key (67c), game selection key (67d), TV selection key (67e), menu selection key (67f), enter key (67g), audio selection key (67h), volume Up key (
67i) and a volume down key (67j). In this case, the channel display 'a (67a) includes the upper digit display section (67az) and the lower digit display section (67a2).
Therefore, the respective display sections (67a1) and (67
a2) can display numbers or some alphabets in 7 segments.

Then, for example, after pressing the TV selection key (67e),
By pressing the channel up key (67b) or channel town key (67c), the monitor receiver (
63), the channel of the video signal to be received can be sequentially switched to a desired one. Similarly, after pressing the game selection key (67d), menu selection key (67f), or audio selection key (67h), press the channel up key (67b) or channel down key (67c).
) allows selection of a video game to be played on the monitor receiver (63), selection of a menu, or selection of an audio signal to be listened to through headphones (68).

Explanation of operation with G3 terminal device Next, each terminal device (6a), (6b),
(6c) The case where a TV channel is selected in ... will be explained.

First, channel allocation will be explained. In this example, TV channels 1, 2, and 3 can be viewed for free, and pay TV channels 4, 5, and 3 that require a fee to view.
6 is prepared, and channels /L/1 and 2.3 are respectively the first
) V'l''R (11), the second VTR (12), and the 357th) V'T'R (13).

(6b), (6c)... are also channels that can be viewed at any time. Channels 4 and 5.6 are VTR (15), V'l"R (16), and VT, respectively.
A playback signal from R (17) can be obtained and viewed only on a terminal device that has performed a predetermined operation for viewing a paid channel, which will be described later. And in this example,
Three languages (
For example, audio signals in English, 9 Japanese, and French are played back on the VTRs (12) of channels 2 and 4.

(15), audio signals of two types of languages (for example, English and Japanese) are played back, and V”rR(
13), (16), (1 type from 177)
The setting is such that an audio signal in a language (for example, English) is played.

The correspondence relationship between the video signal of the television channel set in this way and the audio signal transmitted as the multiplexed signal Sc^ is specified by the above-mentioned channel allocation information, and is transmitted to each terminal device (6a), (6b), (6c). ...
The personal computer (65) performs channel switching based on this channel assignment information. That is,
When switching channels, each terminal device (6a)
, (6b), (6c)”, then press the channel up key (67b).
) or channel down key (67c), a TV channel up command or down command is supplied from the operation key (67) to the personal computer (65) via the terminal controller (66). When this command is supplied, the personal computer (65
), the language of each television channel is sequentially changed, and then the channel is turned up or down to the next television channel. In the case of the above setting conditions, for example, when you press the channel up key (6?b), the first language of the first channel → the second language of the first channel
Language - 3rd language of the 1st channel - 1st language of the 2nd channel - 2nd language of the 2nd channel -> 1st language of the 3rd channel -> 1st language of the 1st channel -... Reception channels in this order and the language type of the voice changes.

At this time, the display on the channel display (67a) changes as shown by the solid arrow in FIG. That is, under the control of the personal computer (65), the reception channels are indicated by numbers rlJ and r2J on the upper digit display section (67ax) of the display (67a).

"3" is displayed, and the language type of the voice is "A" (indicating the first language) and rbJ (indicating the second language) by alphabet in the lower digit display section (67a2).

"C" (indicating the third language) is displayed. Note that since a 7-segment display for numbers is used, uppercase and lowercase letters are mixed.

Then, when the channel down key (6°re) is pressed, the change is reversed to that when the above-mentioned up key (67b) is pressed, as shown by the dashed arrow in FIG.

Then, the selection information of the channel selected in this way is supplied from the personal computer (65) to the 'rv tuner (61), and the tuner (61) switches the video signal channel to the designated channel. At the same time, the channel selection information is also supplied to the CADA decoder (64), and the CADA decoder (64) multiplexes the audio signal of the selected language of this channel. The extracted audio signal is extracted from the signal Sc^, and the extracted audio signal is sent to the terminal side controller (
66), and the audio is reproduced through headphones (68) connected to the terminal controller (66).

In addition, v′rR for override of the central control device (1)
When (14) is in the playback state, the multiplexed signal Sc^ sent from the CAD^encoder (28) side includes channel selection information for forcibly switching to the channel to which this override video signal is transmitted. . For this reason, C
Based on this channel selection information in the multiplexed signal extracted by the ADA decoder (64), the demodulation channel in the TV tuner (61) is forcibly switched to this override channel, and the monitor receiver (63) displays the video for this override. is forcibly perceived. Similarly, the audio is also forcibly switched to a compatible version.

In this way, each terminal device (6a), (6b)
.

(6c) Channels 1 to 3 that you can watch for free by selecting the TV channel in...
can be selected sequentially.

Next, operations for viewing pay broadcast channels will be explained.

First, when passengers in each seat wish to view pay TV channels, they use the respective terminal devices (6a) and (6b).

(6c) Press the menu selection key (67f) to display the menu screen as shown in FIG. 7A on the monitor receiver (63). This menu screen displays multiple M
Based on the menu information supplied as data in the signal ScA, the personal computer (65) creates and displays the menu information. The menu screen at this time displays a list of various in-flight services that passengers can select according to their preferences.
For example, drink (DRINK).

Meals (MEAL), purchase of duty-free items (υUTY FRE)
E), Pay TV CPAV CI), Map of destination etc. (MAP), Currency used on board (C0) l) IEN
cY) etc. are displayed.

On this menu screen, the type of service to be selected is indicated by the cursor position k, which has a different color from other parts. At this cursor position, there is a channel up key (67
b) or press the channel down key (67c) to change in order. Then, by pressing the enter key (67g) when the cursor position k is the desired service, you can select this service.For example, when the cursor position k is (PAY CH), press the enter key. Press (67g) to select a pay TV channel.

In addition, during this menu screen, the channel up key (67b) and down key (67c) are indicated by the picture display P in the corner.
) and then press the enter key (67g).

When viewing a pay broadcast channel, first select the pay broadcast column displayed as (PAY C)I) from this menu screen. When you press the enter key (67g) at the cursor position of this (PAY C) I),
As shown in Figure 7B, a list of paid broadcasts that can be viewed on board this aircraft is displayed.
vIh), Channel 5 is a music program (Music Tν
), Channel 6 is an English conversation class (ENGLISHCON)
VhRSATION) is displayed. The list at this time is the master controller (19) of the central control value W(L).
) is created and displayed by the personal computer (65) based on the menu information supplied as data in the multiplexed signal Sc. At this cursor position, there is a channel up key (67b) or a channel down key (67b).
Press 7c) to change in order.

Then, by pressing the enter key (67g) when the cursor position k becomes the desired pay TV channel,
This displayed channel is selected.

Note that a pictorial display P indicating the operating procedure is also displayed at this time.

When you press the enter key (67g) to select this pay broadcasting channel, as shown in Figure 7C, you will receive the charge for the selected pay broadcast channel, the order to view this channel, and the CAN to cancel.
CEL) is displayed. For example, when 4 channels are selected, the charges for these 4 channels are displayed. Then, this application or cancellation is selected by moving the cursor position k by operating the channel up key (67b) or down key (67c). For example, application (0)
? By selecting DBR') and pressing the enter key (67g), a subscription for this pay broadcast channel is made from the terminal device being operated to the central control device (1). For example, when this operation is performed on the terminal device (6a), viewing application information is sent from the personal computer (65) of the terminal device (6a) to the fi (7a) via the CAD header (64). A data signal having a
) seat number data is added to this data signal,
This data signal is transmitted from the transmitter (7a) to the central control unit (1).

When this data signal is transmitted to the central control unit (1), it is demodulated by the modulator/demodulator (29) and then supplied to the master controller (19).

Upon receiving this signal, the master controller (19) sends a key signal to the terminal device (6a) to permit reception of the paid broadcasting channel subscribed to using this data signal.
A specified address signal is added and sent. Further, the seat number data and viewing channel data displayed by the data signal from the terminal device (6a) are stored in the floppy disk installed in the floppy disk drive device (24).

When the key signal sent from the master controller (19) is transmitted as a multiplexed signal Sc^ by the CADA encoder (28), the terminal device (6a) specified by the address signal included in this key signal is transmitted. This key signal is then supplied to the personal computer (65) via the CAD header (64). When this key signal is supplied to the personal computer (65), it causes only this terminal device (6a) to change the channel switchable range based on the above-mentioned channel assignment information,
Enables channel switching to channel 4 indicated by the key signal.

Therefore, in this state, by pressing the TV selection key (67e) and then pressing the channel up key (67b), the first language of the first channel → the second language of the first channel → the third language of the first channel Language → 1st language of 2nd channel → 2nd language of 2nd channel → 1st language of 3rd channel → 1st language of 4th channel - 2nd language of 4th channel - 1st language of 1st channel - The receiving channel and audio language will change in this order.

At this time, the display on the channel display (67a) changes as shown by the solid line arrow in FIG. Furthermore, when the channel down key (67c) is pressed, the change is reversed as shown by the broken line arrow in FIG. The pay-TV channels that became available for viewing in this way are
For example, you will be able to watch until the aircraft arrives. Alternatively, it may be possible to view the content only for a predetermined period of time.

In this way, is this pay-TV channel available only on the terminal device that performed the selection process for this pay-TV channel? M listening becomes possible. In addition, moss terminal device (6a), (6
b) and (6c), the channel switchable range set based on the channel assignment tn report from the central control unit (11) is simply changed by the key signal, so special theft such as a disc scramble device is not possible. There is no need to provide a visual prevention mechanism, and each terminal device (6a)
, (6b), (6c)'' can be made simple, compact, and lightweight to realize paid broadcasting.

Next, to explain how to settle the viewing fee for this pay-TV channel, for example, when this airplane is about to land, the flight attendant presses the keyboard 1"(20") on the central control unit (1)
), the master controller (19) tabulates the list of paid broadcast viewing statuses stored on the floppy disk for each seat number as shown in Figure j89, and displays the results on the monitor receiver ( 21) and printed out from the printer (22). Then, the flight attendant brings this printed list of paid TV viewing status for each seat to the passengers in each seat and settles the fare in cash. Payment of the purchase amount, etc. may be performed at the same time.

In this way, according to the information transmission device of this example, each terminal device (
6a), (6b), and (6c)" can be ascertained by the master controller (19) of the central control unit!11), so the viewing fees are tallied on the master controller (19) side. You can easily collect fees, etc.

In the above-described embodiment, a case where a pay broadcast channel is provided as a television channel has been described, but a similar configuration can be applied when a pay broadcast channel is provided as an audio channel. For example, if there are 6 audio channels, channels 1 to 5 are channels that can be listened to for free, and channel 6 is a paid channel, unless the selection operation of this paid channel is performed using the menu screen described above. For example, when switching audio channels,
As shown in the display example in the figure, channel 1 → channel 2 →
It changes in the order of channel 3 -> channel 4 -> channel 5 - channel 1 - . . . or vice versa.

Then, when you select the paid channel (channel 6), the channel l-
Channel 2 -> Channel 3 -> Channel 4 -> Channel 5 - Channel 6 - Channel 1 - etc. will change in this order or vice versa, and you can listen to the audio of Channel 6, which is a paid channel. It becomes like this.

Further, in the above embodiment, each terminal device (6a).

(6b)... are attached to the back of the seat, but the armrests of the seat may also be attached to the back of the seat. In this case, only the operation keys (67) are mounted on the armrest and the monitor receiver (67) is mounted on the armrest.
3) Attach it to the back of the seat or use it as a monitor receiver @! M
(63) may be housed inside the armrest.Also, in the above-mentioned embodiment, a passenger plane was used as an example, but it can also be applied to other vehicles such as trains and buses.

Furthermore, it goes without saying that the present invention is not limited to the above-described embodiments, and can take various other configurations without departing from the gist of the present invention.

H Effects of the Invention According to the information transmission device of the present invention, there is an advantage that pay broadcasting services can be realized with a simple, compact, and lightweight configuration without the need to provide a special eavesdropping prevention device such as a descrambler device on each terminal device side. There is. Furthermore, since the pay broadcasting service is controlled on the central control device side, the central control device can aggregate viewing fees, which has the advantage of not requiring time and effort to collect fees.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an embodiment of the information transmission device of the present invention, FIGS. 2 and 3 are diagrams each showing an example of a signal format, and FIG. 4 is a perspective view showing the arrangement of the embodiment. , 5th
The figure is a front view showing a terminal device of one embodiment, and FIGS. 6 to 11.
Each figure is a diagram for explaining one embodiment. (1) is the central control unit, (2) is the leaky cable, (
4a), (4b), (4c) are antennas,
(5a). (5b), (5c) are distributors, (6a),
(6b), <6c). ... is a terminal device, (7a), (7b),
(7c) is a transmitter, (8a), (8b),
(8c) is the ID unit, (10) is the system controller, (11) is the first V'l''R, <12) is the second
(7) VTR, (13) a third VTR, (14) an override VTR, (15). (16) and (17)・ are VTRs for pay television, (
18) is the microphone, (19) is the master controller, (
20) is a keyboard, (21) is a monitor receiver, (22)
) is the printer, (23a) to (23g) are the RO
M cartridge, (24) is a flowbee disk drive device, (25) and (26) are audio playback devices, (28)
is a coder to CAD 8e, (29) is a transformer, (61
) is a TV tuner, (62) is a CAD∆ tuner,
(63) is a monitor receiver, (64) is a CADA decoder, (65) is a personal computer, (65a) is a memory, (66) is a terminal (controller), (67) is an operating key, (69) is a It's a joystick. 6761 67a2 1000000000 Shaki timer) Wasunei) Fig. 6 + Zennel Dointoki Mudeima 1) Fig. 8 Hanawa;

Claims (1)

[Scope of Claims] 1. In an information transmission device that transmits information from a central control device provided in a vehicle having a plurality of seats to a plurality of terminal devices provided in each of the plurality of seats, the central control device The device includes means for sending a plurality of programs,
A means for transmitting a pay broadcast program different from the plurality of programs, a storage means for a menu including items of the pay broadcast, and a key signal that enables the plurality of terminal devices to receive the pay broadcast and display its channel. a control means for transmitting the plurality of programs, the pay television program, and the key signal to the plurality of terminal devices; video display means for displaying the broadcast program and the menu; menu selection means for selecting a desired item from the menu; channel display means for displaying the channels of the plurality of programs and the pay broadcast program; and the plurality of programs. and channel selection means for selecting a desired program from the pay broadcasting programs, and terminal-side transmission means for transmitting a selection signal to the central control device in accordance with the selection by the menu selection means, When the pay broadcasting item is selected by the menu selection means in any of the terminal devices, transmitting the key signal from the central control device to the corresponding terminal device;
An information transmission device characterized in that the corresponding terminal device can receive the pay broadcast program and display the channel. 2. The scope of claims characterized in that the central control device is provided with a charge calculation means, and under the control of the charge calculation means, the terminal device that selects the paid broadcasting item with the menu selection means is charged. The information transmission device according to item 1.