CN1164456C

CN1164456C - Infrared wireless control device of airplane cabin entertainment system

Info

Publication number: CN1164456C
Application number: CNB011003693A
Authority: CN
Inventors: 岑裕洲; 吴正南
Original assignee: Industrial Technology Research Institute ITRI
Current assignee: Industrial Technology Research Institute ITRI
Priority date: 2001-01-03
Filing date: 2001-01-03
Publication date: 2004-09-01
Anticipated expiration: 2021-01-03
Also published as: CN1362349A

Abstract

The invention relates to an infrared wireless control device of an airplane cabin entertainment system, which comprises a head end device capable of providing audio-visual information service, a plurality of distributors and a plurality of seat end devices, wherein the distributors are connected to the head end device through a trunk connecting line, each distributor corresponds to the plurality of seat end devices, and the distributors and the corresponding plurality of seat end devices form a wireless connecting line through infrared rays so as to be convenient for communication in a wireless multiple access mode, simplify the configuration of the system and provide a reliable, real-time and easily maintained data access structure.

Description

The infrared and radio controller of recreation system in passenger cabin of airplane

Technical field

The present invention is the technical field of relevant recreation system in passenger cabin of airplane, refers to a kind of infrared and radio controller of recreation system in passenger cabin of airplane especially.

Background technology

Press, for the environment of the comfortable happiness of passenger can be provided during flight, general passenger plane is provided with so-called main cabin entertainment systems (Inflight Entertainment System), so that multi-form entertainment of passenger and service to be provided, and being provided with at the main cabin entertainment systems, be arranged on the passenger seat seat end (Seatend) device and must be connected to a distributing box (Distribution unit), so that with head end (Headend) the computer apparatus line of main cabin entertainment systems, require or reception information and reach the purpose that service and program are provided so that can transmit.

And be to avoid the influence of airwave communication for the flight electronic machine, usually be connected in wired mode between seat end and distributing box, therefore, not only distribution is complicated and be unfavorable for the arrangement and the adjustment of the seat of passenger cabin, for example, after in case the distribution between seat end and the distributing box is finished, airline company is as will adjusting the branch timing of main cabin classification in response to actual passenger's demand, the seat position of different main cabins classification promptly must be adjusted, at this moment, original distribution also must reconfigure, so will cause the cost of plenty of time and money, therefore, aforementioned known main cabin entertainment systems gives improved necessity in fact.

Summary of the invention

The objective of the invention is is providing a kind of infrared and radio controller of recreation system in passenger cabin of airplane, make it between seat end device on the passenger seat and distributing box with radio multiplex access mode line, so that the configuration of simplified system, and provide reliable, instant and safeguard easy data access framework.

For reaching aforesaid purpose, the infrared and radio controller of a kind of recreation system in passenger cabin of airplane proposed by the invention comprises the head end device, and it can provide the audio and video information service; A plurality of distributing boxs are to be connected to this head end device through a trunk line; A plurality of seat end devices, each distributing box are corresponding a plurality of seat end devices, and distributing box and seat end device are equipped with optical head respectively, and are to see through optical head to receive and dispatch infrared ray and constitute radio connecting between this distributing box and pairing a plurality of seat end device; It is characterized in that,

This distributing box comprises:

Control unit is the sending and receiving in order to control information;

One exhibition frequency word modulator is that the information of sending and receiving is opened up modulation frequently;

One quadrature phase shift keying modulation tech modulator is to be optical signal with the signal transition behind this exhibition frequency word modulator modulation, so that sent with infrared ray by optical head; And

Last quadrature phase shift keying modulation tech demodulator is to be demodulated into radiofrequency signal by the infrared signal that optical head received.

Wherein this distributing box and seat end device respectively have optical head and receive and dispatch infrared light-wave.

Wherein this seat end device also has a receptor receiving the infrared signal from this optical head, and produces cooresponding electric signal and export a detecting and an eqalizing cricuit to, and the signal that is received with detecting is also compensated distortion.

Wherein this control unit has a controller and a RS485 interface, and this controller is to receive and send messages in the RS485 interface that sees through standard.

Wherein these distributing boxs are arranged on the top of aircraft passenger compartment.

Wherein the pairing a plurality of seat end devices of each distributing box are arranged on the seat in the infrared ray institute covering scope of this distributing box.

Because the present invention constructs novelty, can provide on the industry and utilize, and truly have the enhancement effect, so apply for a patent in accordance with the law.

Description of drawings

For making your juror can further understand structure of the present invention, feature and purpose thereof, the attached now detailed description with graphic and preferred embodiment as after, wherein:

Fig. 1 is the recreation system in passenger cabin of airplane Organization Chart that shows according to infrared and radio controller of the present invention disposed.

Fig. 2 shows according to the actual disposition of infrared and radio controller of the present invention at aircraft passenger compartment.

Fig. 3 is that summary shows the communication connection according to distributing box of the present invention and seat end device.

Fig. 4 is the circuit block diagram that shows according to distributing box of the present invention.

The specific embodiment

At first see also shown in Figure 1, Fig. 1 shows the recreation system in passenger cabin of airplane Organization Chart according to infrared and radio controller of the present invention disposed, it comprises a head end device 11, a plurality of distributing boxs 12 and a plurality of seat end device 13, wherein, this head end device 11 can be a computer system that various audio and video informations can be provided, these a plurality of distributing boxs 12 are to be connected to this head end device 11 through a trunk line, each distributing box 12 is a plurality of seat end devices 13 of correspondence then, and distributing

box

12 and 13 of pairing a plurality of seat end devices are to see through infrared ray and constitute radio connecting.

Fig. 2 shows with the actual disposition of aforementioned infrared and radio controller at aircraft passenger compartment, it shows that these distributing boxs 12 can be arranged on the top in main cabin, one distributing box, 12 pairing a plurality of seat end devices 13 then are arranged on the seat in the infrared ray institute covering scope of this distributing box 12, by this, each seat end device 13 can see through pairing distributing box 12 and with head end device 11 lines.

Fig. 3 further shows the communication connection scheme drawing of aforesaid distributing box 12 and seat end device 13, wherein, distributing box 12 and seat end device 13 respectively have

optical head

34 and 31 and receive and dispatch infrared light-wave, this seat end device 13 has a receptor 32 to receive the infrared signal from this optical head 31, and produce cooresponding electric signal and export to one the detecting and eqalizing cricuit 33, compensated with the signal that received of detecting and to distortion, so that for follow-up processing.

Fig. 4 shows the circuit block diagram of this distributing box 12, it comprises a control unit 41, one exhibition frequency word modulator 42, one quadrature phase shift keying modulation tech (Quadrature Phase ShiftKeying QPSK) modulator 43, an and quadrature phase shift keying modulation tech (QuadraturePhase Shift Keying QPSK) demodulator 44, wherein, this control unit 41 has a controller 411 and a RS485 interface 412, the RS485 interface that this controller 411 sees through standard receives the information from head end device 11, this information is used for example mutual-complementing code key (Complementary Code Keying via this exhibition frequency word modulator 42, CCK) technology is opened up modulation frequently, signal behind the modulation inputs to this quadrature phase shift keying modulation tech (Quadrature Phase Shift Keying QPSK) modulator 43 again, to carry out the modulation of Q passage 431 and I passage 432 respectively, and change optical signal into by mixer 433 smears, so that send with infrared ray by optical head.Otherwise, by the infrared signal that optical head received is at first to be demodulated into radiofrequency signal by this quadrature phase shift keying modulation tech (Quadrature Phase Shift KeyingQPSK) demodulator 44, and master controller 411 exports head end device 11 to through the RS485 interface after these exhibition frequency word modulator 42 conversions again.

By above explanation as can be known, the present invention carries out the data of 12 of seat end device 13 and distributing boxs and the transmission and the reception of control signal with infrared ray in recreation system in passenger cabin of airplane, and 12 of a plurality of seat end devices 13 and pairing distributing boxs can carry out multiple access, and to adopt the CCK technology to increase data rate, in addition the communications protocol of 12 of seat end device 13 and distributing boxs can use approval (Acknowledge) information avoid multiple access the collision (Collision) that may cause.Therefore, compared to known recreation system in passenger cabin of airplane, the present invention really has following advantage:

1. replace the distribution of cable by wireless connection, can significantly simplify the configuration of entity.

2. the location independent of data access and seat end device, is installed and is reconfigured the distribution of the position that can provide convenience, easier on-the-spot debug, maintenance.

3. easier immediate access is provided.

4. reduce the expense of design, installation and maintenance and maintenance.

5. the fiduciary level of elevator system.

Only it should be noted that above-mentioned many embodiment give an example for convenience of explanation, the interest field that the present invention advocated should be as the criterion so that claim is described certainly, but not only limits to above-mentioned

Embodiment.

Claims

1. An infrared wireless control device for an aircraft cabin entertainment system, including a head-end device that can provide audio-visual information services; a plurality of distributors connected to the head-end device through a trunk connection; a plurality of seats Each distributor corresponds to a plurality of seat-end devices. The distributor and the seat-end devices are respectively equipped with optical heads, and the distributor and the corresponding multiple seat-end devices are connected through the optical head. Send and receive infrared rays to form a wireless connection; it is characterized in that,

This allocator includes:

The control unit is used to control the sending and receiving of information;

A spread-frequency digital modulator, which performs spread-frequency modulation on the received information;

A quadrature phase shift keying modulation technology modulator, which converts the signal modulated by the spread spectrum digital modulator into an optical signal, so that the optical head can send it out with infrared rays; and

The upper quadrature phase shift keying modulation technology demodulator demodulates the infrared signal received by the optical head into a radio frequency signal.

2. The infrared wireless control device of the aircraft cabin entertainment system according to claim 1, wherein the seat end device also has a receiver to receive the infrared signal from the optical head and generate a corresponding electrical signal And output to a detection and equalizer to detect the received signal and compensate for the distortion.

3. The infrared wireless control device of the aircraft cabin entertainment system according to claim 1, wherein the control unit has a controller and an RS485 interface, and the controller sends and receives information through a standard RS485 interface.

4. The infrared wireless control device of the aircraft cabin entertainment system according to claim 1, wherein the distributors are arranged on the top of the aircraft cabin.

5. The infrared wireless control device of the aircraft cabin entertainment system according to claim 4, wherein the plurality of seat end devices corresponding to each distributor are set within the range covered by the infrared rays of the distributor on the seat.