JPH11298556A - Interface with level adjustment function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the interface by which a level is automatically adjusted by having only to enter level information of each device or the like and the level adjustment job is much simplified. SOLUTION: This interface 3A can be interfaced with any of plural various devices in a prescribed system by adjusting a signal level or its impedance of the interface. The interface 3A is provided with an adjustment level entry section 32 to enter a signal level or impedance information to the interface and an electronic volume 311 that adjusts the signal level or the impedance based on the signal level or impedance information entered by the entry section 32.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention connects a signal processing unit such as an ICS (Internal Communication System) or a communicator mounted on an airplane to each wireless device brought into the airplane. In particular, the present invention relates to an interface for easily adjusting an interface.

[0002]

2. Description of the Related Art FIG. 2 is a block diagram showing a mode of use of a conventional interface mounted on an aircraft. In FIG. 2, reference numeral 1 denotes a signal processing unit installed in an aircraft. The signal processing unit 1 includes, for example, a communication device 1.
A and an audio processor (ICS) 1B. Reference numeral 3 denotes an interface for connecting an aircraft-mounted device to the signal processing unit 1, and reference numeral 4 denotes, for example, a wireless device brought into the aircraft. The radio 4 includes an HF radio, a UHF radio, and a VHF radio.

[0003] Each of these radios brought into the aircraft has a different interface standard (50, 75,
A 100Ω, etc.), each of the signal level (e.g., V _{P- P} type or with rms type, etc.) are different, a different by the signal level aircraft of the signal processing unit 1 mounted on the aircraft . Therefore, if you bring each radio to a variety of different aircraft,
The interface level is adjusted to match the signal level of each aircraft.

[0004]

However, such adjustment is performed by the operator manually checking the signal level of each brought-in device with respect to the signal level of the signal processing unit mounted on each aircraft body by a list. Since the level adjustment volume 5 and the like are rotated, if the number of devices brought into the aircraft increases or the frequency of replacement is increased, the work and management become complicated, and a large amount of time is required. There is.

Accordingly, an object of the present invention is to solve the conventional problem that the level adjustment at the interface becomes complicated for such equipment brought into the aircraft,
An object of the present invention is to provide an interface that can easily perform the level adjustment.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is to adjust a signal level or an impedance so that any one of a plurality of various devices can be connected to a predetermined system. An interface capable of inputting the signal level or impedance information to the interface, and level adjusting means for adjusting the signal level or impedance based on the signal level or impedance information input by the input means. It is a thing.

In an embodiment of the present invention, an interface 3 for connecting a radio 4 to a signal processing unit 1 such as a communication device 1A or a voice processor 1B mounted on an aircraft.
A, reading means (MC driver 323, MPU 3) of the memory card 6 storing the signal level of the radio 4
22) Alternatively, an information input means by the keyboard 7 is provided, and an electronic volume 311 for adjusting the level based on the signal level input by the input means is provided.

According to such a configuration, the level adjustment operation, which has been conventionally performed manually, can be automatically performed only by inputting the level information of each device, and the operation is extremely simple. Becomes

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention. In the figure, reference numeral 1 denotes a signal processing unit mounted on the body, 1A denotes a communication device, and 1B denotes an audio processor. Reference numeral 3A denotes an interface. The interface 3A includes an interface unit 31 for interfacing signals and an adjustment level input unit 32 for inputting an adjustment level.

The adjustment level input section 32 has a memory card (MC) 6 inserted therein, an MC driver 323 for reading information from the memory card 6, and a control section (MPU) for reading input information from the MC driver 323. 32
2 and EEPROM for storing information of the control unit 322.
It has a level storage unit 321 composed of M or the like.

The interface unit 31 includes a control unit 322
And an electronic volume 311 for adjusting the level of the interface to this adjustment level. This electronic volume is a well-known volume that can be digitally controlled.
It is known to switch and change a resistance (implemented by a semiconductor IC or the like) in which an attenuator of B, 2 dB... 10 dB enters.

In FIG. 1, reference numeral 4 denotes a radio device which is a model mounted on an aircraft. The radio 4 includes an HF radio, a UHF radio, and a VHF radio. In the figure, reference numeral 7 denotes a keyboard for inputting information.

The operation of the embodiment will be described below. In this embodiment, a device number is provided for each device (the interface 3A mounted on the device), and
Is stored in the MC 6 in association with the machine number. The MPU 322 reads information from the MC 6 via the MC driver 323, searches for level information corresponding to the machine number, controls the electronic volume (level adjustment unit) 322 with the data, and controls the level of the external input / output signal. Adjust automatically.

At this time, the level information input from the MC 6 is stored in the level storage unit 321 which is a nonvolatile EEPROM. If the level information is stored in the level storage unit 321 in this manner, the power is turned off.
If it is performed, or if the MC 6 is not mounted, the level adjustment can be performed using the information stored before.

In the above embodiment, the level information is input to the interface using the memory card. However, the level information may be input directly using the keyboard 7. Further, the level information of each device corresponding to the machine may be stored together with each device number on the interface side, and the device number of the device brought into and connected to the machine may be input from the keyboard 7. .

[0016]

As described above, according to the present invention, there is provided an interface capable of connecting any of a plurality of various devices to a predetermined system by adjusting a signal level or impedance. An input means for inputting the signal level or impedance information to the interface; and a level adjusting means for adjusting the signal level or impedance according to the signal level or impedance information input by the input means. Adjustment work can be performed automatically just by inputting the level information etc. of each device.When each device is brought into another aircraft body and connected to its interface, management by level adjustment for each aircraft Can be solved, and the complexity of manufacturing books can be reduced. Concrete Library is advantageously possible to reduce the (printed circuit board assembly drawing, mounting diagrams, parts list, adjustment method, test procedures, performance, documents required to produce such plans).

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a conventional interface used in an aircraft.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 signal processing unit 1A communication device 1B sound processor 3A interface 4 wireless device 6 memory card 7 keyboard 31 interface unit 32 adjustment level input unit 321 level storage unit 322 control unit (MPU) 323 MC driver

Claims (1)

[Claims] 1. An interface capable of connecting any of a plurality of various devices to a predetermined system by adjusting a signal level or impedance, wherein the signal level or impedance information is input to the interface. An input means for adjusting the signal level or impedance based on the signal level or impedance information input by the input means.