Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Electrical signal parameter measurement system
Reexamination Certificate
2000-07-10
2002-10-01
Bui, Bryan (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Electrical signal parameter measurement system
C702S067000, C345S156000, C345S157000
Reexamination Certificate
active
06460000
ABSTRACT:
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is based upon and claims the benefit of priority from the prior Japanese Patent Application No. 11-197658, filed Jul. 12, 1999, the entire contents of which are incorporated herein by reference.
BACKGROUND OF THE INVENTION
The present invention relates to a measurement data display apparatus, and in particular, to a measurement data display apparatus which is applicable to an optical pulse tester for carrying out various measurements such as a loss and fault point of a measured optical fiber by making an optical pulse incident upon a measured optical fiber from a light source, and by photo-electrically converting a reflection light (back scattering light, Fresnel reflection light) returning back from the measured optical fiber in accompanying with the incidence of the optical pulse, into a signal so as to display its signal waveform, that is, to various data measuring apparatuses such as an optical time domain reflectometer (hereinafter, referred to as OTDR).
An OTDR has been already known as an apparatus which carries out various measurements such as a loss and fault point of a measured optical fiber by making an optical pulse incident upon a measured optical fiber from a light source, and by photo-electrically converting a reflection light returning back from the measured optical fiber in accompanying with the incidence of the optical pulse, into a signal so as to display its signal waveform.
FIG. 5
is a block diagram schematically showing a construction of this type of OTDR.
As shown in
FIG. 5
, an OTDR
31
comprises a timing generating section
32
, a light emitting section (light source)
33
, a photo-coupler
34
, a light receiving section
35
, an amplifier section
36
, an A/D converter section
37
, an adder circuit section
38
, a calculation (operation) control section
39
, and a display section
40
.
In the OTDR
31
, an optical pulse is emitted from the light emitting section
33
driven by a signal from the timing generating section
32
, and then, the optical pulse is incident upon a measured optical fiber W via the photo-coupler
34
.
Then, in accompanying with the incidence of the optical pulse, a reflection light reflected and returning back from the measured optical fiber W is again received by the light receiving section
35
via the photo-coupler
34
, and then, is amplified by the amplifier section
36
at a predetermined amplification factor, and thus, is guided to the A/D converter section
37
.
The A/D converter section
37
samples an output from the amplifier section
36
at a predetermined sampling period, and thereafter, supplies each data thus sampled to the adder circuit section
38
.
The adder circuit section
38
makes an addition of the sampled each data for a predetermined time, and then, averages each data.
The averaged each data is supplied to the calculation control section
39
.
The calculation control section
39
carries out a calculation relative to various measurements on the basis of the averaged each data, and thus, the result is displayed as a waveform data and a numeric data on the display section
40
.
By the way, FIG.
6
and
FIG. 7
individually show a display screen when selecting various items of a measuring apparatus such as the above OTDR disclosed in U.S. Pat. No. 5,801,953.
In such an apparatus, when a selection key provided in an apparatus main body is pushed, a window
51
as shown in
FIG. 6
pops up, and then, is displayed on a screen.
By operating a pointing device (arrow keys)
52
and a select key
53
provided on a display area apart from the window
51
, when one of sub-menus
54
in the pop-up and displayed window
51
is selected, a window display is transferred from the window
51
to a lower hierarchy window
55
as shown in FIG.
7
.
However, in the aforesaid conventional measuring apparatus, in the case where the window
55
as shown in
FIG. 7
is displayed, it is impossible to confirm the contents (item contents of sub-menu
54
) of the window
51
shown in
FIG. 6
in the window
55
.
For this reason, when opening the window shown in
FIG. 7
in error, in order to return the window display back to the window
51
shown in
FIG. 6
, the following operation is inevitably required; more specifically, in a state that the window
55
shown in
FIG. 7
is displayed, the pointing device
52
is operated so as to position a cursor
56
onto “CANCEL”, and thereafter, the select key
53
must be pushed down. Therefore, the number of key operations increases by the aforesaid operations; as a result, there is a problem of lacking in an operability.
By the way, in recent years, the apparatus main body of the OTDR is miniaturized so as to be readily carried as a portable equipment.
In addition, in such an OTDR, a characteristic measurement such as a loss and fault point of a measured optical fiber is carried out as a basic measurement at a desired spot of fiber, and besides, an item for processing a data obtained by the basic measurement is arbitrarily selected, and then, various settings are carried out.
However, the setting by items other than the above basic measurement is different from the setting of the basic measurement, and is utilized as the necessity arises. For this reason, taking an operability into consideration, it is desired to select various items allocated apart from measuring items of the basic measurement.
BRIEF SUMMARY OF THE INVENTION
Therefore, an object of the present invention is to provide a measurement data display apparatus which can visibly recognize a menu capable of being selected at the identical hierarchy on one screen, and can reduce the number of hierarchies on a screen and the number of key operations so as to improve an operability.
In order to achieve the above object, according to one aspect of the present invention, there is provided a measurement data display apparatus which displays a measurement data of a measured object on a screen, comprising:
an input section provided on the front side of the measurement data display apparatus, and including at least a first key, a second key and a plurality of function keys;
a display section provided on the front side of the measurement data display apparatus, and displaying a main screen displaying a measurement data of the measured object on the screen; and
a control section making a pop-up display of a secondary screen which has a plurality of large item menus for processing a measurement data of the measured object and a plurality of small item menus corresponding to each of the plurality of large item menus, on the main screen of the display section by operating the first key of the input section, displaying each of the plurality of small item menus on a position corresponding to each of the plurality of function keys of the input section, and selecting the plurality of large item menus is selectable by operating the second key of the input section.
Additional objects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objects and advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out hereinafter.
REFERENCES:
patent: 5504502 (1996-04-01), Arita et al.
patent: 5515301 (1996-05-01), Corby, Jr. et al.
patent: 5592606 (1997-01-01), Myers
patent: 5801953 (1998-09-01), Thoma et al.
patent: 5943123 (1999-08-01), Oshimi et al.
Generic Requirements GR-196-Core Issue 1, Sep. 1995, (Generic Requirements for Optical Time Domain Reflectometer (OTDR) Type Equipment, Bellcore (Bell Communications Research)), pp. B-1 to B-12.
Hori Shigeo
Nakayama Norio
Oshimi Takashi
Tamakoshi Masaaki
Anritsu Corporation
Bui Bryan
Frishauf Holtz Goodman & Chick P.C.
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