Computer graphics processing and selective visual display system – Display peripheral interface input device – Stylus
Reexamination Certificate
1998-06-01
2002-04-09
Jankus, Almis R. (Department: 2671)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Stylus
Reexamination Certificate
active
06369807
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to an online character entry device in which hand-written character is inputted by online processing in use for an electronic notebook or a pen-computer.
DESCRIPTION OF THE PRIOR ART
In the conventional online character entry device, which causes hand-written character to be inputted due to online processing by using a pen, if it is capable of performing an abbreviation entry, the user of the online character entry device can implement entry of the character efficiently. The abbreviation entry is that the user does not input whole image of the character string, the commands, or the graphics which are in use repeatedly, but inputs prescribed simple image corresponding thereto. Further, if the user can implement elimination of stroke and so forth which are inputted erroneously, by simple operation, the operation is more efficient. Incidentally, the stroke denotes a figured line from pen-down to pen-up.
One example in which the abbreviation entry is capable of being realized is described in the Japanese Patent Application Laid-Open No. HEI 06-332610 (hereinafter referring to a first conventional example). Another example in which the elimination method for stroke and so forth is described in the Japanese Patent Application Laid-Open No. HEI 06-19615 (hereinafter referring to a second conventional example).
In the first conventional example, the user inputs beforehand a stroke (hereinafter referring to identification stroke) with prescribed specific configuration which means that it is abbreviation entry, in addition to recognizable character pattern such as alphabets simultaneously. When a recognition result concerning the recognizable character pattern is obtained, the character string or commands or the like which are registered beforehand corresponding to character code of the recognition result are outputted.
FIG. 1
is a block diagram showing a first conventional example. Referring to
FIG. 1
, the first conventional example includes a character entry unit
7
, a data processor
8
which operates depend upon a program control, a storing unit
9
for storing information, and an output unit consisting of a display means and a printer.
The character entry unit
7
which consists of a tablet and so forth cause a stroke pattern which is a row of coordinate points sampled with fixed time interval concerning respective strokes of characters inputted to be stored into the storing unit
9
. The storing unit
9
consists of a stroke storing section
901
and a relevance word correspondence storing section
902
. The stroke storing section
901
stores a stroke pattern transferred from the character entry unit
7
. The relevance word correspondence storing section
902
causes a pair of character string or commands or the like (hereinafter referring to relevance word) which becomes object of abbreviation entry and a character code corresponding thereto to be stored.
The data processing unit
8
consists of an identification stroke detecting section
801
, an identification stroke eliminating section
802
, a character recognizing section
803
, and a relevance word retrieval section
804
. The identification stroke detecting section
801
examines whether or not the identification stroke exists in the stroke pattern group stored in the stroke storing section
901
, thus transferring the signal representing the result thereof (hereinafter referring to detection signal) both to the identification stroke eliminating section
802
and the relevance word retrieval section
804
. The identification stroke eliminating section
802
determines whether or not it causes the stroke pattern to be eliminated based upon value of the detection signal transferred from the identification stroke detecting section
801
, thus eliminating it if necessary. The character recognizing section
803
implements character recognition concerning the stroke pattern group transmitted from the identification stroke eliminating section
802
. The relevance word retrieval section
804
, when the detection signal from the identification stroke detecting section
801
is ON, separates relevance word corresponding to the character code of the character recognizing section
803
from the relevance word correspondence storing section
902
.
Next, operation thereof is described by using
FIGS. 1
,
2
, and
3
.
FIG. 2
is a flow chart showing operation of the first conventional example.
FIG. 3
is a view showing an entry example of the first conventional example. The stroke storing section
901
stores a stroke pattern group for one character which is transferred from the character entry unit
7
(STEP C
1
). The identification stroke detecting section
801
detects an identification stroke among the stroke pattern group stored in the stroke storing section
901
(STEP C
2
), before transmitting the detection signal both to the identification stroke eliminating section
802
and the relevance word retrieval section
804
. By way of the identification stroke, for example, as a stroke S
14
shown in
FIG. 3
, the stroke whose shape is ◯ (a circle), and which is written down so as to envelope remaining stroke group is used. When the identification stroke is detected, the detection signal becomes ON (STEP C
3
). When the identification stroke is not detected, the detection signal becomes OFF (STEP C
5
). The identification stroke eliminating section
802
inputs therein the stroke pattern group stored in the stroke storing section
901
and the detection signal from the identification stroke detecting section
801
. Further, the identification stroke eliminating section
802
, when the detection signal is ON, eliminates the stroke pattern corresponding to the identification stroke from the stroke pattern group, thus transferring remaining stroke pattern to the character recognizing section
803
(STEP C
4
). Furthermore, the identification stroke eliminating section
802
, when the detection signal is OFF, transfers the stroke pattern group to the character recognizing section
803
as it is. In the case of
FIG. 3
, the stroke patterns corresponding both to the strokes S
11
, S
12
, and S
13
are transferred to the character recognizing section
803
. The character recognizing section
803
implements character recognition concerning the stroke pattern group transferred from the identification stroke eliminating section
802
, thus transferring character code of the recognition result to relevance word retrieval section
804
(STEP C
6
). The relevance word retrieval section
804
receives the detection signal transferred from the identification stroke detecting section
801
and the character code from the character recognizing section
803
, when the detection signal is ON, separating from the relevance word correspondence storing section to transfer the relevance word corresponding to the received character code to the output unit
4
(STEPs C
8
, C
9
). While when there is no relevance word corresponding thereto, or the detection signal is OFF, thus transferring the character code of the recognition result to the output unit
4
(STEP C
10
).
In the second conventional example, the user can eliminate the stroke which is inputted erroneously in such a way that it causes figured line (hereinafter referring to as identification partial stroke) with prescribed shape written continuously as it stands pen-down to be inputted therein.
FIG. 4
is a block diagram showing a second conventional example. Referring to
FIG. 4
, the device of the second conventional example includes a character entry unit
7
, a data processing unit
11
which operates due to program control, a storing unit
12
for storing information, and an output unit
10
consisting of a display means and printer and so forth.
The character entry unit
7
is the same as that of the first conventional example, therefore description thereof is omitted. The storing unit
12
comprises a stroke storing section
1201
. The stroke storing section
1201
stores the stroke pattern transferred from the stroke
Jankus Almis R.
NEC Corporation
Ostrolenk Faber Gerb & Soffen, LLP
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