CN1027320C - Pen type scanning unit directly wired to printer port of computer - Google Patents

Abstract

The present invention relates to a printing method for saving ink, which comprises a pen type outer casing, wherein a scanning and positioning auxiliary device is arranged in front of the pen type outer casing; an observation window is arranged on the scanning positioning auxiliary device; the width of the observation window subjects to the height of a column of character images. Only by the need of configuring a light source detection device with a short pixel and matching an encoder for detecting horizontal displacement, character image codes are transferred to printer port of a computer host by a control conversion circuit, auxiliary software on the computer can receive the character images, and the purpose of direct extraction and direct input can be reached by multiple processing.

Description

Pen type scanning unit directly wired to printer port of computer

The present invention relates to scanister, particularly a kind of pen-type scanner that can directly be connected computer printer port, can also directly scan the input computer as the paragraph of choosing article the pen.

Scanister in the past is platform-type scanner and hand held scanner, and it can scan general flat file, scanning for face type image, really can bring into play its function,, extremely many restrictions be arranged then still for the picked at random or the input of a delegation or a literal image.

At first, image scanner in the past is to be scan unit with the face, for scanning with the literal image of behavior unit, must determine the paragraph of desire scanning in advance in advance, and parameter is being assigned line scanning again, or whole scanning earlier, the paragraph of wanting in choose afterwards again, not only can't be instant choose desired sentence paragraph according to needs, and because the input and the processing of unnecessary image, will waste more time, more storer and processing speed.

Secondly, characteristic such as image scanner in the past is to be scan unit with the face, causes its volume bigger, and weight is heavier, and consumption is more has also influenced its convenience of carrying.

In addition, image scanner in the past can't scan the curved surface information as thick and heavy book, and the scanning plane of wide length also must use the detecting unit of more pixel and accurate optical system.

Fundamental purpose of the present invention be provide a kind of directly with the pen-type scanner of computer printer port line, its can be directly for the part of desire input, to be listed as or to be that unit scans, can exempt the trouble of user's secondary editing operating.

Secondary objective of the present invention be provide a kind of directly and the pen-type scanner of computer printer port line, it can exempt the transmission and the processing of unnecessary information, the transmission of acceleration information and the speed of processing, and must not add interface card, be connected with computer and directly see through the printer port.

Another object of the present invention be provide a kind of directly with the pen-type scanner of computer printer port line, because of the face of its needed detection signal is little, so use the CCD(electric charge of short pixel to be coupled) device and better simply lens can reach.

A further object of the present invention be provide a kind of directly with the pen-type scanner of computer printer port line, its volume is little, and is light and handy, very power saving, being fit to use battery is its power supply.

For reaching above-mentioned purpose, of the present invention directly and the pen-type scanner of computer printer port line, its principal character is: it includes the shell of a pen type, there is the one scan positioning auxiliary device in its place ahead, the scanning positioning auxiliary device is provided with an observation window, its width is as the criterion with the image information that receives row, so can be used the light source detection device of a short pixel, the sentence paragraph that is all actual needs because of input, so quantity of information is little, and be combined with the scrambler of a detection level displacement, an and control transformation circuit, with signal of video signal via the printer port, the input host computer, cooperate assistant software again, do various processing according to need, reach the purpose that the sentence paragraph can scan immediately and directly edit.

Below by most preferred embodiment and accompanying drawing pen-type scanner direct and computer printer port line of the present invention is elaborated, in the accompanying drawing:

Fig. 1 be of the present invention directly and the connection diagram of the pen-type scanner of computer printer port line.

Fig. 2 be of the present invention directly and the exploded view of the pen-type scanner of computer printer port line.

Fig. 3 be of the present invention directly and the circuit block diagram of the pen-type scanner of computer printer port line.

Consult Fig. 1, this illustrate of the present invention directly and the connection diagram of the pen-type scanner of computer printer port line, scanner device 2 mainly is to classify scan unit as, paragraph to file scans, suppose that the direction of scanning of image scanner was from top to bottom in the past, its sweep trace is then for from left to right, of the present invention directly and the direction of scanning of the pen-type scanner of computer printer port line for from left to right or from right to left, for from top to bottom or from bottom to top, this is a big-difference therebetween as for scan-line direction; Scanner device 2 is projected to the light source on the paper, reflect through paper, enter by the observation window on the shell front end, through lens focus, be radiated on the CCD device, signal of video signal is converted to voltage signal, after scanner device 2 is done the processing of similar general scanner, then signal is delivered to printer connector 4, send into host computer 6 again, after retouching apparatus 2 information signal that obtains that scans and entering main frame 6, can cooperate a computer assistant software, sweep signal is converted to the corresponding character code, and as various application.

Consult the exploded view of the pen-type scanner of of the present invention direct and computer printer port line shown in Figure 2 again, pen-type scanner 2 mainly comprises: shell 21, scanning positioning auxiliary device 22, orienting device 23, light source 24, light source guidance device 25, lens 26, light source detection device 27, control transformation circuit 28 and range encoder 29.

The enclosure designs of above-mentioned pen-type scanner 2 becomes the external form of similar pen, with the gripping that makes things convenient for the user with move, the place ahead of shell is for receiving the catoptrical signal end of file, it is provided with one scan positioning auxiliary device 22, and scanning positioning auxiliary device 22 comprises an observation window 221 and a center line 222 that indicates on it, when the user will do the scanning input to a certain sentence, observation window 221 is covered on the scanning sentence fully, because of observation window is transparent design, so the user can see easily whether scanister 2 has been aimed at and will scan paragraph, and a center line 222 is arranged on observation window 221, give the user in scanning process, judge the sentence that direction has or not inclined to one side difficulty to scan; Simultaneously, add a directed device 23, its orienting device 23 is mainly certain way roller, the stability of direction when doing rectilinear scanning with increase.

The circuit block diagram that cooperates the pen-type scanner of consulting of the present invention direct and computer printer port line shown in Figure 3 simultaneously.When scanning, light is penetrated by light source 24, in order to cooperate lip pencil external form of the present invention, light source 24 is as if the front end of design at pen, may cause the excessive inconvenience that causes gripping when using of volume of anterior end of pen, so can will move to the stage casing part of the form of a stroke or a combination of strokes behind light source 24 positions, but derive another problem, light beam can't be incident upon on the file that will scan equably, so make leaded light with light source guidance device 25, its light source guidance device 25 is a light guide plate, the light beam that it can be sent light source 24, do multiple total reflection by the minute surface of light source guidance device 25, the scattered light of all the other directions is reduced to minimum level, and can be incident upon the file paper equably; Simultaneously,, see through lens 26 and focus on, be radiated at light source detection device 27 and carry out sensing,, just can on long and narrow pen-type scanner, obtain good projection and distribute with above-mentioned light source guiding structural via the reflected light that shade caused on the file.

The news face that scans required detection because of the pen type mode is less, so the inducing pixel of light source detection device 27 also can be less, device 27 is the CCD device of a short pixel, because of its institute must sensing information transmitted amount few, the speed of its transmission and processing is accelerated, and sweep length is little, lens are as long as imaging evenly in low-angle, make the requirement of lens 26 on quality and precision that cooperates reduce, many that image scanner is in the past met with have in design been exempted because of disturbing, and control transformation circuit 28, the electric potential signal that light source detection device 27 can be exported, cooperate the output that detects the moving range encoder 29 of little translation, convert the signal that is fit to the reception of printer port to, so that scanning result is sent into host computer.

In sum, of the present invention directly and the pen-type scanner of computer printer port line, really can be by the above-mentioned exposure of doing, and reach following advantage:

1. do input scan with one time one row or one at random immediate mode, allow the user when the scanning input, feel that more imagination of the present invention thoughtfully reaches conveniently.

2. no longer include secondary editor's trouble and puzzlement, especially in directly when input of some list, the superior efficacy of the direct editing of " you obtain you are needed just " is reached in the waste that can save many unnecessary edit sessions.

3. light source is little, than power saving, is useful in the supply of battery as electric power.

4. scanning plane is little, can use the CCD device of economic power saving, the less pixel of tool and the lens of general quality.

5. directly obtain needed literal, so that the information that must transmit, store and process tails off, processing speed accelerates, general performance thereby significantly lifting, and can directly transmit with the printer port, not only install easily, exempted the restriction of different type of machines docking port card, and splendid Portability has been arranged.

6. slender light and handy configuration design, it is convenient to grip, and it is handy to feel more during use.

Claims (6)

1, a kind of directly and the pen-type scanner of computer printer port line, it mainly is to connect by printer port and host computer, it is characterized in that:

Include:

Involucrum, it is made into the shape of pen;

Light source, it leans on the part of back segment in the centre of described shell, and its ray cast of launching is on paper;

The scanning positioning auxiliary device, it is positioned at the fore-end of described shell;

Lens, its reception is reflected the signal of video signal that transmits by described light source projects on file, send after described lens refraction;

The light source detection device, it is positioned at described enclosure, receives the signal of video signal that sends after the described lens refraction, and is converted into electric potential signal output, and described light source detection device is the charge-coupled image sensor of a short pixel;

Range encoder is the transversal displacement that detects described scanner, and the carry-out bit shifting signal;

The control transformation circuit, mainly be to receive the electric potential signal of described light source detection device output and the displacement signal of described range encoder output, make conversion process through described control transformation circuit, export one and be fit to the signal that described printer port transmits, send into host computer again.

2, according to claim 1 directly and the pen-type scanner of computer printer port line, it is characterized in that:

Described pen-type scanner also includes a directed device, and described orienting device is a directed roller.

3, according to claim 1 and 2 directly and the pen-type scanner of computer printer port line, it is characterized in that:

Described pen-type scanner also includes a light source guidance device.

4, according to claim 3 directly and the pen-type scanner of computer printer port line, it is characterized in that:

Described scanning positioning auxiliary device also includes an observation window.

5, according to claim 3 directly and the pen-type scanner of computer printer port line, it is characterized in that;

Described light source guidance device is a light guide plate.

6, according to claim 4 directly and the pen-type scanner of computer printer port line, it is characterized in that:

Also include a center line on the observation window of described scanister.

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