TW201805857A - Reading devices and methods for continuously scanning barcodes - Google Patents

Abstract

The invention discloses a reading device and a method for continuously scanning barcodes. A by-pass barcode is represented in the scanning range. When a scanning device of the barcode reading device continuously scans two object barcodes which each refer to its object, the scanning device determines whether the by-pass barcode is spaced during the period of continuously scanning two object barcodes. If yes, the barcode object for the latter object is determined as effectively reading. It not, the barcode object for the latter one is determined as ineffectively reading.

Description

Continuous scanning barcode reading device and method

The present invention relates to a reading device and method. In particular, the present invention relates to a continuous scanning bar code reading apparatus and method.

Bar code refers to the use of multiple black bars and blanks of different widths, or black blocks and blank blocks with different patterns, or stripes (or blocks) and blanks (or blank blocks) of multiple colors. A certain coding rule is arranged to express the graphic recognition element of the information. Since the black strip has the lowest reflectance to light and the white strip has the highest reflectance to light, when the light is irradiated onto the barcode, the black strip and the white strip have a strong contrast, so the reflectance of the light can be different by using the black strip and the white strip. Read barcode information.

Barcodes are already abundant in people's lives. For product packaging, documentation, merchandise advertisements, etc., barcodes have a place for users to read the barcodes and read the products, documents, merchandise advertisements, etc. by a device. Even the user profile of the user A, which is installed on the smart phone's communication application software "LINE", can be displayed on the screen in the form of a bar code for another user B to scan and read the action bar code on another smart phone. And user A is added as a friend of user B on "LINE". Therefore, people's lives and work actually need to rely on barcodes to make progress.

Barcode scanners can be divided into "CCD scan type" and "laser automatic scan type".

The "CCD scanning" barcode scanner is mainly composed of a light source, a charge coupled device (CCD) sensor and a decoder. Semiconductor light-emitting diode light source emits a wavelength of 600-660 The red light spot around nm, the red light spot moves linearly along a track. The "CCD Scanning" barcode scanner can read 3 to 4 mil density barcodes at a reading speed of 100 to 200 times per second. The CCD sensor receives black bars and white bars of bar codes. The decoder then converts the optical signal into a signal, removes the noise of the electrical signal, and then interprets the information of the electrical signal.

Another type of one-dimensional bar code scanner is "laser automatic scanning type". The red semiconductor laser of this type of bar code scanner emits laser light and then reflects it onto the bar code via a polygonal lens or rotating cymbal, and the bar code reflects the laser light to the bar code scanner.

The scanning mode of the barcode scanner can be at least divided into: automatic shutdown mode: after pressing the trigger button (trigger) of the barcode scanner, the scanning of the barcode scanner is triggered until the barcode is read, and if the barcode has not been read, the barcode is The scanner will try to scan until the preset cut-off time (for example, 3 seconds); continuous reading mode: the barcode scanner reads continuously without closing; if you want to read the same barcode, you need to remove the barcode scanner first. Re-targeting and scanning/reading the bar code; power auto-off mode: the bar code scanner does not stop scanning until the preset reading time, resets the reading time after each successful reading of the bar code; alternate mode: press the trigger button After that, the barcode scanner will start and continue until the next time the trigger button is pressed; the instantaneous mode: press the trigger button to start the scan until the trigger is released; the repeat reading mode: continuously read the barcode repeatedly. The difference from the continuous read mode is that the repeat read mode can be read repeatedly without removing the barcode scanner when reading the same barcode; and the laser mode (preset mode): Under the trigger button to start scanning, scanning will not stop until (a) successfully read the bar code, (b) not more than a preset number of seconds to read the bar code or (c) release the trigger key will stop scanning.

In the context of the consumer checkout in the store, the clerk aligns the hand-held (CCD scanning) barcode scanner one by one with the product barcode and presses the trigger of the barcode scanner to trigger the barcode. Scan, each product barcode is scanned and read to complete the checkout. When the quantity of one item is two or more, the clerk usually scans the barcode of the item once and enters two or more items on the cash register; or aligns the bar code of the item and continuously presses Trigger two or more times. However, if the number of times the trigger is pressed does not match the actual purchase quantity of the item, there will be a problem with the transaction. That is to say, the scanning mode design of the computer software, the timing and interval of pressing the trigger have a considerable correlation with the correct scanning.

In addition, the store clerk can also scan the product barcode to the scanning area of the fixed (laser auto-scan, continuous read mode) barcode scanner. Since the barcode scanner continuously emits red light to read the barcode of the scanned area, the clerk usually has to quickly scan the barcode of an item once and preset the time (for example, 3 seconds). Area, then scan the bar code of the next item. When the number of items is two or more, the clerk usually has to quickly scan the bar code of the item once within a preset time (for example, 3 seconds) and move the item out of the scanning area, and then the next one The bar code of the item (or the bar code of the same item) is scanned for the scanned area. Therefore, the checkout clerk needs to scan the scanning time of many commodity items in order to correctly complete the scanning, reading and checkout.

In the design of hand-held and fixed bar code scanners, a miniature speaker or indicator light is often provided to prompt the operator to complete the bar code reading by sound or light. However, as long as the sound or light prompt is unclear or not received correctly by the operator, this manual method still does not solve the problem of the barcode scanner correctly reading the barcode.

In addition, the bar code scanner of the continuous read mode needs to set the time interval at which the same bar code content is read and judged to be valid at the back end computer or system. If the time interval is too short, it will cause a product to be placed in the scan area slightly, but it will be read repeatedly, but the number is only one. If the time interval is too long, the waiting time for reading the bar code of the next item of the same item will be too long or the bar code scanner will not respond. Moreover, the operator also has to practice many times to get used to the setting of the time interval, which is quite inconvenient.

In view of the deficiencies in the prior art, the applicant of this case, after careful experimentation and research, and a spirit of perseverance, finally conceived the case and was able to overcome the shortcomings of the prior art. A brief description of the case.

In order to overcome the disadvantages of the prior art, the present invention discloses a bar code reading device and a bar code reading method thereof, the bar code reading device setting a background bar code indicating that it is not reactive or reactive, and the scanning device is reading two consecutive objects. Between the barcodes, the background barcode must be scanned as an interval, otherwise the barcode of the latter of the two objects is judged to be unsuccessful.

The invention discloses a barcode reading device, which comprises a scanning platform and a scanning device. A first bar code indicating no response is presented on the plane of the scanning platform. The scanning device is disposed relative to a plane and includes a lens having a visual range and having a scanning distance from the scanning platform. The lens is used for continuous scanning in the visible range and the scanning distance. When the first barcode is read, the scanning device does not react, and when the second barcode of an object masks the first barcode and is read, the scanning device displays the object. Information.

The invention further discloses a barcode reading device, comprising: a scanning platform and a scanning device. The plane of the scanning platform represents the background without reaction and places the object to be scanned. The scanning device is disposed relative to the plane, the scanning device continuously scans the bar code representing the object on the plane, and only when the background is read before reading the bar code, the scanning device determines that the bar code is a valid bar code.

The present invention further discloses a bar code reading method for a bar code reading device, the bar code reading device comprising a scanning platform and a scanning device configured with a lens, the lens having a visible range and having a scanning distance with the scanning platform, the barcode reading The method includes the steps of: providing a first barcode indicating no response on the scanning platform; and continuously scanning the lens within a visible range and a scanning distance, wherein when the first barcode is read, the scanning device does not react, and when the object is an object When the second barcode blocks the first barcode and the second barcode is read, the scanning device displays the information of the object.

The invention further discloses a barcode reading method of a scanning device, comprising the steps of: (a) providing a background barcode representing no reaction in the scanning range; and (b) when the background barcode is read When the scanning device does not respond.

In a specific embodiment, the barcode reading method further comprises the steps of: (c) providing an object having a target barcode within the scan range; and (d) scanning when the target barcode masks the background barcode and the target barcode is read. The device shows that the object has been scanned successfully. In a specific embodiment, the scanning device does not respond when the target barcode continues to mask the background barcode after completion of step (d).

The invention further discloses a barcode reading method for a scanning device, wherein the scanning device is configured to scan an object barcode representing an object, comprising the steps of: (a) providing a background barcode representing no reaction in the scanning range; and (b) when scanning the device When reading the same two object barcodes, it is judged whether the background barcode is separated during the period; and (c) if not, the object barcode is invalidated.

The invention further discloses a barcode reading method for a scanning device, wherein the scanning device is configured to scan an object barcode representing an object, comprising the steps of: (a) providing a background representing no reaction in the scanning range; (b) reading when the scanning device reads When the same two object barcodes are taken, it is judged whether the background is separated during the period; and (c) if not, an object barcode is invalidated.

The term "barcode" as used herein includes a one-dimensional bar code that expresses information in a single direction (for example, horizontal direction), a two-dimensional bar code that expands another dimension of readability information on the basis of one-dimensional bar code, and a combination of one-dimensional bar code and two-dimensional bar code. Barcode composite barcode.

The term "one-dimensional bar code" as used herein includes but is not limited to Code 39 bar code, interlaced 25 bar code (ITF bar code), EAN-13 bar code, EAN-8 bar code, ISBN book code, ISSN journal code, Code 128 bar code, Codabar barcode, UPC. Barcode, Code 93 Barcode, Code 11 Barcode, MSI Barcode, Plessey Barcode, Toshiba Code Barcode, Code 32 Barcode, RSS Barcode, and the like.

The term "two-dimensional bar code" as used herein includes but is not limited to linear stacked two-dimensional bar codes, matrix two-dimensional bar codes, and postal code two-dimensional bar codes. The linear stacked two-dimensional barcode is a two-dimensional barcode generated by stacking a plurality of one-dimensional barcodes in the longitudinal direction on the basis of the one-dimensional barcode coding principle, and includes but not limited to Code 16K barcode, Code 49 barcode, PDF417 barcode and And so on. Matrix 2D barcodes are encoded in a rectangular space by different distributions of black and white primitives in the matrix, including but not limited to Aztec barcodes, Maxi code barcodes, and quick response barcodes (Quick) Response code, QR code), Data matrix barcode, Vericode barcode, Ultracode barcode, Hanxin code, color barcode, and the like; the postal code 2D barcode is encoded by black straight strips of different lengths and is mainly used for encoding of mails. These include, but are not limited to, POSTNET barcodes developed by the US Postal Service (USPS), BPO 4-State barcodes developed by the UK Post Office, and the like.

1‧‧‧ barcode reading device

2‧‧‧Scanning platform

3‧‧‧ plane

4‧‧‧Background barcode

5‧‧‧Scanning device

6‧‧‧ lens

7‧‧‧Support arm

8‧‧‧ Processor

9‧‧‧Speakers

10‧‧‧ indicator light

11‧‧‧ scan range

12, 13‧‧‧ objects

12a, 13a‧‧‧ object barcode

D‧‧‧Scanning distance

R‧‧‧visible range

S100, S102, S104, S106‧‧‧ steps

S200, S202, S204, S206‧‧‧ steps

Figure 1 is a perspective view of a bar code reading device in accordance with an embodiment of the present invention.

Figure 2 is a side elevational view of a bar code reading device in accordance with an embodiment of the present invention.

3 is a flow chart of a bar code reading method of a scanning device according to an embodiment of the present invention.

4(A) to 4(D) are diagrams showing a bar code reading method using a bar code reading device according to an embodiment of the present invention.

Fig. 5 is a flow chart showing a bar code reading method of a scanning device according to an embodiment of the present invention.

The inventions set forth in the present disclosure will be fully understood from the following description of the embodiments of the present invention, which can be practiced by those skilled in the art. However, the implementation of the present invention is not limited by the following embodiments. Other embodiments may be devised by those skilled in the art in the light of the embodiments disclosed herein.

Please refer to FIG. 1 and FIG. 2, which are respectively a perspective view and a side view of a bar code reading device according to an embodiment of the present invention. In the first and second figures, the scanning platform 2 of the bar code reading device 1 has a plane 3 on which a background bar code 4 is disposed. The scanning device 5 of the barcode reading device 1 is provided with respect to the scanning platform 2. A lens 6 is disposed in the scanning device 5, the lens 6 faces the background barcode 4 on the plane 3, the scanning distance between the lens 6 and the background barcode 4 is D, and the lens 6 has a visible range R when scanning. Therefore, the lens 6 can be scanned to exist in the scanning distance D and the visual range. The background barcode 4 in the circle R (D and R are collectively referred to as "scan range") and the barcode of the object to be scanned. Since the lens 6 is disposed in the scanning device 5, the scanning range of the lens 6 is also basically referred to as the scanning range of the scanning device 5.

In the first figure, the background barcode 4 can be presented on a plane 3 composed of materials such as paper, wood board, plastic board, metal plate, alloy plate, glass plate, ceramic, or the like, which can be placed and printed. , pasting, inlaying, engraving or projection on the plane 3. Alternatively, the scanning platform 2 can be, for example, a desktop computer, a notebook computer, a tablet computer, a smart phone, an e-book reader, an electronic paper, a personal digital assistant, or the like, and the plane 3 of the scanning platform 2 can be electronic. The screen of the device is replaced. For example, when the scanning platform 2 is an e-book reader, the screen of the e-book reader presents a background bar code 4. Since the e-book reader uses electronic paper as a display element, it has the characteristics of applying an electric field to move the charged colored particles, and removing the electric field can maintain the electrostatic force of the colored particles for a period of time, so the e-book reader can be turned on. The background bar code 4 is displayed during the power supply and after the power is turned off, or the background bar code 4 is updated when the power is turned on. For example, when the scanning platform 2 is a tablet, the screen of the tablet presents a background bar code 4. In addition to the background barcode 4 for the lens scan, the tablet display can also display specific information (such as advertisements or text) for the user to browse. Alternatively, the position of the plane 3 can directly set the aforementioned electronic device having a screen.

In Fig. 2, the lens may be a lens in which a charge coupled device (CCD) photosensitive member or a complementary metal oxide semiconductor (CMOS) photosensitive member is disposed, and the lens may use a fixed focus lens or a zoom lens. The object to be scanned may be a sheet-like piece (such as paper, card) or a three-dimensional object. The sheet member can be placed on the scanning platform 2 (or plane 3) for scanning, or scanned in the form of a hand-held sheet member or a three-dimensional object. The lens is therefore preferably a zoom lens so that objects placed at different distances in front of the lens and within the scanning range can be scanned.

In FIGS. 1 and 2, since the lens 6 and the background barcode 4 need to be separated by a scanning distance D, the barcode reading device 1 can be provided with a support arm 7 to separate the scanning device 5 from the scanning platform 2 and to face each other. Configuration, and the scanning device 5 is obtained in the vertical direction or in any supporting direction support. The support arm 7 can also be designed as an adjustable length support arm to accommodate the size of the object to be scanned and to the lens specifications. Those skilled in the art will also appreciate that the support arm 7 does not limit the necessary structure of the bar code reading device 1 of the present invention. The scanning device 5 and the scanning platform 2 can be fixed to the fixture by conventional fixing techniques without passing through the support arm. 7 The scanning device 5 and the scanning platform 2 are physically connected together.

In the present invention, the background bar code 4 is a bar code representing no reaction or no reaction, and the scanning device 5 of the bar code reading device 1 does not react when reading the background bar code 4, and the scanning device 5 displays only when the object bar code is read. Information about the object. In Fig. 2, the scanning device 5 is provided with a processor 8 which is connected to the lens 6 and the speaker 9 (and/or the indicator light 10). The processor 8 reads the scanned image of the object barcode or the background barcode and decodes the image of the object barcode or the background barcode. When the object barcode is decoded from the information of the object, the processor 8 sends a signal to the speaker 9 (and/or the indicator light 10) to make a sound (and/or light). When analyzed as a background bar code, processor 8 does not respond and does not send a signal to speaker 9 (and/or indicator light 10), so speaker 9 (and/or indicator light 10) does not emit sound (and/or light).

In FIG. 2, the processor 8 and the speaker 9 (and/or the indicator light 10) are disposed in the scanning device 5. However, those skilled in the art will appreciate that the processor 8 and the speaker 9 (and/or the indicator light 10) may also be disposed on any device other than the bar code reading device 1, but still be part of the scanning device, or a bar code. The reading device 1 may not be equipped with the speaker 9 (and/or the indicator light 10).

Please refer to FIG. 3, which is a flowchart of a barcode reading method of a scanning device according to an embodiment of the present invention. In Fig. 3, a background barcode representing no reaction is provided within the scanning range of the scanning device (step S100). When the background barcode is read, the scanning device does not respond (step S102). An object having a target barcode (i.e., an object barcode) is provided within the scanning range (step S104). When the target barcode blocks the background barcode and the target barcode is read, the scanning device displays that the object has been successfully scanned (S106).

Further, when it is required to continuously read the barcodes of the same two objects, the scanning device determines whether the background strip is read between reading the first object barcode and the second object barcode. code. That is, after reading the first object barcode, the scanning device needs to read the background barcode, and then read the second object barcode. If the second object barcode is subsequently read into the scanning range after reading the first object barcode, the scanning device determines that the background barcode is not read first and determines that the scanning and reading of the second object barcode is unsuccessful. That is, the scanning device invalidates the second object barcode, and the scanning device needs to read the background barcode and then read the second object barcode.

Please refer to FIG. 4(A) to FIG. 4(D), which are schematic diagrams showing a bar code reading method by using a bar code reading device according to an embodiment of the present invention. In FIGS. 4(A) to 4(D), the boundary of the lens (not shown) scan is the position of the plane, so the background barcode 4 and the object barcodes 12a, 13a will enter the scanning range of the lens in different situations. 11. In Fig. 4(A), the lens shutter is opened and continuous shooting. The situation of FIG. 4(A) may be a state after the bar code reading device 1 is turned off and turned on, or a state in which the next code is read by the one-code reading work before the end (for example, completing the previous consumer purchase) The settlement of the goods is carried out for the checkout of the next consumer to purchase the goods). Since the background bar code 4 exists in the scanning range 11 and the background bar code 4 indicates that it is not reactive or requires no reaction, the scanning device of the bar code reading device does not react to the background bar code 4 in the case of continuous reading. In Fig. 4(B), the object 12 and its article barcode 12a enter the scanning range 11 and the object barcode 12a masks the background barcode 4 below. At this time, the scanning device reads the article barcode 12a and displays the information of the article 12 on the display device (not shown in Figs. 4(a) to 4(D)). In addition, the speaker (or indicator light) disposed in the scanning device emits a sound (or light) in response to the signal that the "object bar code 12a has been read" is received. In Fig. 4(C), the object 12 is moved out of the scanning range 11 to present the background bar code 4, and the scanning device does not react to the background bar code 4. In Fig. 4(D), the object 13 and its article barcode 13a enter the scanning range 11 and the object barcode 13a masks the background barcode 4 below. As shown in the operation principle of Fig. 4(B), the object barcode 13a is read to display the information of the object 13, and the speaker (or indicator light) receives the signal of "the object barcode 13a has been read" to emit a sound (or light).

In the specific embodiment of FIGS. 4(A) to 4(D), the background barcode 4 has to be read between the consecutively scanned object barcodes 12a and 13a to make the object barcode 13 as the second object barcode. The reading is determined to be a valid read barcode. Similarly, the specifics in Figure 4 (A) to Figure 4 (D) In the embodiment, when the object barcode 12a of the object 12 is continuously scanned twice (ie, FIG. 4(D) is to present the object 12 and its object barcode 12a), the scanning device needs to be scanned after the first successful reading of the object barcode 12a. The background barcode is read, and the object barcode 12a is read a second time.

When continuously scanning a bar code of a plurality of objects (for example, 2, 3, 4 or more objects) or a bar code of a plurality of identical objects, the scanning device needs to read in the scanning work between two adjacent objects. The background barcode 4 causes the reading of the object barcode as the next object barcode to be determined as a barcode that is effectively read.

In the present invention, if the object 12 is not removed within the scanning range 11 after the object barcode 12a is successfully read, the scanning device is second (or continues) because the scanning device has not read the background barcode 4 late. Attempts to read the unmoved object 12 still failed. Therefore, the technology of the present invention can solve the problem that an object barcode stays in the scanning range for a long time and is misjudged as a plurality of object barcodes, that is, the technology of the present invention can solve the problem that an object is actually misidentified as a plurality of objects. The present invention makes the second object barcode determined to be validly read by reading the background barcode between reading two consecutive object barcodes, that is, making the second reading of an object determined to be a valid read. take.

In the present invention, if the object 12 is placed in the scanning range 11 after the object barcode 12a is successfully read, and then the object 13 and its object barcode 13a are brought into the scanning range, the scanning device cannot simultaneously read in a scanning range. Taking two object barcodes 12a, 13a without reacting or reflecting an "error message"; or, the object barcode 13a masking the object barcode 12a below, since the background barcode 4 has not been read between the consecutively scanned object barcodes 12a and 13a, Therefore, the reading of the article barcode 13a of the masking article barcode 12a is judged to be invalid reading.

In a specific embodiment in which the background barcode is QR code, three corners of the four corners of the QR code are each provided with a "back" pattern as a positioning pattern of the QR code. In the present invention, if the object barcode 12a partially shields the background barcode 4 as the QR code below, since one, two or three positioning patterns of the background barcode 4 have been masked, or a version information of a part of the QR code, The format information, data and error correction code are obscured, and the scanning device cannot interpret the background strip. Code 4 can only interpret the object barcode 12a.

In the present invention, the background barcode 4 and the object barcodes 12a, 13a may be the same or different types of barcodes. For example, the background barcode 4 can be a QR code, and the object barcodes 12a, 13a can be a one-dimensional barcode. vice versa.

Based on the concept of the present invention, the aforementioned background barcode can be designed to represent a background that does not require reaction, and the background includes a particular pattern, symbol, text, or a combination of points, lines, and faces. Therefore, the bar code reading method of the scanning device as shown in Fig. 5 provides a background representing the unnecessary reaction within the scanning range of the scanning device (step S200). When the scanning device reads the same two object barcodes, it is judged whether or not the background is spaced during the period (step S202). If YES, the same two object barcodes are successfully read (step S204). If "No", the next object barcode is invalidated (step S206). After step S206, the next object barcode needs to be moved out of the scanning range, so that the scanning device re-scans the background, and then the next object barcode is placed in the scanning range, and the scanning device successfully reads the next object barcode.

The following embodiments will be described in conjunction with the above-described first to fifth figures.

Example 1

In the context of the consumer's checkout in the store, the plane 3 of the scanning platform 2 of the barcode scanning device 1 presents a QR code representing no reaction or no reaction, and the lens 6 of the barcode scanning device 1 faces between the plane 3 and the lens 6. The scan range is scanned. When no items have been scanned, the lens continues to scan for a QR code that does not respond. When the QR code of the product A is scanned in the scanning range, the scanning device 5 effectively reads the product information on the product A barcode, and the speaker 9 and the indicator light 10 emit sounds in response to the information that the effective reading of the product A has been received. light. After item A moves out of the scanning range, the lens continues to scan for a QR code that does not respond. Next, when the QR code of the item B is scanned in the scanning range, the QR code of the item B is effectively read and the item information is interpreted, and the speaker 9 and the indicator lamp 10 emit sound and light in the same manner.

When the QR code of the item A is effectively read and the item A stays within the scanning range, since the scanning device 5 cannot read the QR code representing no reaction or no reaction, the scanning is performed. Device 5 is not able to successfully read the next item barcode entering the scanning range.

What is to be scanned after the item B is two items C. The QR code of the first item C is scanned and moved out of the scanning range, and the QR code representing the non-reaction is scanned by the lens, and then the QR code of the first item C is again entered into the scanning range for reading by the scanning device 5. This completes the bar code reading of two items C.

Example 2

In the situation where the audience holds the ticket through the concert ticket gate, the QR code representing the unresponsive or unresponsive is displayed on the tablet screen, and the lens 6 of the barcode scanning device 1 scans the scanning range between the plane 3 and the lens 6. . When no tickets have been scanned, the lens continues to scan for a QR code that does not respond. When the QR code of the ticket A is placed within the scanning range, the scanning device 5 effectively reads the seat information of the ticket A at the same time. After ticket A moves out of the scan range, the lens continues to scan for a QR code that does not respond. Next, the QR code of the ticket B partially masks the QR code representing the non-reaction in the scanning range, and the QR code of the ticket B cannot be efficiently read by the scanning device 5. The operator removes the QR code of the ticket B out of the scanning range and then masks the QR code representing the non-reaction, and the scanning device 5 effectively reads the QR code of the ticket B. Thereafter, when the QR codes of the tickets C and D are simultaneously placed in the scanning range, the scanning device 5 cannot effectively read the QR codes of the tickets C and D at the same time. The QR codes of tickets C and D are all removed from the scanning range, and then the QR code scanning and reading of the tickets C and D are completed by scanning the first object barcode, the unresponsive background barcode, and the second object barcode in sequence.

The invention is a difficult and innovative invention, and has profound industrial value, and is submitted in accordance with the law. In addition, the present invention may be modified by those skilled in the art without departing from the scope of the appended claims.

1‧‧‧ barcode reading device

2‧‧‧Scanning platform

3‧‧‧ plane

4‧‧‧Background barcode

5‧‧‧Scanning device

6‧‧‧ lens

7‧‧‧Support arm

Claims (14)

A bar code reading device comprising: a scanning platform having a plane on which a first bar code indicating non-reaction is presented; and a scanning device disposed relative to the plane, the scanning device including a lens Having a viewing range and having a scanning distance from the scanning platform, wherein the lens is used for continuous scanning within the visible range and the scanning distance, when the first barcode is read, the scanning device does not react, and When a second barcode of an object masks the first barcode and is read, the scanning device displays information of the object. The barcode reading device of claim 1, wherein the scanning platform is an electronic device selected from the group consisting of a desktop computer, a notebook computer, a tablet computer, and a smart phone. An e-book reader, an electronic paper, and a group of a number of assistants, and the plane is a screen of the electronic device. The bar code reading device of claim 1, wherein the lens is provided with a charge coupled device (CCD) photosensitive element or a complementary metal oxide semiconductor (CMOS) photosensitive element. The bar code reading device of claim 1, wherein each of the first bar code and the second bar code is a one-dimensional bar code or a two-dimensional bar code. A bar code reading device comprising: a scanning platform having a plane representing a background without reaction and placing an object to be scanned; and a scanning device, the scanning device continuously scanning at a position relative to the plane The plane represents a bar code of the object, and the scanning device determines that the bar code is a valid bar code only when the background is read before reading the bar code. The barcode reading device of claim 5, wherein the background is one of a one-dimensional barcode and a two-dimensional barcode. A barcode reading method for a barcode reading device, the barcode reading device comprising a scanning platform and a matching a scanning device for setting a lens, the lens having a visible range and having a scanning distance from the scanning platform, the barcode reading method comprising the steps of: providing a first barcode on the scanning platform indicating that it is not reactive; And the lens continuously scans within the visible range and the scanning distance, wherein when the first barcode is read, the scanning device does not react, and when a second barcode of an object masks the first barcode and the first When the two codes are read, the scanning device displays the information of the object. The barcode reading method of claim 7, wherein when the second barcode partially masks the first barcode, the scanning device reads the second barcode and displays information of the object, and when the first When the two codes and the first barcode are simultaneously scanned, the scanning device does not react. The bar code reading method according to claim 7, wherein the lens is one of a zoom lens and a fixed focus lens. A bar code reading method for a scanning device, comprising the steps of: (a) providing a background barcode representing no reaction in a scanning range; and (b) not detecting the scanning device when the background barcode is read. The barcode reading method of claim 10, further comprising the steps of: (c) providing an object having a target barcode within the scan range; and (d) when the target barcode masks the background barcode and the When the target barcode is read, the scanning device displays that the object has been scanned successfully. The barcode reading method of claim 11, wherein the scanning device does not react when the target barcode continues to mask the background barcode after the completion of the step (d). A bar code reading method for a scanning device, wherein the scanning device is configured to scan an object barcode representing an object, comprising the steps of: (a) providing a background barcode representing no reaction in a scanning range; and (b) when the scanning When the device reads the same two barcodes of the object, it is determined whether the background barcode is separated during the period; and (c) if not, the barcode of the object is invalidated. A bar code reading method for a scanning device, wherein the scanning device is configured to scan an object barcode representing an object, comprising the steps of: (a) providing a background representing no reaction in a scanning range; and (b) when the scanning device When reading the same two barcodes of the object, it is judged whether the background is separated by the background; and (c) if not, the barcode of the object is invalidated.