JPH02300853A - Information retrieving device - Google Patents

Abstract

PURPOSE:To retrieve and correct erroneous code information in the short time by identifying the presence or the absence of the code information and detecting whether the code information is correct or not and retrieving code the information where error is detected. CONSTITUTION:Code information of a bar code or the like is given on a document together with information main body such as picture information or character information, and the code information is read by a reader 17. The reader 17 is provided with an erroneous code information detecting means which detects whether read code information is correct or not, and the error (failure of read) of code information is detected based on check digits incorporated in the code information. The code information is read in such a manner when it is detected by a document detecting sensor 18 that a document 15 exists in the read position. Consequently, the object of the operator's code correcting work is limited to only a recorded picture retrieved by the retrieval information of erroneous code information. Thus, the processing time required for correction and confirmation of erroneous code information is shortened.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a code such as barcode information added to the main body of information, such as pictorial information or text information, recorded on a document serving as a recording medium. The present invention relates to an information retrieval device that searches the main body of information using information, and particularly relates to a technique for retrieving and correcting code information that has been read incorrectly.

(Prior Art) Conventionally, this type of information retrieval device has been used in an image recording device that reads and records information as optical or electrical image information, for example. Such image information is read together with code information such as a bar code attached to the information body, and the code information is treated as search information when searching the recorded image information. When reading the code information, if the code information is erroneously read due to a reading error or the like, a reading failure signal is recorded instead of the code information. Therefore, once the operator has recorded a certain amount of image information,
By searching for the reading failure signal, image information to which code information that has failed to be read can be retrieved from, for example, a CRT.
The search information (code information) was corrected by reading the correct code information visually from the displayed image and inputting it from a keyboard or the like.

(Problem to be Solved by the Invention) However, the above reading failure signal is recorded not only when reading fails as described above, but also when the existence of code information is not confirmed. Since it is recorded as a failure, a reading failure signal is recorded for all image information to which no code information was originally attached, resulting in an enormous amount of code information correction work. There was a drawback.

For example, when recording on a recording medium that has code information attached to only one cover page, such as literature, and no code information on the second and subsequent pages, most of the recorded images On the other hand, search information based on the read failure signal is given. As a result, in order for the operator to check whether the search information has been created correctly, the recorded image with the search information (most of the processed image information) due to the read failure signal must be
It is necessary for the operator to search and visually check the information, which requires an unrealistically large amount of time.

The present invention has been made to solve the problems of the prior art described above, and its purpose is to detect reading failures for code information that does exist, and to shorten the work of searching and correcting erroneous code information. An object of the present invention is to provide an information retrieval device that can be converted into time.

(Means for Solving the Problems) In order to achieve the above object, the present invention includes a reading means for reading code information given to the information body, and reads the information body based on the code information. In the information retrieval device for searching, an identification means for identifying the presence or absence of the code information, a detection means for detecting whether the code information read by the reading means is correct when the code information is present, and searching for code information in which an error is detected. It is characterized by comprising a search means.

Note that it is effective for the identification means to identify the presence or absence of code information based on a check digit included in the code information.

(Function) In the present invention having the above configuration, only the code information that has failed to be read can be searched among the food information that does exist, and the code information for the food information to which no code information was originally attached can be searched. It will not be searched as an error.

Note that since the presence or absence of code information is determined based on the presence or absence of a check digit contained in the code information itself, there is no possibility of misidentification as code information due to dirt on the image.

(Example) The present invention will be explained below based on illustrated embodiments.

FIG. 1 is a circuit diagram of an image recording device to which an information retrieval device according to an embodiment of the present invention is applied, and FIG. 2 is a configuration diagram of the image recording device shown in FIG. 1.

In FIG. 2, 11 is a drive roller driven by a drive motor (not shown), 12 is a roller that forms a conveyance path together with drive roller 11 and conveyor belt 13, and 14 is a roller that is paired with drive roller 11 to be recorded. This is a supply roller that pulls out the document 15 as a medium from the document table 16. Manuscript 15 is
The conveyor belt 13 driven by the drive roller 11 conveys it in the direction of the roller 12 .

On the manuscript, along with the main body of information such as pictorial information and text information,
Code information such as a bar code is provided, and the reading device 17 reads the code information.

The reading device 17 includes an erroneous code information detection means for detecting whether the read code information is correct or incorrect, and detects an error (reading failure) in the code information based on, for example, a check digit included in the code information. Reading of such code information is performed when the document detection sensor 18 detects that the document 15 is present at the reading position. In addition, the code information and information body on the manuscript are imaged by the recording device 19, and are recorded as optical image information on, for example, a microfilm or a photoreceptor as an image carrier, or as electrical signals on an optical disk, a magnetic disk, etc. recorded as.

Next, the present invention will be explained in detail based on FIG. As shown in FIG. 1, the above-mentioned reading device 17 has a scanner 1 as a reading section and a decoder 2 as an erroneous code information detection means. If it is correctly decoded, food data b is output, and if it is determined that there is an error, a reading failure signal C is output. Note that the check digit used for the above-mentioned correctness check is also used when identifying the presence or absence of code information, and the above-mentioned decoder 2 also functions as an identification means. That is, the above data b or C is output only when the code information is certainly present and the check digit is decoded.

The gate 3 sends the output of the decoder 2 (data b or signal C) to the CPU 4 only when the document detection sensor 18 detects the document 15 and outputs the detection signal d. The CPU 4 corresponds to a search means, and based on the data b, c, which is the output of the gate 3, and the detection signal d, which is the output of the document detection sensor 18, the CPU 4 searches the search information of the image information and the search information of the incorrect code information. and store these search information in the memory 5.

In the above configuration, when, for example, 200 originals 15 are set and a start switch (not shown) is turned on, each part forming the transport path is driven, and the originals 15 move on the transport belt 13 to the left in FIG. start. Then, when the original 15 reaches the original detection sensor 18, a detection signal d is output.
The CPU 4 adds one to the address of the recorded image and sets the address to 001, waiting for the input of data b or CI.

Thereafter, as the original 15 moves to the left, while the detection signal d is being output, a check digit judgment is made for the first original, and if it is good, the code data b is sent from the decoder 2. The code data b1 is output from the gate 3. At the same time as the signal d is no longer output, the CPU 4 stores code information content corresponding to the code data b1, for example, 1234567, at address 001 of the memory 5 as recorded image search information. (Table 1
(See Table 1 Table 2) Next, when the second document is conveyed and reaches the document detection sensor 18 and a detection signal d is output, the CPU 4 adds one to the address of the recorded image to set it to address 002. Wait for data b+ or c.

At this time, if code information does not exist in the second document, the detection signal d is no longer output before data b and cl are output. In this case, the CPU 4 does not store any search information in the memory 5. After that, for example, if code information does not exist for the third to eighth manuscripts, only the address of the recorded image in the CPU increases without creating search information.

For example, when the 9th sheet of the document arrives, even though code information exists, if reading fails due to dirt on the document, etc., the decoder 2 will make a negative determination based on the check digit, so the code information will not be read. Data b is not output, but instead a reading failure signal C indicating the existence of code information is output. At this time, since the detection signal d is input to the gate 3, the reading failure signal C1 is output from the gate 3.
is output. When the document further moves to the left and the output of the detection signal d disappears, the CPU 4 stores the address 009 of the recorded image and its contents, for example * (indicating a reading failure), in the memory 5 as search information for the code information that has failed in reading. to be memorized. (Refer to Table 2 above) Table 3 Hereafter, when the code information shown in Table 3 is read, the same processing is performed each time, and the code information as shown in Table 1.2 above is stored in the slot 5. Search information for each recorded image and error code information is stored.

Furthermore, in order to complete the recorded image search information shown in Table 1, the operator searches for recorded images to which incorrect code information has been added based on the incorrect code information search information shown in Table 2 above. The correct code information is read from the searched recorded image and input using a keyboard (not shown), and the search information of the incorrect code information is corrected to the search information of the original recorded image (see Tables 4 (a) and (b)). ).

Table 4 (a) Table 4 (b) Note that in the above embodiment, the signal indicating that the content of the code information cannot be read by the check digit (reading failure signal C) is used as an identification signal indicating the existence of the code information. The means and the means for identifying the presence or absence of code information may be completely different. For example, if the original as a recording medium has a standard format as shown in Figure 3, the area A where the code information exists is known in advance, so the code can be determined based on the size of the black area in that area A. An identification means for identifying the presence or absence of information is also conceivable. In that case, for example, if the black area in area A is 1/20 or more, there is code information, and if the black area is 1/20 or less, there is no code information.
It can be identified as such.

(Effects of the Invention) The present invention has the above-described configuration and operation, and it is possible to easily search for incorrect code information by creating search information for code information that has failed to be read among existing code information. If the code information is originally not attached, it will not be searched as an error code information, and therefore the code correction work by the operator will be performed using the recorded image searched by the search information for the error code information. This makes it possible to greatly reduce the processing time required for correcting and confirming incorrect code information.

In addition, since the presence or absence of code information is determined based on the presence or absence of a check digit built into the code information itself, there is no possibility of mistakenly identifying the presence of code information due to smudges on the image, and no unnecessary reading failure signals are generated. .

[Brief explanation of drawings]

FIG. 1 is a circuit diagram of an image recording device to which an information retrieval device according to an embodiment of the present invention is applied, FIG. 2 is a configuration diagram of the image recording device shown in FIG. 1, and FIG. FIG. 3 is a diagram showing a code information existing area. Explanation of symbols 1...Scanner (reading means) 2...Decoder (identification means, detection means) 3...CP
U (search method)

Claims (2)

[Claims] (1) An information retrieval device comprising a reading means for reading code information attached to an information body and searching the information body based on the code information, an identification means for identifying the presence or absence of the code information; and code information. An information retrieval device comprising: a detecting means for detecting whether the code information read by the reading means is correct or incorrect; and a retrieval means for retrieving the code information in which an error has been detected. (2) The information search device according to claim 1, wherein the identification means identifies the presence or absence of code information based on a check digit included in the code information.