JP3003700B2 - Output control device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an output control device that analyzes sent data received from an external device, creates text data, and outputs the text data at an output unit. [Prior Art] Conventionally, a device that processes various data, for example, a laser beam printer, has been developed with a model equipped with a received data dump (DUMP) function in order to determine the authenticity of received data. In many cases, the output mode is set as an output mode independent of normal text output. That is, in the normal text output mode, the received character code is replaced with a character pattern and output, the control information is converted into the corresponding control process, and the control information is printed out in a format as shown in FIG. ing. FIG. 4A is a schematic diagram for explaining an example of a character string printed and output. In order to print each character string shown in this figure, character code information corresponding to the print character string and print control information regarding printing are received, and the character string actually printed corresponds to the character code. It is only a character string. For example, even if a printing error is found, it cannot be analyzed where an error has occurred in the received data. Therefore, when the dump output mode is set, as shown in FIG. 4B, the control information and character code information received for the print character string shown in FIG. It is configured to output directly in hexadecimal, for example, without processing. With reference to such a dump output and a predetermined dump determination manual, analysis of the received data is performed to determine the authenticity of the transmitted data. [Problems to be Solved by the Invention] However, for example, when the device that processes the received data is an image output device such as a laser beam printer, the transmitted data transmitted from the host side is simply characters. Not only character code data (character information) for output, but also control command data (control information) for controlling printing and various parts of the image output device, image data (image information) used for image output, and the like. Information is included. Among them, since a unique data format is set for the control information and the image information, the data requested by the user cannot be output unless data conforming to the data format is received. However, in many cases, erroneous data is often created due to a user's operation mistake or misunderstanding. Therefore, the dump output mode as described above is often set in advance. However, as shown in FIG. 4 (b), in the conventional dump output, since monotonous numerical data in hexadecimal numbers continues for a long time, it must be patiently judged as a manual for dump data explanation. With the increase in the amount of dump output data, careless mistakes cause data to be overlooked even though it is actually wrong data, or are recognized as incorrect data despite being correct data, and are duplicated. There is a problem that the recognizability and discriminability of the dent output data are low, such as being erroneous, and the dent output data processing is significantly impaired. SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem. When the dump mode is selected, an error mark is added to detected reception data without outputting text data and other normal data is output. Provided is an output control device capable of obtaining a dump result in which normal reception data and error data in the reception data can be simultaneously and with good visibility by causing the output unit to output the reception data so as to be distinguishable from the reception data. Aim. [Means for Solving the Problems] An output control device according to the present invention is an output control device that analyzes received data received from an external device to create text data and outputs the text data at an output unit. A detection unit for detecting an error, and when the dump mode is selected, an error mark can be added to the reception data detected by the detection unit without outputting the text data, so that the reception data can be distinguished from other normal reception data. And control means for causing the output unit to output. Further, when an error of the control code in the received data is detected, the control means adds an error mark to the control code. Further, the control means adds an error mark to the image data when an error of the image data in the received data is detected. The output unit is a printing unit. Further, the output unit is a display. [Operation] In the present invention, when the dump mode is selected, an error mark is added to detected reception data without outputting text data, and the detected reception data is output from the output unit so as to be distinguishable from other normal reception data. As a result, it is possible to obtain a dump result that allows simultaneous identification of normal reception data and error data in the reception data with good visibility. FIG. 1 is a block diagram showing the configuration of a page printer to which an output control device according to an embodiment of the present invention can be applied. Reference numeral 1 denotes a host computer, which includes character data (character codes) and control commands (control codes). ) Is generated and input to the character generation control unit 2. An input buffer 3 temporarily stores character data (character codes) and control commands (control codes) input from the host computer 1. Reference numeral 4 denotes a CPU constituted by, for example, a general-purpose microprocessor. The CPU 4 analyzes input data stored in the input buffer 3 in the normal printing mode, performs control corresponding to a command received, and executes a character corresponding to a character code. Select a pattern,
The output is expanded in the output page buffer 7. On the other hand, in the dump output mode, all received data transmitted and received are output to the dump generator 6 as dump data 4b. At this time, the CPU 4 determines whether the received data is “data that is actually output as characters”, “command data for performing some control”, or “data in which the numerical value itself such as image data is significant”. Judgment, judgment data (grammar data) stored in advance according to the type of the judged data and received data are sequentially judged, and when a grammatical error is detected, an error mark output command 4a
Is sent to the error mark control unit 5. When receiving an error mark output command 4a from the CPU 4, the error mark control unit 5 sends error mark data 5a for outputting a predetermined error mark to the dump generator 6 serving as the error information output means of the present invention. I do. The dump generator 6 converts the error mark data 5a and the dump data 4b transmitted and received from the error mark control unit 5 into a character pattern 6a and transfers the character pattern 6a to the output page buffer 7. The output page buffer 7 sequentially stores the character patterns 6a in accordance with the output position control information 4c. When the storage of the character pattern 6a is completed, the dot image 7a is converted into a video signal 8a via the printer interface unit 8 and sent to the page printer 9 after setting the I / O timing of the page printer 9. . FIG. 2 is a view for explaining an example of dump output output from the page printer 9 shown in FIG. 1. Reference numeral 21 denotes normal data, and error mark information is added when the description grammar of the received data is correct. Instead, the received data is output.
An error mark 22 is output when the grammar of the control information (command) is not created according to the rules. In this example, the command [cs 200; 200 B] to be received is actually "2" like the command [cs 200; 200 ec B].
Since the code `` ec '' is inserted after `` 00 '', it indicates that the command analysis has been abnormally terminated, and the error mark 22 can be distinguished from other received data at the insertion position of the code `` ec '' Output state. An error mark 23 indicates that the description format of the received image data was erroneously transmitted. That is, this part
Hexadecimal character string (0,1,2,3,4,5,6,7,8,9, a, b, c, d, e,
Despite the fact that the character data of "g" out of the rule has been transmitted despite the fact that it must be constituted by f), it indicates that error mark 23 is output at that position so as to be distinguishable from other received data. It is. Next, a dump output control operation according to the present invention will be described with reference to FIG. FIG. 3 is a flowchart for explaining the dump output control operation in the present invention. Note that (1) to (9) indicate each step. When the output is started, transmission of the data code from the host computer 1 is started. First, the data stored in the input buffer 3 is read one unit at a time (1). Next, it is determined whether or not printing of all the input data stored in the input buffer 3 has been completed (2). If YES, the printing is completed. On the other hand, if the determination in step (2) is NO, it is determined whether the current output mode is the dump mode (3). If NO, the received data is printed out according to the normal text output rules (4). ), And return to step (1). On the other hand, if the determination in step (3) is YES, it is further determined whether the received data is output as a character corresponding to the code, that is, character information (5). The character dump is printed out according to the dump expression format for (6), and the process returns to step (1). On the other hand, in the case of NO in step (5), that is, dump output processing of control data or image data is performed (7). Whether the content is grammatically correct (contents O
K) is determined (8), and if YES, the process returns to step (1),
If NO, an error mark is printed at the location of the erroneous data (9), and the process returns to step (1). This eliminates the need for the user to visually check whether the contents of the dump are grammatically correct from the first data, and can grasp the authenticity of the received data at a glance, and can promptly shift to data correction. In the above embodiment, a page printer has been described as an example. However, the present invention is not limited to this, and the present invention can be easily applied to a medium for transmitting and receiving character information and control information and analyzing and outputting the information, for example, a display device. Thus, it is possible to easily confirm and correct the received data. In the above embodiment, “character information”, “control information”,
Although the case where dump output is performed for three types of data such as "image information" has been described, it is possible to identify the authenticity of other combinations and data of other complicated control systems by similar processing. It is possible to output. [Effects of the Invention] As described above, according to the present invention, when the dump mode is selected, an error mark is added to detected reception data without outputting text data and other normal reception is performed. Since the output unit outputs the data so as to be identifiable from the data, it is possible to obtain a dump result in which normal received data and error data in the received data can be simultaneously identified with good visibility.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a configuration of a page printer to which an output control device according to an embodiment of the present invention can be applied, and FIG. 2 is output from the page printer shown in FIG. FIG. 3 is a diagram illustrating an example of a dump output, FIG. 3 is a flowchart illustrating a dump output control operation according to the present invention, and FIG.
Is a schematic diagram for explaining an example of a character string printed out.
FIG. 4B is a schematic diagram illustrating the dump data output of the character string shown in FIG. In the figure, 1 is a host computer, 2 is a character generation controller, 3 is an input buffer, 4 is a CPU, 5 is an error mark controller, 6 is a dump generator, 7 is an output page buffer,
Reference numeral 8 denotes a printer interface unit, and 9 denotes a page printer.

Claims (1)

(57) [Claims] An output control device that analyzes received data received from an external device to create text data and outputs the text data at an output unit, wherein a detecting unit that detects an error in the received data, and a dump mode is selected. Control means for adding an error mark to the reception data detected by the detection means and outputting the data to the output unit so as to be distinguishable from other normal reception data without outputting text data. Output control device. 2. The output control device according to claim 1, wherein the control unit adds an error mark to the control code when an error of the control code in the received data is detected. 3. The output control device according to claim 1, wherein the control unit adds an error mark to the image data when an error of the image data in the received data is detected. 4. The output control device according to claim 1, wherein the output unit is a printing unit. 5. The output control device according to claim 1, wherein the output unit is a display.