JPH06131133A - Language switching device of printer - Google Patents

Abstract

PURPOSE:To correctly switch a printer language processing part even when print data of a different language are successively sent by recognizing the end of received data when an end sequence is detected or the limit time for waiting next data is exceeded in a current operation language state after reception. CONSTITUTION:A reception part 3 receives print data sent from a host device 1, and sends and stores them in a receiving buffer 8. An operation language decision part 4 decides which of two kind of printer languages A and B the data correspond to, determines an interpreting means which should operate corresponding to the language, and specifies so as to operate a printer language A interpretation part 5 or 6. The specified language interpretation part 5 or 6 inputs the received data from the receiving buffer 8, and interprets and processes the received data in its own printer language until the reception intervals of the received data increase above a certain time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to a printer having a plurality of printer languages, analyzes the print data received from the host device, and switches the printer language to operate the printer according to the designated printer language. Regarding the device.

[0002]

2. Description of the Related Art FIG. 4 is a block diagram showing an example of a conventional language switching device for a printer.

A conventional printer language switching device for use in a printer having a plurality of printer languages and analyzing print data (received data) received from a host device to operate the printer in a designated printer language is known. As shown in FIG. 4, the receiving unit 43 in the receiving module 47 receives the print data transmitted from the host device 41.
Received and stored in the receive buffer 48. At this time,
A command (switch command) for analyzing the received data in the operation language determination unit 44 in the reception module 47 to determine the processing means to operate and switching to the processing means.
Is added to the beginning of the received data and stored in the reception buffer 48. A switching command is also added to the subsequent received data as necessary.

The reception data stored in the reception buffer 48 is sent to the data processing module 49. Since the data processing module 49 processes two different printer languages, the printer A language processing unit 45 and the printer B
It has two printer language processing units including a language processing unit 46, and the received data is sent to the corresponding printer language processing unit by a switching command added to the head thereof to be processed.

The operating language determination section 44 also recognizes the end of a series of received data depending on whether the reception interval of the received data is open for a certain time or longer.

[0006]

The conventional language switching device for a printer as described above requires two processors, a dedicated processor for the receiving module 47 and a dedicated processor for the data processing module 49. Therefore, there is a drawback that the manufacturing cost is high. Further, since only the reception interval of the received data is adopted as means for recognizing the end of the received data, when print data of different printer languages are continuously sent, the corresponding printer language processing unit There is also a problem that the probability of failing to switch to is high.

[0007]

A printer language switching device according to the present invention comprises a receiving unit for receiving print data from a host device, a receiving buffer for storing the print data received by the receiving unit, and the receiving buffer. An operation language determining unit that determines a printer language of the print data stored in the printer and determines an interpreting unit to operate, and the print data stored in the reception buffer is predetermined according to an instruction of the operation language determining unit. And a plurality of printer language interpreting units for interpreting according to the printer language of one, and the following data in the current operating language state when a termination sequence is detected in the plurality of printer language interpreting units or after reception is completed. This includes recognizing the end of received data when the time limit until waiting is exceeded.

[0008]

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a transition diagram showing the operation of the operation language determination unit of the embodiment of FIG. 1, and FIG. 3 is an operation language determination unit in the embodiment of FIG. FIG. 6 is a relational diagram showing a relationship between an event referred to by the printer for determining a printer language and a score corresponding to the phenomenon.

In FIG. 1, the receiving unit 3 is a host device 1.
The print data sent from is received and sent to the receiving buffer 8 for storage. The operation language determination unit 4 determines which of the two types of printer languages, A language and B language, the printer language of the received data stored in the reception buffer 8 corresponds to. The interpreting means to be operated is determined, and the printer A language interpreting section 5 or the printer B language interpreting section 6 corresponding to each language is designated to operate.

The printer A language interpretation unit 5 or the printer B language interpretation unit 6 designated by the operation language determination unit 4 is
The received data is input from the receive buffer 8, and the received data is interpreted and processed in its own printer language until the reception interval of the received data opens for a certain time or more, or until the end sequence indicating the end of the printer language is detected. To do. The operations of the printer A language interpreter 5 and the printer B language 6 are controlled and operated by the basic unit 7 in the same processor 2. The basic unit 7 controls the operation of each unit of the printer in addition to the control of the operation of each unit described above.

The identification of the printer language in the operation language determination unit 4 is performed by referring to the score 32 given corresponding to the phenomenon 31 as shown in FIG.

That is, a sequence having a high appearance frequency is extracted for each of the A language and the B language, and the level 2 is extracted.
The sequence and the level 3 sequence are defined, and weighting is performed by giving a score 32 corresponding to their importance. In addition, there is information about what was the state before the state currently being interpreted, and unprinted data (data that has been analyzed but has not been printed) exists inside the printer. A score of 32 is also given to the information indicating whether or not it is present, and these are taken into consideration in the determination of the language.

In the identification method using this, the received data is searched from the beginning to detect whether or not there is the level 2 sequence or the level 3 sequence extracted in FIG. When these sequences are detected, the points given to them are added for each language to obtain the final total score. Further, the score corresponding to the state before the state currently being interpreted is also added, and the language having the larger total score is determined to be the printer language of the received data. If there is a tie, the language of the one decided in advance will be used. The level 1 sequence is a sequence that can be definitely determined to be the A language or the B language if the received data includes the sequence. These are:
It is extracted and determined in advance. This is used as a condition for transition routes 2 and 3 which will be described later, and enables a printing operation to be performed quickly.

The operation of the operation language determination section 4 is as shown in FIG.

That is, the operation language determination unit 4 determines that the C state 1
A printer language indeterminate state 11 having two states, a D state 13 and an A state 15, and a B language state 16
And the printer language finalized state 14 having two states of.

In the C state 12, when there is received data in the receiving buffer 8 (information regarding the presence or absence of unprocessed data is on), the level 1 sequence is searched. At this time, it is monitored whether print data of a specified amount or more is received or whether the second time limit TO2 (time limit for receiving the data for the identification algorithm after the start of reception) is reached, and at the same time, new received data is received. Perform a level 1 sequence search for.

In the D state 13, the received data in the receiving buffer 8 is analyzed according to the identification algorithm to determine the operation language. When the A language is determined, the printer A language interpreting unit 5 is activated by notifying each unit of the printer that the printer language is the A language, if necessary. Also,
The received data in the reception buffer 8 is transferred to the printer A language interpretation unit 5
At the same time, the transition condition of the route 26, which is a route for transiting from the A language state 15 to the C state 12, is monitored. When the transition condition of the route 26 is detected, the end of the processing of the received data in the A language before that is waited, and if necessary, each unit of the printer is notified that the processing in the A language is completed.

When the B language is determined, the printer B language interpretation unit 6 is activated by notifying each unit of the printer that the printer language is the B language, if necessary. Further, at the same time when the received data in the reception buffer 8 is passed to the printer B language interpretation unit 6, the transition condition of the route 27, which is a route for transiting from the B language state 16 to the C state 12, is monitored. When the transition condition of the route 27 is detected, it waits for the end of the processing of the received data in B language before that, and if necessary, notifies each part of the printer that the processing in B language is completed.

When the print data of the specified amount or more is received in the C state 12, or when the second time limit TO2 is exceeded, the route 21 transits to the D state 13.
At this time, a process of setting a buffer storing unanalyzed received data and information indicating the beginning of the data (setting of buffer information 1) is performed.

When the level 1 sequence of the A language is detected in the C state 12, the route 22 transits to the A language state 15. The processing at this time is the setting of the buffer information 1.

When the B language level 1 sequence is detected in the C state 12, the route 23 transits to the B language state 16. The processing at this time is also the setting of the buffer information 1.

When the D state 13 is analyzed according to the identification algorithm and determined to be the A language, the route 24 transits to the A language state 15. The processing at this time is the setting of the buffer information 1, but the information set in the C state 12 can be used as it is.

When it is determined in the D state 13 that the language is B by analysis according to the identification algorithm, the route 25 transits to the B language state 16. The processing at this time is also the setting of the buffer information 1, but the information set in the C state 12 can be used as it is.

When the end of the A language is detected in the A language state 15, or when the first time limit TO1 (time limit for waiting for the next data in the current operating language state after the end of reception) is exceeded , Route 26 changes to C state 12. The processing at this time is a set of the buffer information 2, the information regarding the presence / absence of unprocessed data, and the information regarding the presence / absence of unprinted data. Buffer information 2
Is information indicating the last position of the data that has been interpreted and the buffer in which the data is stored, with respect to the received data received by the processor 2.

When the end of the B language is detected in the B language state 16 or when the first time limit TO1 is exceeded, the route 27 transits to the C state 12. The processing at this time is the same as that at the time of transition by the route 26.

[0027]

As described above, the printer language switching device of the present invention includes a receiving unit for receiving print data from the host device, a receiving buffer for storing the print data received by the receiving unit, and a receiving buffer. An operation language determination unit that determines the printer language of the stored print data and determines an interpretation unit to operate, and interprets the print data stored in the reception buffer according to the instruction of the operation language determination unit in a predetermined printer language. A plurality of printer language interpreting units are configured by a single processor, and a time limit for waiting for the next data when the termination sequence is detected in the plurality of printer language interpreting units or after the reception ends in the current operating language state is set. By recognizing the end of the received data when it exceeds, there is an effect that the manufacturing cost can be reduced, And, different when the printer language the print data is sent continuously, there is an effect that can be performed without Mari erroneous switching of the printer language processor.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a transition diagram showing the operation of the operation language determination unit of the embodiment of FIG.

FIG. 3 is a related diagram showing a relationship between a reference event and a score corresponding to it, which the operation language determination unit refers to for determining a printer language in the embodiment of FIG.

FIG. 4 is a block diagram showing an example of a conventional language switching device for a printer.

[Explanation of symbols]

 1.41 Host device 2 Processor 3.43 Receiving section 4.44 Operating language determination section 5.45 Printer A language interpreting section 6.46 Printer B language interpreting section 7 Basic section 8.48 Receive buffer 11 Printer language undetermined state 12 C state 13 D state 14 Printer language confirmation state 15 A language state 16 B language state 21 to 27 route 31 event 32 points 47 reception module 49 data processing module

Claims (2)

[Claims] 1. A receiver for receiving print data from a host device, a receive buffer for storing the print data received by the receiver, and a printer language of the print data stored in the receive buffer are determined. An operation language determining unit that determines an interpreting unit that should operate, and a plurality of printer language interpreting units that interpret the print data stored in the reception buffer in a predetermined printer language according to an instruction from the operation language determining unit. A printer language switching device comprising a single processor. 2. A receiving unit for receiving print data from a host device, a receiving buffer for storing the print data received by the receiving unit, and a printer language of the print data stored in the receiving buffer is determined. An operation language determining unit that determines an interpreting unit that should operate, and a plurality of printer language interpreting units that interpret the print data stored in the reception buffer in a predetermined printer language according to an instruction from the operation language determining unit. Comprised of one processor, the termination of the received data when the termination sequence is detected in the plurality of printer language interpretation units or when the time limit for waiting for the next data in the current operating language state after the end of reception is exceeded A language switching device for a printer, characterized in that it includes recognition.