CN2552068Y - Standard port expander for combined port printing equipment - Google Patents
Standard port expander for combined port printing equipment Download PDFInfo
- Publication number
- CN2552068Y CN2552068Y CN 02208870 CN02208870U CN2552068Y CN 2552068 Y CN2552068 Y CN 2552068Y CN 02208870 CN02208870 CN 02208870 CN 02208870 U CN02208870 U CN 02208870U CN 2552068 Y CN2552068 Y CN 2552068Y
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- port
- standard
- unit
- parallel port
- printing device
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Abstract
The utility model provides a standard port expander for a combined port printing apparatus. A standard port output end is connected with the input end of a conversion unit, and the output end of the conversion unit is connected with the input end of a multi-way switch unit; the output end of a standard combined port is connected with the input end of the multi-way switch unit, the output end of the conversion unit is connected with the input end of a connection port occupying logical judging unit, and the output end of the standard combined port is connected with the input end of the connection port occupying logical judging unit; moreover; the output end of the logical judging unit is connected with the input end of a switch control unit, and the output end of the switch control unit is connected with the control end of the multi-way switch unit; while the output end of the multi-way switch unit is connected with the standard combined port of the combined port printing apparatus. The utility model enables the combined port printing apparatus to have the standard port and the standard combined port, thereby enabling the printing apparatus to be compatible with all interfaces of a PC; besides, the expander can also satisfy the requirement that multiuser use one print apparatus, thereby realizing the purposes to take full advantage of the prior resources as well as facilitate the usage.
Description
Technical field:
The utility model relates to a kind of expanding unit of printing device, especially a kind of parallel port printing device standard port can the expansion and make the expanding unit with a plurality of standard interfaces.Belong to computing machine
Technical field.
Background technology:
Along with the development of USB interface technology, increasing PC equipment adopts USB interface, has become to connect approach between main frame and the peripheral hardware more fast and easily.And existing printing device mostly adopts the parallel port to be connected with the PC main frame, and the interface of printer generally only has the parallel port like this, does not have USB interface, and PC then possesses USB interface and driver mostly.
Printing device has USB interface simultaneously and parallel interface is necessary.
Summary of the invention:
The purpose of this utility model is to provide the standard port expanding unit of a kind of parallel port printing device, it can be arranged on the printing device of parallel port, have standard port and standard parallel port, printing device is had be compatible with the interface of various PCs, such expansion simultaneously also can be satisfied the common demand of using a printing device of a plurality of users.
The purpose of this utility model is achieved in that the standard port expanding unit of a kind of parallel port printing device, and it comprises at least: standard port, standard parallel port, standard port converting unit, multi-channel switch module, port are seized logic judgment unit, switch control unit; Wherein the standard port output terminal connects conversion unit input end, converting unit output termination multi-channel switch module input end; Standard parallel port output termination multi-channel switch module input end; The converting unit output terminal connects port in succession and seizes the logic judgment unit input end, and standard parallel port output termination port is seized the logic judgment unit input end; Logic judgment unit output termination switch control unit input end, switch control unit output termination multi-channel switch module control end; The standard parallel port of multi-channel switch module output termination parallel port printing device.
The utility model can comprise also that print job is finished and detect logical block and reseting logic unit; The standard parallel port output terminal that detects logical block input termination parallel port printing device is finished in print job, output termination reset unit input end, and reset unit output termination port status indicating member and port are seized the logic judgment unit input end.
Further, also comprise port status indication logical block, its input termination port is seized the standard parallel port output terminal of logic judgment unit output terminal and reset unit output terminal and parallel port printing device, output termination standard parallel port and standard port converting unit input end.
Further, also can comprise sequential compensation logic unit, obtain stable print data signal to guarantee printing device; Its input termination multi-channel switch module output terminal, the standard parallel port of output termination parallel port printing device.
Particularly, standard port can be more than one USB standard port; The standard parallel port can be more than one 1284 standard parallel ports.
According to the technique scheme analysis as can be known, the utlity model has following advantage:
Independence: do not need the parallel port printer is done any change, the outer circuits that this circuit can be used as the parallel port printer uses, and also can directly quote this circuit module in original design of control card for printer, just can realize the expansion of USB port.
Compatible: this circuit meets IEEE1284 parallel port agreement, supports standard parallel port SPP pattern and strengthens compatible parallel port ecp mode, can be suitable for present popular printer.
Extendability: this circuit not only can be used for the USB port expansion of parallel port printer.Expansion at IEEE1284 parallel port network printing server is suitable equally.
In sum, the utility model makes traditional parallel port printing device have a plurality of standard port and standard parallel port simultaneously, so that this printing device is compatible with the interface of various PCs, so in addition expansion also can be used for the common situation of using a printing device of two users, has reached existing resource is made full use of and convenient and practical effect.
Description of drawings:
Fig. 1 constitutes block diagram for the utility model circuit;
Fig. 2 is the utility model circuit theory diagrams;
Embodiment:
Below in conjunction with accompanying drawing the utility model is done detailed description further.
As shown in Figure 1 and Figure 2, when parallel port A or USB mouth B obtain print signal, they produce respectively/SLCTIN-A and/SLCTIN-B (U17 is converted to through signal conversion unit) signal.To these two signals and comprehensive judgment processing from the reset signal CLEAR of reseting logic unit, port is seized control signal X of logic judging circuit output by U1A, U1B, U2A, U2B.This signal is received the U7 of multi-way switch circuit, and this signal is received the U8 of multi-way switch circuit after not gate is negated simultaneously, thus the conducting of control U7 and U11B or U8 and U11A (being parallel port passage or USB mouth passage).Handle through the compensation of delay of sequential compensation logic unit U6, U9A, U10A, stable print data signal is sent to the parallel port printing device again.In case print out task is finished, printing device input print job is finished the printing operating state signal BUSY that detects logical block U12A inversion is taken place, and causes the U5C output reset signal CLEAR of the reseting logic unit that is attached thereto.
The port U2A, the U2B that seize logic judging circuit also exports asserts signal C in addition, D, port status indication logical block U13A, U9A, U4B by to this to signal with from the reset signal CLEAR of reseting logic unit U5C and logical process from the printing operating state signal BUSY of printing device, the output parallel port prints run signal BUSY A or the USB mouth is printed run signal BUSY B in order to the indication port status.
Claims (10)
1, the standard port expanding unit of a kind of parallel port printing device, it is characterized in that comprising at least: standard port, standard parallel port, standard port converting unit, multi-channel switch module, port are seized logic judgment unit, switch control unit; Wherein the standard port output terminal connects conversion unit input end, converting unit output termination multi-channel switch module input end; Standard parallel port output termination multi-channel switch module input end; The converting unit output terminal connects port in succession and seizes the logic judgment unit input end, and standard parallel port output termination port is seized the logic judgment unit input end; Logic judgment unit output termination switch control unit input end, switch control unit output termination multi-channel switch module control end; The standard parallel port of multi-channel switch module output termination parallel port printing device.
2, the standard port expanding unit of parallel port according to claim 1 printing device is characterized in that: described standard port expanding unit comprises also that print job is finished and detects logical block and reseting logic unit; The standard parallel port output terminal that detects logical block input termination parallel port printing device is finished in print job, output termination reset unit input end, and reset unit output termination port status indicating member input end and port are seized the logic judgment unit input end.
3, the standard port expanding unit of parallel port according to claim 1 printing device, it is characterized in that: described standard port expanding unit also comprises port status indication logical block, its input termination port is seized the standard parallel port output terminal of logic judgment unit output terminal and reset unit output terminal and parallel port printing device, output termination standard parallel port and standard port converting unit output terminal.
4, the standard port expanding unit of parallel port according to claim 1 printing device, it is characterized in that: described standard port expanding unit also comprises sequential compensation logic unit, its input termination multi-channel switch module output terminal, the standard parallel port of output termination parallel port printing device.
5, the standard port expanding unit of parallel port according to claim 1 printing device, it is characterized in that: described standard port is more than one standard port.
6, the standard port expanding unit of parallel port printing device according to claim 1 or 5, it is characterized in that: described standard port is a USB port.
7, the standard port expanding unit of parallel port according to claim 1 printing device, it is characterized in that: described standard parallel port is more than one standard parallel port.
8, according to the standard port expanding unit of claim 1 or 7 described parallel port printing device, it is characterized in that: described standard parallel port is 1284 parallel ports.
9, the standard port expanding unit of parallel port according to claim 1 printing device, it is characterized in that: described parallel port printing device is the parallel port printing device.
10, the standard port expanding unit of parallel port according to claim 1 printing device, it is characterized in that: described parallel port printing device is a parallel port network printing server.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02208870 CN2552068Y (en) | 2002-04-04 | 2002-04-04 | Standard port expander for combined port printing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02208870 CN2552068Y (en) | 2002-04-04 | 2002-04-04 | Standard port expander for combined port printing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2552068Y true CN2552068Y (en) | 2003-05-21 |
Family
ID=33689436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02208870 Expired - Fee Related CN2552068Y (en) | 2002-04-04 | 2002-04-04 | Standard port expander for combined port printing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2552068Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100368979C (en) * | 2005-08-29 | 2008-02-13 | 海信集团有限公司 | Device for implementing POS machine parallel interface data receiving and output for printing and method for use thereof |
| CN107391058A (en) * | 2017-07-25 | 2017-11-24 | 上海慧银信息科技有限公司 | Parallel port monitoring device and print system |
-
2002
- 2002-04-04 CN CN 02208870 patent/CN2552068Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100368979C (en) * | 2005-08-29 | 2008-02-13 | 海信集团有限公司 | Device for implementing POS machine parallel interface data receiving and output for printing and method for use thereof |
| CN107391058A (en) * | 2017-07-25 | 2017-11-24 | 上海慧银信息科技有限公司 | Parallel port monitoring device and print system |
| CN107391058B (en) * | 2017-07-25 | 2023-09-12 | 上海慧银信息科技有限公司 | Parallel port monitoring device and printing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030521 Termination date: 20110404 |