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A printer is provided which has a special Emulation Manager function as well as a "code sniffer" function, in which print data received is sent to a code sniffer buffer. A code sniffer function automatically determines the type of emulator that should be called to perform the interpretation or rende

A printer is provided which has a special Emulation Manager function as well as a "code sniffer" function, in which print data received is sent to a code sniffer buffer. A code sniffer function automatically determines the type of emulator that should be called to perform the interpretation or rendering of this print job, and if the code sniffer determines that the correct emulator is PostScript, then the code sniffer scans the data for any "special tokens." If a special token is found, the PostScript emulator determines if the special token string data is part of a PostScript comment. If it is in the correct format, then the PostScript emulator sets the "mode flag" to the "MacBinary" state, and the code sniffer ceases any further filtering of control characters and disables any change of emulator command that may be received during this print job. The rest of the print job is then interpreted as RAW binary data by the PostScript emulator, until a "UEL" string is encountered.

대표청구항 ▼

A printer is provided which has a special Emulation Manager function as well as a "code sniffer" function, in which print data received is sent to a code sniffer buffer. A code sniffer function automatically determines the type of emulator that should be called to perform the interpretation or rende

A printer is provided which has a special Emulation Manager function as well as a "code sniffer" function, in which print data received is sent to a code sniffer buffer. A code sniffer function automatically determines the type of emulator that should be called to perform the interpretation or rendering of this print job, and if the code sniffer determines that the correct emulator is PostScript, then the code sniffer scans the data for any "special tokens." If a special token is found, the PostScript emulator determines if the special token string data is part of a PostScript comment. If it is in the correct format, then the PostScript emulator sets the "mode flag" to the "MacBinary" state, and the code sniffer ceases any further filtering of control characters and disables any change of emulator command that may be received during this print job. The rest of the print job is then interpreted as RAW binary data by the PostScript emulator, until a "UEL" string is encountered. a communication channel between the first and second server. 6. The network of claim 1 further comprising: a) at least one first server connected to the at least one first LAN; and b) at least one second server connected to the at least one second LAN for communication through the first and second routers with the at least one first server; wherein each of the first and second servers respectively comprises: a host processor; at least one multicast capable network interface interconnected between the host processor and a respective LAN; and a host memory connected to the host processor. 7. The network of claim 1 further comprising: a) at least one first server connected to the at least one first LAN; and b) at least one second server connected to the at least one second LAN for communication through the first and second routers with the at least one first server; wherein each of the first and second servers respectively comprises: a host processor; at least one multicast capable network interface interconnected between the host processor and a respective LAN; and a host memory connected to the host processor, the host memory being apportioned between at least a server ring database, a server state register, and a server event register. 8. The network of claim 1 wherein the at least one link is one of a communications network or a wide area network (WAN). 9. The network of claim 1 wherein the Totem network is interconnected with a distributed network. 10. The network of claim 1 further comprising means for transmitting totally ordered messages between the at least one first Totem ring and the at least one second Totem ring. 11. The network of claim 1 wherein the first Totem router is configured to distribute multicast messages between at least one first Totem ring and the at least one second Totem ring. 12. The network of claim 1 wherein the first router and second router further comprise complementary computer program code executable for joining the first router to the second router. 13. The network of claim 1 wherein the first router and the second router further comprise complementary computer programs executable for joining the first router to the second router, each of which computer programs respectively comprises: a) computer program code for entering the first router into a router-initialization state; b) computer program code for determining when the first router has been initialized; c) computer program code for entering the first router into a router-waiting-for-ring-ready state upon a determination that the first router has been initialized; d) computer program code for determining when the first router has received a ring-ready signal; e) computer program code for entering the router into a router-waiting-for-remote-router-info state upon a determination that the router has received a ring-ready signal; f) computer program code for determining when the router has received remote-router-information; and g) computer program code for entering the router into a router-in-service state upon a determination that the router has received remote-router-information. 14. The network of claim 1 wherein the first router and the second router further comprise complementary computer programs executable for joining the at least one first router to the at least one second router, each of which computer programs respectively comprises: a) computer program code residing on the ordering layer of the first router for sending an enable-ring signal from the ordering layer of the first router to a Totem ring layer of the first router; b) computer program code residing on the first router for sending a connect message from the first router to the second router; c) computer program code residing on the Totem ring layer of the first router for sending, in response to receipt of the enable-ring signal, a ring-comes-up signal from the Totem ring layer of the first router to the ordering layer of fi rst router; d) computer program code residing on the second router for sending, in response to receipt of the connect message, a connect-ack-from-remote-router message from the second router to the first router; e) computer program code residing on the first router for sending a ring-up message from the first router to the second router; and f) computer program code for sending a remote-ring-up-from-remote-router message from the second router to the first router. 15. The network of claim 1 further comprising at least one server connected to the at least one first LAN, and through the at least one first LAN to the first router; and wherein the at least one server and the first router further comprise complementary computer program code executable for joining the at least one server to the first router. 16. The network of claim 1 further comprising at least one server connected to the at least one first LAN, and through the at least one first LAN to the first router; and wherein the at least one server and the first router further comprise complementary computer program code executable for joining the at least one server to the first router, each of which computer programs respectively comprises: a) computer program code for entering the at least one server into a server-initialization state; b) computer program code for determining when the server has been initialized; c) computer program code for entering the at least one server into a server-waiting-for-ring-ready state upon a determination that the at least one server has been initialized; d) computer program code for determining when the at least one server has received a ring-ready signal; e) computer program code for entering the at least one server into a server-waiting-for-router-ready state upon a determination that the at least one server has received a ring-ready signal; f) computer program code for determining when the at least one server has received a remote-router-ready message; and g) computer program code for entering the at least one server into a server-in-service state upon a determination that the at least one server has received a router-ready message. 17. The network of claim 1 further comprising at least one server connected to the at least one first LAN, and through the at least one first LAN to the first router; and wherein the at least one server and the first router further comprise complementary computer program code executable for joining the at least one server to the first router, each of which computer programs respectively comprises: a) computer program code residing on the at least one server for sending an enable-ring message from the at least one server to the first router; b) computer program code residing on the first router for sending, in response to receipt of the enable-ring message, a ring-comes-up message from the first router to the server; c) computer program code residing on the at least one server for sending a router-ready-request-from-ring message from the at least one server to the first router; and d) computer program code residing on the first router for sending, in response to receipt of the router-ready-request-from-ring message, a router-ready message from the second router to the first router. 18. A method for connecting a first Totem ring having at least one first local area network (LAN) to a second Totem ring having at least one second LAN, comprising the following steps: a) configuring a first router for serving the at least one first LAN; b) configuring a second router for serving the at least one second LAN; and c) linking the first router to the second router for establishing a channel of communication between the at least one first Totem ring and the at least one second Totem ring. 19. The method of claim 18 wherein the step of configuring a first router for serving the at least one first LAN further comprises connecting at least one multicast capable network interface between a ho