KR20020065004A - Optical transmission system - Google Patents

Abstract

PURPOSE: An optical transmitting system is provided to save a development cost and improve an after-service and system maintenance by downloading configuration data of a field programmable gate array to equipment installed in a remote place using an FTP(File Transfer Protocol) and using the downloaded configuration data. CONSTITUTION: An optical transmitting equipment(3) connects to an FTP server(1) through an Internet network(2). A DRAM(4), a flash memory(5), and an SPI(Serial Peripheral Interface transmit/receive process) successively connect to the optical transmitting equipment(3) through a temporal buffer(6) under the control of a microprocessor(11). The output of the SPI(7) is transmitted to field programmable gate arrays(8-10) for composing a corresponding field programmable gate array.

Description

Optical transmission system {OPTICAL TRANSMISSION SYSTEM}

The present invention relates to firmware remote download of optical transmission equipment, and more particularly, configuration data of various field programmable gate arrays used in optical transmission equipment (CONFIG URAION) is converted into a specific format and downloaded through a network from a remote location for optical transmission equipment The present invention relates to an optical transmission system capable of constructing a field programmable gate array.

Optical communication refers to the communication by optical fiber, using a semiconductor laser as a light source. The optical communication system for this purpose is a transmission method for sending information in the form of an optical signal, such as an intensity modulation communication method (light wave communication method) using light as energy and a coherent communication method using light as a wave. Low loss, wideband and inductive fiber optic cables or spaces are used as the medium.

For example, a small-capacity optical transmission device used in connection with a conventional T1 / E1 network through a V.35 / T1 / E1 interface as well as interworking with a conventional high-speed leased line network is, for example, from 56 Kbps to 1.54Mbps for T1 and 1.98Mbps for E1. It is a device that transmits and receives data and voice level T1 / E1 data at high speed and can connect with digital equipment such as ROUTER, CAD / CAM, computer and video codec. According to a method of synchronizing a transmitter and a receiver in the small-capacity optical transmission device, it is divided into synchronous transmission and asynchronous transmission.

The conventional method of constructing a field programmable gate array of an optical transmission device is applied inside the device by writing the configuration data of the field programmable gate array used in the optical transmission device to a PROM (PROGRAMMABLE READ ONLY MEMORY) through a ROM (READ ONLY MEMORY) writer. have. Here, the field programmable gate array is a kind of field programmable logic array, which has only an AND array of PROMs and no OR array. The field programmable logic array is a special device on the user side that meets each array of PLA (PROGRAMMABLE LOGIC ARRAY DEVICE). It can be selectively wired using.

As a result, the technician could solve the functional problem of the optical transmission equipment by replacing the PROM with a technician at the site where the optical transmission equipment is installed. Therefore, the conventional optical transmission system is followed by a number of difficulties in terms of after-sales service or system maintenance, and has come up with various methods to solve this problem.

The present invention has been invented in view of the above circumstances and the like, and configuration data of a field programmable gate array (that is, field programmable gate arrays available to all vendors) in equipment installed remotely using FTP (FILE TRANSFER PROTOCOL) Its purpose is to provide an optical transmission system, which is a remote download of firmware for optical transmission equipment that can reduce development costs, improve after-sales service and system maintenance.

1 is a block diagram showing a device for constructing an optical transmission system according to an embodiment of the present invention;

2 is an operation flowchart for explaining the device configuration using the optical transmission system of the present invention.

* Explanation of symbols for main parts of the drawings

1: FTP server 2: Internet network

3: optical transmission equipment 4: DRAM

5: Flash memory 6: Temporary buffer

7: SPI (SERIAL PERIPHERAL INTERFACE TRANSMIT / RECEIVE PROCESS)

8-10: Field Programmable Gate Array

11: microprocessor

In the optical transmission system of the present invention for achieving the above object, the FTP server 1 and the optical transmission equipment (3) is connected through the Internet network (2) which is a network, the optical transmission equipment (3) has a microprocessor (11) DRAM 4, flash memory 5, and SPI 7 are sequentially connected through a temporary buffer 6 under the control and control of the SPI, and the outputs of the SPI 7 are respectively field programmable gate arrays 8-10. It is characterized in that the field programmable gate array is configured by transmitting to).

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing an apparatus for constructing an optical transmission system according to an embodiment of the present invention. The present invention provides an FTP network (1) to download an internet network (2) by firmware remote download of the optical transmission equipment (3). Convert the configuration data of various field programmable gate arrays (8-10) used in the optical transmission equipment (3) to be connected through a specific format, and download them through the Internet network (2) from a remote place to download the field programmable gates of the optical transmission equipment. The array can be configured.

The FTP server 1 and the optical transmission device 3 are connected to each other through the Internet network 2, which is the network. The optical transmission device 3 includes a temporary buffer 6 under the control and control of the microprocessor 11. DRAM (4: DYNAMIC RANDOM ACCESS MEMORY), Flash memory (5) and SPI (7: SERIAL PERIPHERAL INTERFACE TRANSMIT / RECEIVE PROCESS) are sequentially connected through the card type and field programmable gate array Etc.) in consideration of the speed, pulse width, and holding time, the respective field programmable gate arrays are serially transmitted to the field programmable gate arrays 8-10 through the SPI 7 in order to configure the corresponding field programmable gate arrays.

In the field programmable gate arrays 8 to 10, 8 is an ALTERA field programmable gate array and V.35, 9 is a XILINX field programmable gate array and voice, and 10 is an ORCA field programmable gate array and optical. Can be represented. The S-RECORD format in the configuration data of the field programmable gate array indicates a hexadecimal file composed of a record length, an address, a code / data, and a CHECKSUM field structure. The temporary buffer 6 represents a ROM.

The optical transmission system of the present invention configured as described above will be described based on the flow chart shown in FIG. 2. First, the system is turned on through the command input under the power of the optical transmission equipment 3 or under the control and control of the microprocessor 11. Initialize In order to connect to the FTP server 1 via the Internet network 2, the Internet protocol and password of the optical transmission device 3 are inputted to the optical transmission device 3 and connected to the FTP server 1.

The configuration data of the field programmable gate array to be downloaded (S-record format) is specified, and the configuration data of the corresponding field programmable gate array is downloaded from the remote network through the Internet network 2. The downloaded data is stored in the temporary buffer 6 in units of specific blocks (512 bytes), and the data stored in the temporary buffer 6, that is, the S-recording format, is compressed (header, address and CRC are removed). After that, only data necessary for the actual field programmable gate array configuration is extracted) and stored in the DRAM 4.

The data of the specific file format stored in the DRAM 4 is copied to the flash memory 5 to maintain the data even when the power of the optical transmission device 3 is turned off. Therefore, considering the speed, pulse width, and holding time in accordance with the card type and the field programmable gate array characteristics, the respective field programmable gate arrays 8 through 10 are transferred to the field programmable gate arrays through the SPI 7 in serial. Is configured.

As described above, according to the present invention, the configuration data of the field programmable gate array can be downloaded and used to equipment installed remotely using FTP, thereby reducing development costs, improving after-sales service, and system maintenance. It is possible to provide an optical transmission system for firmware remote download of the optical transmission equipment.

The present invention described above is capable of various substitutions, modifications, and changes within the scope of the present invention to those skilled in the art without departing from the technical spirit of the present invention and the above-described embodiments and It is not limited to the accompanying drawings.

Claims (2)

The FTP server 1 and the optical transmission equipment 3 are connected through an internet network 2, which is a network. The optical transmission device 3 is sequentially connected to the DRAM 4, the flash memory 5 and the SPI 7 through the temporary buffer 6 under the control and control of the microprocessor 11, the SPI (7) The output of the optical transmission system, characterized in that each of the field programmable gate array (8-10) is transmitted to configure the field programmable gate array. The method of claim 1, The data stored in the temporary buffer 6 is obtained by compressing the S-recording format, i.e., removing the header, address and CRC, and extracting only data necessary for the actual field programmable gate array configuration and storing the data in the DRAM 4. An optical transmission system characterized by the above.