KR19990041793A - LED display device of cable modem - Google Patents

Abstract

The present invention relates to a method of operating a modem, and more particularly, to an LED display device of a cable modem for displaying the operating state of the cable modem with a colored LED and a single color LED. The LED display device of the cable modem includes a first color LED, a second color LED, a third color LED, a first color LED, a second color LED, and a third color LED. The first multicolored LEDs indicate the power on state of the cable modem and the result of the initial diagnosis of hardware in which the modem is installed. The second multicolor LED indicates the data reception status of the cable modem and the scan / lock status to find a channel suitable for data communication. The third colored LEDs indicate the data transmission state of the cable modem and the communication initialization state required for normal operation. The first monochrome LED indicates the service authentication status of the cable modem. The second monochrome LED indicates the load state of the upstream channel for the cable modem to transmit the packet. Preferably, the third monochromatic LED includes for indicating a message reception status of the cable modem. According to the present invention, the diagnostic status of the cable modem and the various transmission and reception operation status of the modem can be easily known, so that it is easy to diagnose during initial production, installation and troubleshooting, and the service authentication status, uplink load status, and message reception status It is easy to use and diagnose the cable modem.

Description

LED display device of cable modem

The present invention relates to a method of operating a modem, and more particularly, LED display device of the cable modem for displaying the operation state of the cable modem in a color LED (light emitting diode: Light Emitting Diode, hereinafter referred to as LED) and a single color LED It is about.

Modem (Modulation DEModulation) has a monochromatic power supply (PWR) LED to indicate the on / off status of the power supply, a monochromatic transmit (Tx) LED that flashes when sending data, and a monochromatic receive (Rx) LED that blinks when receiving data. It consists of. Among the three monochromatic LEDs in the modem, the power LED is turned on when the power is turned on, and is turned off when the power is not turned on. The transmit LED is on when the modem is transmitting data, and off when the modem is not transmitting data. The receive LED is on when the modem is receiving data, and off when the modem is not receiving data.

Conventional LEDs have no means for displaying diagnostics of the modem's internal hardware. In order for the modem to operate normally, the downlink channel scan (Scan, hereinafter referred to as Scan) and downlink frequency lock (Lock) (Hereinafter referred to as lock) and various communication steps such as registration and authentication of use of the modem from the headend system are required, but there is no way to know the progress of each step through the LED externally on the modem. In addition, there is no means of knowing the service authentication status and upstream load status, which are important for evaluating modem operation, and receive messages such as e-mail messages and service requests from the headend connected to the modem. In this case, it is inconvenient because there is no way to check the message reception status when the computer is turned off or the application is not running.

The technical problem to be achieved by the present invention is to provide an LED display device of the cable modem for displaying the operation state of the cable modem with a color LED and a single color LED.

1 is a flow chart showing the configuration of the LED display device of the cable modem according to the present invention.

2A to 2C are flowcharts illustrating a method of operating the apparatus shown in FIG. 1.

An LED display device of a cable modem of a cable modem for solving the technical problem to be achieved by the present invention is a device for displaying the state of the cable modem using the LED, the power-on state of the cable modem and the hardware initial installed A first colored LED for displaying a diagnostic result; When the state where the power is supplied to the cable modem and the hardware initial diagnosis is completed through the first colored LEDs, respectively, indicating a scan / lock state for searching for a channel suitable for data communication and data reception of the cable modem. A second color LED for; A third for indicating a data transmission state of the cable modem and a communication initialization state required for normal operation when the state of finding the data reception state of the cable modem and the channel suitable for data communication is displayed through the second colored LEDs, respectively; Bicolor LED; A first monochromatic LED for indicating a service authentication state of the cable modem when the data transmission state and the initial communication state of the cable modem are respectively displayed through the third colored LEDs; A second monochrome LED for indicating a load status of an uplink channel for the cable modem to transmit a packet when the service authentication status is displayed through the first monochrome LED; When the load of the upstream channel is displayed in a predetermined state through the second monochromatic LED, it is preferable to include a third monochromatic LED for indicating a message reception state of the cable modem.

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

1 is a flow chart showing the configuration of the LED display device of the cable modem according to the present invention.

The configuration of the device shown in Fig. 1 is a power LED (100) for displaying the power-on state of the cable modem and the hardware initial diagnosis result of the modem installed, SCAN / LOCK to find a channel suitable for data reception state and data communication of the cable modem Receive LED to indicate the status (Receive hereinafter referred to as RECV) LED 110, Transmit (hereinafter referred to as TRAN) LED to indicate the data transmission state of the cable modem and the communication initialization state required for normal operation 120, service authorization LED (Service Authorization, SERVICE) for displaying the service authentication status of the cable modem 130, busy for indicating the load status of the uplink channel for the cable modem to transmit packets (Busy, hereinafter referred to as BUSY) LED 140, a message for displaying the message reception status of the cable modem (hereinafter referred to as MSG) LED 150 . In the present invention, the PWR LED 100 is composed of a red (denoted RED or less RED) LED 101 for power indication, and a green (denoted GREEN or less GREEN) LED 102 for hardware diagnostic display. In addition, the RECV LED 110 includes a RED LED 111 indicating data reception and a GREEN LED 112 indicating a SCAN / LOCK state of finding a channel. The TRAN LED 120 is composed of a RED LED 121 for indicating data transmission and a GREEN LED 122 for indicating a communication initialization state.

2A to 2C are flowcharts illustrating a method of operating the apparatus shown in FIG. 1.

2A to 2C are flowcharts of determining whether power is supplied to the cable modem (200), turning off all PWR LEDs (201), determining whether the hardware diagnostic mode is in operation (202), and PWR LEDs. Diagnosing the hardware while the RED LED is on (203), determining whether an error has occurred during hardware diagnosis (204), correcting the error (205), determining whether the hardware diagnosis is completed (206) ), The step of maintaining the GREEN LED of the PWR LED on (207), the step of determining whether to obtain a lock by finding a channel suitable for data communication from the headend (208), the GREEN LED of the RECV LED on / off for 2 seconds Blinking in an off cycle (209), GREEN LED of the RECV LED to maintain the on state (210), determining whether the cable modem is receiving data (211), RED LED of the RECV LED is on for 2 seconds Flashing on / off cycle 212 In operation 213, a GREEN LED of the TRAN LED blinks in an on / off cycle for 2 seconds, and the GREEN LED of the TRAN LED is turned on. Maintaining state (215), determining whether the cable modem is transmitting data (216), the RED LED of the TRAN LED flashes in an on / off period of 2 seconds (217), the service requested by the cable modem Determining whether the grade is certified from the headend (218), the RED LED of the SERV flashes in the on / off cycle for 2 seconds (219), the RED LED of the SERV remains on (220), upward Determining whether the load of the channel is in an appropriate state (221), maintaining the RED LED of the BUSY in the off state (222), determining whether the load of the upstream channel is in a burden state (223), RED LED of the BUSY Flashes in an on / off period of 2 seconds (224), Determining whether the load is heavy (225), keeping the RED LED of BUSY on (226), determining whether the cable modem has received a message from the headend (227), yellow (YELLOW) In the following, the LED 150 remains in an OFF state 228, and the yellow (in YELLOW or less YELLOW) LED 150 of the MSG is in an ON state 229.

Next, the present invention will be described in detail with reference to FIGS. 1 and 2A to 2C.

In the present invention, the PWR LED 100 is a colored LED indicating the power-on state of the modem and the hardware initial diagnosis result in which the modem is installed, and determines whether power is supplied to the cable modem to check the state (step 200). If power is not supplied to the cable modem, all of the PWR LEDs 100 are turned off (step 201). When power is supplied to the cable modem, it is determined whether the hardware diagnostic mode is in operation (step 202). The diagnosis of the hardware may be a program by diagnostics to find a computer error. In the hardware diagnostic mode, the RED LED 101 of the PWR LED 100 maintains an on state to diagnose hardware (step 203). In operation 204, it is determined whether an error has occurred in hardware diagnosis. If an error occurs during the hardware diagnosis, the error is corrected (step 205). If no error occurs during the hardware diagnosis, it is determined whether the hardware diagnosis is completed (step 206). If the hardware diagnostics are not completed, the RED LED 101 of the PWR LEDs 100 remains on to diagnose the hardware. When the hardware diagnosis is completed, the GREEN LED 102 of the PWR LEDs 100 remains on (step 207). As a result, when power is supplied to the cable modem and hardware diagnosis is completed, both the PWR LED 100 and the GREEN LED 102 of the PWR LED 100 operate.

RECV LED 110 is a colored LED to indicate the data reception status of the cable modem and the SCAN / LOCK status to find a channel suitable for data communication. The RECV LED 110 searches for a channel suitable for data communication from the headend to find out the status. It is determined whether the lock has been obtained (step 208). When the cable modem is initialized, it scans the down channel from the headend in order, finds a channel suitable for data communication, and then locks its frequency to the corresponding frequency. Unless this process is successful, the communication of the cable modem is impossible and subsequent operation becomes meaningless, so it is very helpful for the user to easily know through the LED whether the process is completed. In this case, the headend is a device for controlling signal exchange between stations in a broadband network, and connects the stations by using the wideband unidirectional signaling characteristic. All stations transmit on one path on the inbound side and the signals received on the headend propagate along the second data path from the outbound. In other words, the headend may be a communication broker. When a channel suitable for data communication is not found from the headend and a lock is not obtained, the GREEN LED 112 of the RECV LEDs 110 blinks in an on / off period for 2 seconds (step 209). The GREEN LED 112 blinks at regular intervals until it finds a channel suitable for data communication and obtains a lock. If a lock is obtained by finding a channel suitable for data communication from the headend, the GREEN LED 112 of the RECV LEDs 110 remains on (step 210). After determining a channel suitable for communication and obtaining a lock, it is determined whether the cable modem is receiving data through the headend (step 211). When the cable modem is receiving data through the headend, the RED LED 111 of the RECV LEDs 110 blinks in an on / off period for 2 seconds (step 212). Eventually, the RECV LED 110 is an LED that operates after the PWR LED 100 is operated to find a channel suitable for data communication to obtain a lock, and when the data is received, both the RED LED 111 and the GREEN LED 112 operate. Done.

The TRAN LED 120 is a multi-color LED indicating the data transmission state of the cable modem and the communication initialization state required for normal operation. The TRAN LED 120 determines whether a setting value necessary for the operation of the cable modem has been allocated from the headend to determine the state thereof ( Step 213). TRAN LED (120) Internet protocol required for the operation of the cable modem after searching for the desired down channel through the SCAN / LOCK process to indicate whether all the necessary settings for the operation of the cable modem have been allocated from the headend. Protocol, hereinafter referred to as IP), a lot of data communication process is required in order to receive the contents of the address uplink channel information from the headend. If the setting value required for the operation of the cable modem is not allocated from the headend, the GREEN LED 122 of the TRAN LEDs 120 blinks in an on / off period of 2 seconds (step 214). The GREEN LED 122 blinks at regular intervals until a setting value required for the operation of the cable modem is allocated from the headend. When the setting value required for the operation of the cable modem is allocated from the headend, the GREEN LED 122 of the TRAN LEDs 120 remains on (step 215). After assigning setting values necessary for the operation of the cable modem from the headend, it is determined whether the cable modem is transmitting data through the headend (step 216). When the cable modem is transmitting data through the headend, the RED LED 121 of the TRAN LEDs 120 blinks in an on / off period for 2 seconds (step 217). Eventually, the TRAN LED 120 is an LED that operates after the PWR LED 100 and the RECV LED 110 are operated. When the TRAN LED 120 is assigned with a setting value necessary for the operation of the cable modem, the RED LED 121 is transmitted. The GREEN LEDs 122 are all operated.

The SERV LED 130 is a monochromatic LED for indicating the service authentication status of the cable modem, and determines whether the service level requested by the cable modem has been authenticated from the headend to check its operation (step 218). The SERV LED 130 requests the headend to register a Class of Service (COS) to be serviced by the cable modem after the cable modem is assigned various setting values necessary for data communication through the corresponding procedure. After authentication of the service, normal service function is started. If the service level requested by the cable modem is not authenticated from the headend, the RED LED, which is the SERV LED 130, blinks in an on / off period of 2 seconds (step 219). The SERV LED 130 is a monochromatic LED, and the RED LED blinks at regular intervals until the service level required by the cable modem is authenticated from the headend. If the service class required by the cable modem is authenticated from the headend, the RED LED, which is the SERV LED 130, remains on (step 220). As a result, the SERV LED 130 operates when the PWR LED 100, the RECV LED 110, and the TRAN LED 120 are operated, and the service level is authenticated from the headend.

The BUSY LED 140 is a monochromatic LED for indicating a load state of an uplink channel for transmitting a packet by the cable modem, and the cable modem transmits a packet according to the load state of the uplink channel. In order to determine the state of the BUSY LED 140, it is determined whether the load of the uplink channel is in an appropriate state (step 221). If the load on the upstream channel is appropriate, the cable modem can send packets normally when the load on the channel is below 80% of the allocated capacity. When the load of the upstream channel is in an appropriate state, the RED LED, which is the BUSY LED 140, is maintained in an off state (step 222). If the load of the uplink channel is not a proper state, it is determined whether the load of the uplink channel is a burden state (step 223). If the load on the upstream channel is a burden, the cable modem can transmit the packet when the load on the channel becomes more than 80% of the allocated capacity. When the load of the uplink channel is in a burden state, the RED LED of the BUSY LED 140 blinks in an on / off cycle for 2 seconds (step 224). If the load of the uplink channel is not a burden state, it is determined whether the load of the uplink channel is heavy (step 225). If the load on the upstream channel is heavy, the cable modem cannot transmit packets with the load on the channel exceeding 100% of the allocated capacity. If the load of the upstream channel is a heavy load of the uplink channel, the RED LED, which is the BUSY LED 140, is maintained in the on state (step 226). If the load on the uplink channel is in a heavy or heavy state, it is difficult to transmit a packet. Therefore, the RED LED state is maintained until the load on the uplink channel is appropriate. As a result, the BUSY LED 140 is turned off when the load of the upstream channel is appropriate after the PWR LED 100, the RECV LED 110, the TRAN LED 120, and the SERV LED 130 are operated.

The MSG LED 150 is a monochromatic LED for indicating the message reception status of the cable modem. The cable modem receives a message from the headend after the upstream load becomes appropriate and the RED LED, which is the BUSY LED 140, is turned off. It is determined (step 227). Messages received by the cable modem from the headend include e-mail messages, service requests, or rings of IP phones. If the cable modem has not received a message from the headend, the YGLOW LED, which is the MSG LED 150, remains off (step 228). When the cable modem receives the message from the headend, the YELLOW LED, which is the LED 150 of the MSG, remains on (step 229).

The LED display of the cable modem described so far is briefly described in Table 1.

Classification LED Usage Kinds Display method RED GREEN YELLOW PWR Power and diagnostics Color ON during diagnostic operation ON when diagnosis completed × RECV Receive data and display SCAN / LOCK status Color Flashes when receiving data Blinking during SCAN ON when LOCK × TRAN Data transmission and initialization status display Color Flashes when sending data × × SERV Service authentication status indication Monochromatic Blinks during service authentication.On when service authentication is complete. × × BUSY Load status indication of up channel Monochromatic Steady state OFF Burden state Blinking Overload state ON × × MSG Message reception status indication Monochromatic × × ON when receiving a message

As described above, according to the present invention, the diagnosis state of the cable modem and the various transmission and reception operation states of the modem can be easily understood, so that the diagnosis is easy at the time of initial mass production, installation, and troubleshooting. By displaying the message reception status, it is easy to use and diagnose the cable modem.

Claims (7)

In a device for indicating the status of the cable modem by using the LED, A first colored LED for displaying a power-on state of the cable modem and an initial diagnosis result of hardware in which the modem is installed; When the cable modem is powered on and the hardware initial diagnosis is completed through the first colored LEDs, the data reception state of the cable modem and the scan / lock state for finding a channel suitable for data communication are displayed. A second colored LED to make; A third for indicating a data transmission state of the cable modem and a communication initialization state required for normal operation when the state of finding the data reception state of the cable modem and the channel suitable for data communication is displayed through the second colored LEDs, respectively; Bicolor LED; A first monochromatic LED for indicating a service authentication state of the cable modem when the data transmission state and the initial communication state of the cable modem are respectively displayed through the third colored LEDs; A second monochrome LED for indicating a load status of an uplink channel for the cable modem to transmit a packet when the service authentication status is displayed through the first monochrome LED; And a third monochrome LED for indicating a message reception state of the cable modem when the load of the upstream channel is displayed in a predetermined state through the second monochrome LED. The method of claim 1, wherein the first colored LEDs When the cable modem is installed in the diagnostic operation of the hardware, the LED of the first predetermined color is turned on, and when the hardware diagnostic operation is completed, the LED of the second predetermined color is turned on. LED display. The method of claim 1, wherein the second color LED is The first predetermined color LED blinks when the cable modem is in a data receiving state, and when scanning to find a channel suitable for data communication, the second predetermined color LED blinks and a channel suitable for data communication is found. And the LED of the second predetermined color is turned on. The method of claim 1, wherein the third color LED is When the cable modem is in the data transmission state, the LED of the first predetermined color blinks, and when the communication state required for the normal operation of the cable modem is initializing, the LED of the second predetermined color blinks, and the cable modem operates normally. And when the initialization of the required communication state is completed, the LED of the second predetermined color is turned on. The method of claim 1, wherein the first monochromatic LED is When the cable modem has not received service authentication, the first predetermined color LED blinks, and when the cable modem has completed service authentication, the first predetermined LED is turned on. LED indicator. The method of claim 1, wherein the second monochrome LED is When the load state of the uplink channel for transmitting the packet by the cable modem is a predetermined value, the LED of the first predetermined color is turned off, and the load state of the uplink channel for transmitting the packet by the cable modem is determined by the predetermined state. When the LED of the first predetermined color blinks when the value is exceeded, and the load state of the uplink channel for the cable modem to transmit a packet is more than twice the predetermined value, the LED of the first predetermined color is turned on. LED display device of the cable modem, characterized in that. The method of claim 1, wherein the third monochromatic LED is The first predetermined color LED is turned on when a message is received by the cable modem, and the first predetermined color LED is turned off when a message is not received by the cable modem. Device.