Electronics and Telecommunications Research Institute

Myung Hee Son

Jong-Hyun Park

Young Sun Kim

Do Hyun Kim

Byung Tae Jang

Kyeong Tae Kim

Kyung Bok Sung

Jeong-Dan Choi

Jae Han Lim

Jae Jun Yoo

Mi-Jeong Kim

Jung Sook Kim

Jong Hyup Lee

Provided are an intelligent parking guidance apparatus and method. The intelligent parking guidance apparatus includes: an image sensor node recognizing a vehicle number of a vehicle, sensor nodes determining whether the vehicle exists in their own positions, a parking management server generating information for guiding the vehicle to an available parking space, and a mobile communication terminal receiving the information. The intelligent parking guidance apparatus and method provide information regarding parking lots which are within a predetermined distance from a destination and available parking spaces of each parking lot, to a driver, as well as provide a road guidance service to the driver to guide his/her vehicle to the destination, so that the driver can select an optimal parking lot. Also, when the vehicle enters the parking lot, the intelligent parking guidance apparatus and method guide the driver to an available empty parking space, thereby reducing difficulties in finding a parking space in a place which is unfamiliar to the driver.

Intelligent parking guidance apparatus and method

The present invention provides a method of managing forwarding tables of network processors based on address learning in a line card. In this method, a demultiplexing module transmits N Ethernet data frames having the same source address to ports of network processors in sequence. Each of the network processors adds an entry to its address learning table and transmits the received Ethernet data frame to the main processor. The main processor determines whether an entry corresponding to the Ethernet data frame exists in its forwarding table. If the entry exists and the learning process count (LRNG_CNT) flag value is greater than zero, the main processor increases the LRNG_CNT flag value by one. If the entry does not exist, the main processor adds the entry to its forwarding table, increases the LRNG_CNT flag value, and requests creation of the entry in forwarding tables from the network processors.

Method of managing forwarding tables of network processors based on address learning in line card

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Daejeon, South Korea

Myung Hee Son