Abstract:
PROBLEM TO BE SOLVED: To enhance a security effect by easily achieving unification of security policy. SOLUTION: An encryption control device 103 is provided which determines whether input data has been encrypted, and encrypts input data to supply it to an access point 102 of a wireless LAN when the input data has not been encrypted, and supplies the input data to the access point 102 without encrypting it when the input data has been encrypted, whereby data is always transmitted and received between the access point 102 and a wireless LAN terminal in a state of being encrypted in accordance with one encryption system to achieve unification of security policy of encryption communications between a plurality of terminals including the wireless LAN terminal. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a dial up router for mobile object packet communication which dial-connects fixed side LAN and a mobile side terminal in mobile object packet communication through a telecommunications provider. SOLUTION: The dial up router for mobile object packet communication is provided with a function for giving a connection request to a mobile radio device connected to the telecommunications provider by a radio signal from fixed side LAN which is connected with the telecommunications provider by a private line and constitute an peculiar network and selecting a network to which fixed side LAN emitting the connection request belongs from the identification code of a transmission source, which the telecommunications provider gives, a function selecting the arrival procedure of a packet signal peculiar to the telecommunications provider which is previously set, a function for selecting a procedure which dial-connects a system to fixed side LAN of the transmission source, which belongs to the selected network, in accordance with the selected arrival procedure and a function for connecting the terminal of fixed side LAN to the mobile side terminal. COPYRIGHT: (C)2003,JPO
Abstract:
PROBLEM TO BE SOLVED: To improve quality of an image to which an image effect is given by pixel value conversion processing using a correction factor. SOLUTION: Using correction value tables 2 -1 -2 -k having patterns varied according to the positional relationship of two pixels from which a difference value is calculated, a correction value is not decided simply according to the difference value but decided in compliance with both of the positional relationship between the pixels and the difference value between them, so that a proper correction value can be decided while selecting the positions of the pixels. In comparison with a conventional technology by which the correction value is simply changed for changing an emphasis degree, for example, quality of the image acquired by a pixel value conversion processing can be improved. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide communication equipment connectable to a plurality of communication lines and freely and properly using the communication lines according to purposes and uses, with a simple constitution. SOLUTION: The communication equipment includes: a plurality of interfaces 11a-11c provided for two or more kinds of communication lines, an A/D conversion part 12 for analog/digital converting analog information input from the interface parts 11a-11c, a DSP 31 for performing information processing to digital information output from the A/D conversion part 12, and an input switch part 14 for selecting one of the plurality of interface parts 11a-11c and supplying the analog information input from the selected interface part to the A/D conversion part 12. It is not required to provide two or more pieces of communication equipment nor the plurality of A/D conversion parts for the two or more kinds of communication lines. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a technology of utilizing the encryption of the VPN (Virtual Private Network) for the End-to-End model of IP phones so as to ensure the privacy and the security of speech. SOLUTION: A function of constructing VPN tunnels 200b, 200c and carrying out data communication and a function of applying encryption processing and decryption processing to data exchanged via the VPN tunnels 200b, 200c are provided to each of IP phones 101A -1 to 101A -m , and 101B -1 to 101B -n so as to construct not only a VPN tunnel 200a between VPN gateway apparatuses 102A, 102B installed on the way of an IP network 200 but also to construct the VPN tunnels 200b, 200c between VPN gateway apparatuses 102A, 102B and the IP phones 101A -1 to 101A -m , and 101B -1 to 101B -n thereby ensuring encryption communication. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To prevent double encryption so that communication over a network will not slow down. SOLUTION: A double encryption preventing device is provided with a decryption processing section 103a, which determines whether the data inputted from a sender's terminal is encrypted. When the inputted data are encrypted, the decryption processing section 103a decrypts the inputted data and supplies the data to VPN routers 102A and 102B. When the inputted data have not been encrypted, the decryption processing section 103a supplies the inputted data to the VPN routers 102A and 102B without decrypting the data. Whether the data is encrypted by the sender's terminal which transmits the data, the decryption processing section 103a always supplies unencrypted plain text data to the VPN routers 102A and 102B so that the data will not be doubly encrypted, even if encryption is performed by the VPN routers 102A and 102B. COPYRIGHT: (C)2007,JPO&INPIT