Abstract: A wireless transceiver device employing the code select code division multiple access method includes an encoder configured to execute error correction coding on data having a predetermined number of bits among data inputted from outside, and a code selector configured to select a code corresponding to the data subjected to correction coding. The wireless transceiver device performs wireless communication by use of the data inputted from the outside excluding the data having the predetermined number of bits and by use of the code.

Abstract: A wireless transceiver device employing the code select code division multiple access method includes an encoder configured to execute error correction coding on data having a predetermined number of bits among data inputted from outside, and a code selector configured to select a code corresponding to the data subjected to correction coding. The wireless transceiver device performs wireless communication by use of the data inputted from the outside excluding the data having the predetermined number of bits and by use of the code.

Abstract: A wireless transceiver device employing the code select code division multiple access method includes an encoder configured to execute error correction coding on data having a predetermined number of bits among data inputted from outside, and a code selector configured to select a code corresponding to the data subjected to correction coding. The wireless transceiver device performs wireless communication by use of the data inputted from the outside excluding the data having the predetermined number of bits and by use of the code.

Abstract: Multi-carrier transmission system comprises transmitter including acquisition unit configured to acquire 2m (m: a natural number) modulated signals including no-information signals which are failed to be used for information transmission and 2n (n: a natural number, n<m) signals, acquisition unit subjecting modulated signals to inverse discrete Fourier trans-form to obtain transformed signals, no-information signal included in Lth modulated signal of modulated signals being used as first no-information signal of no-information signals, every Kth modulated signal of modulated signals that is counted from first no-information signal being used as no-information signal (K: a natural number, L: an integer, K=2m?n, 0?L?K?1), and transmission unit configured to transmit transformed signals, and receiver including receiving unit configured to receive the transformed signals, and detection unit configured to detect synchronization timing based on at least one no-information signal included in the transformed signa

Abstract: A wireless transceiver device employing the code select code division multiple access method includes an encoder configured to execute error correction coding on data having a predetermined number of bits among data inputted from outside, and a code selector configured to select a code corresponding to the data subjected to correction coding. The wireless transceiver device performs wireless communication by use of the data inputted from the outside excluding the data having the predetermined number of bits and by use of the code.

Abstract: Multi-carrier transmission system comprises transmitter including acquisition unit configured to acquire 2m (m: a natural number) modulated signals including no-information signals which are failed to be used for information transmission and 2n (n: a natural number, n<m) signals, acquisition unit subjecting modulated signals to inverse discrete Fourier transform to obtain transformed signals, no-information signal included in Lth modulated signal of modulated signals being used as first no-information signal of no-information signals, every Kth modulated signal of modulated signals that is counted from first no-information signal being used as no-information signal (K: a natural number, L: an integer, K=2m?n, 0?L?K?1), and transmission unit configured to transmit transformed signals, and receiver including receiving unit configured to receive the transformed signals, and detection unit configured to detect synchronization timing based on at least one no-information signal included in the transformed signal

Abstract: A multiplexing unit on the transmitting side estimates information amounts supplied from respective signal processing units, determines a multiplex code on the basis of respective information amounts, derives a parity of the first determined multiplex code to form a second multiplex code, adds a CRC to each of the multiplex codes to generate two headers H1 and H2, takes out information data of respective media according to the multiplex codes, incorporates the information data into a packet together with the two headers H1 and H2, and outputs the packet. If error correction of H1 is impossible on the receiving side, error correction decoding is conducted by using the header H2. If error correction of H2 is also impossible, error correction decoding is conducted collectively for H1 and H2.

Abstract: Multi-carrier transmission system comprises transmitter including acquisition unit configured to acquire 2m (m: a natural number) modulated signals including no-information signals which are failed to be used for information transmission and 2n (n: a natural number, n<m) signals, acquisition unit subjecting modulated signals to inverse discrete Fourier transform to obtain transformed signals, no-information signal included in Lth modulated signal of modulated signals being used as first no-information signal of no-information signals, every Kth modulated signal of modulated signals that is counted from first no-information signal being used as no-information signal (K: a natural number, L: an integer, K=2m-n, 0?L?K-1), and transmission unit configured to transmit transformed signals, and receiver including receiving unit configured to receive the transformed signals, and detection unit configured to detect synchronization timing based on at least one no-information signal included in the transformed signal

Abstract: A multiplexing unit on the transmitting side estimates information amounts supplied from respective signal processing units, determines a multiplex code on the basis of respective information amounts, derives a parity of the first determined multiplex code to form a second multiplex code, adds a CRC to each of the multiplex codes to generate two headers H1 and H2, takes out information data of respective media according to the multiplex codes, incorporates the information data into a packet together with the two headers H1 and H2, and outputs the packet. If error correction of H1 is impossible on the receiving side, error correction decoding is conducted by using the header H2. If error correction of H2 is also impossible, error correction decoding is conducted collectively for H1 and H2.

Abstract: In a transmission-side data transmission apparatus, a first information component of information data, necessary for real-time reproduction, is transmitted at a first transmission rate that is always secured on a communication channel. The other second information component of the information data, which is necessary for lossless reproduction but not for real-time reproduction, is intermittently transmitted at a second transmission rate that is irregularly secured on the communication channel. On the other hand, in a receiving-side data transmission apparatus, first encoded data that has been transmitted at the first transmission rate is decoded and reproduced in real time. Second encoded data that has been intermittently transmitted at the second transmission rate is decoded and synthesized with the real-time information component, whereby reception information data corresponding to the transmission information data is losslessly reproduced.

Abstract: A multiplexing unit on the transmitting side estimates information amounts supplied from respective signal processing units, determines a multiplex code on the basis of respective information amounts, derives a parity of the first determined multiplex code to form a second multiplex code, adds a CRC to each of the multiplex codes to generate two headers H1 and H2, takes out information data of respective media according to the multiplex codes, incorporates the information data into a packet together with the two headers H1 and H2, and outputs the packet. If error correction of H1 is impossible on the receiving side, error correction decoding is conducted by using the header H2. If error correction of H2 is also impossible, error correction decoding is conducted collectively for H1 and H2.

Abstract: A multiplexing unit on the transmitting side estimates information amounts supplied from respective signal processing units, determines a multiplex code on the basis of respective information amounts, derives a parity of the first determined multiplex code to form a second multiplex code, adds a CRC to each of the multiplex codes to generate two headers H1 and H2, takes out information data of respective media according to the multiplex codes, incorporates the information data into a packet together with the two headers H1 and H2, and outputs the packet. If error correction of H1 is impossible on the receiving side, error correction decoding is conducted by using the header H2. If error correction of H2 is also impossible, error correction decoding is conducted collectively for H1 and H2.

Abstract: A multiplexing unit on the transmitting side estimates information amounts supplied from respective signal processing units, determines a multiplex code on the basis of respective information amounts, derives a parity of the first determined multiplex code to form a second multiplex code, adds a CRC to each of the multiplex codes to generate two headers H1 and H2, takes out information data of respective media according to the multiplex codes, incorporates the information data into a packet together with the two headers H1 and H2, and outputs the packet. If error correction of H1 is impossible on the receiving side, error correction decoding is conducted by using the header H2. If error correction of H2 is also impossible, error correction decoding is conducted collectively for H1 and H2.

Abstract: A television camera 12 for picking up a subject and producing an video signal, a plurality of microphones 11L, 11R which are arranged so as to be separate from each other and which collect a vocal sound from the subject filmed by the television camera and output audio signals, an estimating circuit 13 for estimating the position of the sound source on the basis of the audio signals obtained from those microphones, and a coding circuit for encoding the video signal for a specific range of picture area centered the sound source position estimated by the estimating circuit with a larger amount of codes than the video signals for the other picture areas so that the picture area for the specific range may have a higher resolution than the other picture areas construct.

Abstract: Since a transmission route is set in accordance with the number of relaying broad band switching nodes present between two terminating nodes of a plurality of broad band switching nodes, a through-put characteristic, an affecting degree due to occurrence of a defect, the traffic of the entire network is distributed. In addition, when the system is started up, transmission routes with a minimum band width necessary for routing control have been set in all the broad band switching nodes. Whenever a call takes place, a transmission route is set and the band width is variably set by using an intelligent inference mechanism. Moreover, an intelligent distributed control for distributing such an intelligent inference mechanism in the broad band switching nodes is used. Thus, the load of processing a call can be decreased, while the reliability of the network and the improvement of the operating efficiency can be achieved.