摘要:
A first initialization pattern signal is a signal in which a maximum signal level and a minimum signal level appear alternately, and a second initialization pattern signal is a signal in which all signal levels appear in a predetermined arrangement. In a ring-shaped network including plural stages of data transmission apparatuses (100), a transmission unit (110) of each data transmission apparatus outputs the first initialization pattern signal successively to a next-stage data transmission apparatus at turn-on of power or immediately after reset, and a reception unit (120) establishes clock synchronization on the basis of the first initialization pattern signal received. When synchronization is established in all of the data transmission apparatuses, the transmission unit (110) outputs the second initialization pattern signal successively to the next-stage data transmission apparatus, and the reception unit (120) sets evaluation levels for the respective signal levels on the basis of the received second initialization pattern signal, and transmission/reception of data is started when evaluation levels are set in all of the data transmission apparatuses.
摘要:
A ring-shaped network quickly performs initialization even when a plurality of data transmission apparatuses are connected thereto. Each data transmission apparatus outputs received data to a device connected thereto while performing establishment of clock synchronization based on the received data, and when synchronization is established, it resends the received data. Further, when synchronization of the connected device is established, it sends data supplied from the connected device. Further, a master data transmission apparatus outputs data at turn-on of power or immediately after reset, and a next-stage slave data transmission apparatus receives the data to establish synchronization, and resends the received data when synchronization is established. Thus, synchronization of all the data transmission apparatuses is established while making a round of this data, and then synchronization of devices connected to the respective data transmission apparatuses is established.
摘要:
A digital data transmission apparatus includes a transmitting end (100) that includes: a binary/quadrary conversion unit (110) for converting a data stream; a coding unit (120) for mapping the converted data to be coded; a digital filter (130); a D/A conversion unit (140); a low-pass filter (150) for eliminating a high-band signal; a differential driver (160) for inputting an analog signal that has passed through the low-pass filter into a twisted pair cable (300), and a receiving end (200) that includes: a low-pass filter (210) for eliminating noises from both wires of the twisted pair cable; a receiver (220) for receiving the signals that have passed through the low-pass filter; an A/D conversion unit (230); a digital filter (240); an evaluation unit (250) for evaluating a signal level of a received signal; a decoding unit (260) for decoding the signal level into receipt data; and a synchronization unit (270) for generating a clock.
摘要翻译:数字数据传输装置包括:发送端(100),包括:用于转换数据流的二进制/四次转换单元(110); 编码单元,用于映射所转换的要编码的数据; 数字滤波器(130); D / A转换单元(140); 用于消除高频带信号的低通滤波器(150); 用于将通过所述低通滤波器的模拟信号输入到双绞线电缆(300)中的差分驱动器(160)以及包括:用于消除噪声的低通滤波器(210)的接收端(200) 从双绞线的两根电线; 接收器(220),用于接收已经通过低通滤波器的信号; A / D转换单元(230); 数字滤波器(240); 评估单元(250),用于评估接收信号的信号电平; 解码单元,用于将信号电平解码为接收数据; 以及用于产生时钟的同步单元(270)。
摘要:
A digital data transmission apparatus includes a transmitting end (100) that includes: a binary/quadrary conversion unit (110) for converting a data stream; a coding unit (120) for mapping converted data to be coded; a digital filter (130); a D/A conversion unit (140); a low-pass filter (150) for attenuating noises which are caused by folding distortion; a differential driver (160); low-pass filters (170a) and (170b) for eliminating noises from differentially outputted signals; and a common mode choke coil (180) for eliminating common mode noises and outputting a resultant signal to a twisted pair cable (300), and a receiving end (200) that includes: a low-pass filter (210) for eliminating noises from the twisted pair cable; a receiver (220); an A/D conversion unit (230); a digital filter (240); an evaluation unit (250) for evaluating a signal level of a received signal; a decoding unit (260) for decoding the signal level into received data; and a synchronization unit (270) for generating a clock.
摘要翻译:数字数据传输装置包括:发送端(100),包括:用于转换数据流的二进制/四次转换单元(110); 编码单元(120),用于映射要编码的转换数据; 数字滤波器(130); D / A转换单元(140); 用于衰减由折叠失真引起的噪声的低通滤波器(150); 差速驱动器(160); 低通滤波器(170a)和(170b),用于消除差分输出信号的噪声; 以及用于消除共模噪声并将结果信号输出到双绞线电缆(300)的共模扼流线圈(180),以及接收端(200),包括:低通滤波器(210),用于消除噪声 双绞线; 接收器(220); A / D转换单元(230); 数字滤波器(240); 评估单元(250),用于评估接收信号的信号电平; 用于将信号电平解码为接收数据的解码单元(260); 以及用于产生时钟的同步单元(270)。
摘要:
An evaluation level setting method and a data reception apparatus in which the method is implemented accurately evaluate signal levels in multi-valued transmission for transmitting data while assigning one or more bits of data as one data symbol to a signal level.A data transmission apparatus outputs an initialization pattern signal at turn-on of power or after reset, and the data reception apparatus establishes clock synchronization on the basis of the received initialization pattern signal and starts data reception after setting of evaluation levels to be used for threshold evaluation of signal levels.
摘要:
A control device determines whether an image generated by merging several concurrently picked-up images has consistent image quality on a display device. If determined No, image quality parameters set in each image pickup device are so controlled as to make the image quality of the merged image consistent. Therefore, the merged image can assuredly have consistent image quality. Further, a signal processing device detects, based on positions of nodes and attributes of cameras, a connection indicating which node is connected to which camera and with what attribute. The signal processing device in advance stores every detectable connection and a plurality of image processing programs corresponding to each connection, and selects and carries out one of the image processing programs corresponding to the detected connection.
摘要:
A master station including at least a token packet (Iso) management table in which the overall band of the bus is partitioned into certain bands, rewrites the token packet (Iso) management table according to the bandwidth required in Isochronous data transmission between stations to at least control transmission of token packets (Iso) and dynamically control the bandwidth.
摘要:
A master station 11 produces a token packet for isochronous data in which a slave station 12 and slave stations 13 and 14 serving as a sending station and receiving stations are designated using IDs for isochronous data “#2” and “#3” in accordance with contents described in a table 161 held in its inner part so as to manage a transmission bandwidth using a token packet sending/analysis executing device 16, and sends out the produced token packet to a transition path 15 on the downstream side. The slave station 12 sends out an isochronous data packet 42 using the token packet for isochronous data 41. According to the token packet for isochronous data 41, the slave stations 13 and 14 are designated as receiving stations using the ID for isochronous data “#3”, so that the slave stations 13 and 14 perform the above-mentioned operations, to receive the isochronous data packet 42. The sending station can thus transmit the same isochronous data to a plurality of receiving stations belonging to a broadcast group, so that it is possible to establish multicast communication (communication to a plurality of nodes).
摘要:
The moving image encoding device for encoding a plurality of moving image signals of this invention includes: a plurality of encoding sections for encoding the plurality of moving image signals, the encoding sections being provided with a plurality of quantization sub-sections for quantizing the plurality of moving image signals with predetermined quantization widths; and a quantization control section for controlling the quantization widths used by the quantization sections simultaneously.
摘要:
An user interface apparatus that receives a user operation of an electrical device and notifies the electrical device of the instruction to execute an action according to the user operation predicts at least one action, the execution of which is supposed to be desired by the user, provides a user interface for having the user designate one action out of the at least one action, and receives a designation by the user. When receiving the user designation, the user interface apparatus notifies the electrical device of the instruction to execute the action that has been designated by the user.