Abstract:
[Object] To provide a communication device that enables efficient monitoring of similar communication flows that are generated in a massive amount. [Solution] Provided is a communication device, including: a packet collection unit configured to collect packets transmitted to a network and packets received from the network; a packet detection unit configured to detect whether or not a packet that is an opportunity to generate instruction information for instructing start and stop of recording packets exists by using the packets collected by the packet collection unit; a control information generation unit configured to generate information for use in monitoring operation of packets and control information including the instruction information; and a communication control unit configured to transmit the control information generated by the control information generation unit to another device connected to the network.
Abstract:
An encoder in which a video signal is subjected to signal processing by a signal processing circuit and to motion compensation, differential data generated by the motion compensation is subjected to orthogonal transformation to generated coefficient data, encoded data is generated by quantizing the coefficient data, and the quantization step size for quantization is changed according to the amount of encoded data generated, the signal processing circuit being provided with moving vector detecting means for detecting a moving vector of the video signal, motion vector amount-of-codes measuring means for calculating the amount of codes of the moving vector based on the moving vector, coefficient data number-of-codes measuring means for measuring the amount of codes of the coefficient data, and number-of-pixels changing means for changing the number of pixels of the video signal according to the amount of codes of the moving vector and the amount of codes of the coefficient data.
Abstract:
A signal processing apparatus comprising a plurality of video signal correlation detecting means for detecting the values of video signal correlations in a plurality of ways with respect to the displayed picture, and intermediate value selecting means for selecting an intermediate value among the detected values of the plurality of video signal correlations, whereby a changing video signal is processed by utilizing a correlation of a proper way.
Abstract:
A video signal processing apparatus comprises a plurality of video signal correlation detecting means (H Corr, V Corr, F Corr) for detecting the values of video signal correlations of a video signal in a plurality of ways with respect to a picture displayed from the video signal, and intermediate value selecting means (12Y, 12C) for selecting an intermediate value from among the detected values of the plurality of video signal correlations, whereby a changing video signal is processed by utilising a correlation of a proper direction.
Abstract:
A digital code reader reads the digital key code in a scrambled video signal. The key code represents the scheme used to scramble the signal before broadcasting and is used by the video receiver to unscramble the received signal. To prevent misreading of the key code due to interference such as ghost signals, the reader uses a predetermined property established for the broadcast signal. The change in that property caused by interference in the received signal is determined and a control signal is generated from that determination. A threshold signal is used to reproduce the key code from the received signal by comparison of the levels of the received signal with the level of the threshold signal. The level of the threshold signal is set by the control signal, which depends on the change detected in the predetermined property of the broadcast signal. Thus the level of the threshold signal can be set to enable the reproduced digital information to match the broadcast digital information.
Abstract:
The present technology pertains to a synchronization processing device a synchronization processing method and a program which make it possible to achieve frequency synchronization in a shorter period of time. A jitter amount calculation unit calculates a jitter amount on the basis of a synchronization packet comprising time information. A jitter accumulation unit calculates a cumulative value of the jitter amount calculated by the jitter amount calculation unit. A comparison unit outputs a frequency error correction value from the calculated cumulative value of the jitter amount. A control voltage generation unit outputs a frequency control voltage that is based on the frequency error correction value. The present technology can be applied to for example a receiver device that is time synchronized with a transmission device.
Abstract:
A chrominance signal processing circuit having N (N ? 2) band-pass filters for dividing a chrominance signal into N regions and N signal processing circuits respectively having different noise eliminating characteristics from each other and each being connected in series to a different one of the N band-pass filters, and means for synthesizing the outputs from the N signal processing circuits to obtain a chrominance signal wherein noise and cross color interference are suppressed.
Abstract:
A digital code reader reads the digital key code in a scrambled video signal. The key code represents the scheme used to scramble the signal before broadcasting and is used by the video receiver to unscramble the received signal. To prevent misreading of the key code due to interference such as ghost signals, the reader uses a predetermined property established for the broadcast signal. The change in that property caused by interference in the received signal is determined and a control signal is generated from that determination. A threshold signal is used to reproduce the key code from the received signal by comparison of the levels of the received signal with the level of the threshold signal. The level of the threshold signal is set by the control signal, which depends on the change detected in the predetermined property of the broadcast signal. Thus the level of the threshold signal can be set to enable the reproduced digital information to match the broadcast digital information.
Abstract:
A MUSE-format video signal decoder comprising a first frame memory supplied with an input digital video signal and having a delay time of 1-frame period; a 1- frame difference detector including a first interpolation filter supplied with the input digital video signal, a second interpolation filter supplied with the digital video signal from the first frame memory, a first subtracter for obtaining the difference between the outputs of the first filer and the first frame memory, and a second subtracter for obtaining the difference between the input digital video signal and the output of the second filter, wherein a 1-frame difference signal is produced in accordance with the outputs of the first and second subtracters; and a 2- frame difference detector including first and second bit compressors supplied with the outputs of the first and second subtracters respectively, a second frame memory having a delay time of 1-frame period and supplied with outputs of the first and second bit compressors, and an adder for obtaining the sum of the other outputs of the first and second bit compressors and the output of the second frame memory, wherein a 2-frame difference signal is produced in accordance with the output of the adder. Due to such constitution, the capacity of each frame memory can bereduced.
Abstract:
A noise reducer of a signal receiving circuit system applying different manners of signal processing to moving video image regions and still video image regions, the noise reducer detecting (2) a two-frame difference signal of a received video signal and subtracting (2A) the two-frame difference signal from the received video signal thereby reducing remaining noise in the still video image region. The proportion of the two-frame difference signal to be subtracted (2A) is controlled (9) by the noise level (8E) of the received video signal and a signal (7) obtained in accordance with the amount of motion in the received video signal.