Abstract:
A digital signal transmitting system and method, transmitting apparatus and method, and receiving apparatus and method for allowing reproduction of audio reference clocks of different frequencies from video reference clocks. Pixel clocks are frequency-divided to a predetermined frequency by a divider part (51) and compared in phase by a phase comparator part (52). An Fs decoder part (32) decides frequency division ratios P and Q based on Fs information transmitted from a transmitter side and representing the audio clock frequency, and supplies them to variable divider parts (55,56). As a result, even when the audio clock frequency varies, the oscillation frequency of a VCO part (54) can be kept constant, so that the variable divider part (56) outputs signals of a constant frequency, thereby keeping the frequency of the signals to be inputted to the phase comparator part (52) constant. The invention is applicable to an AV signal transmitting/receiving apparatus.
Abstract:
AN CONTOUR CORRECTING CIRCUIT FOR CORRECTING THE CONTOUR WITHOUT DETERIORATION OF IMAGE QUALITY OF THE VIDEO SIGNAL, COMPRISING A FIRST HPF FOR EXTRACTING THE HIGH FREQUENCY SIGNAL COMPONENT OF THE VIDEO SIGNAL SUPPLIED FROM AN INPUT TERMINAL TIN, A SECOND HPF FOR DIFFERENTIATING THE OUTPUT OF THE FIRST HPF ADDITIONALLY, AND A CORRELATOR FOR SYNTHESIZING THE OUTPUT SIGNALS OF THE OUTPUT AND THE INVERTED OUTPUT OF SAID FIRST HPF, AND THE OUTPUT OF THE SECOND HPF TO FORM A SIGNAL HAVING A PREDETERMINED SIGNAL WAVEFORM,WHEREIN THE CORRELATOR FORMS A SIGNAL WAVEFORM OF THE PRESHOOT PORTION AND OVERSHOOT PORTION WITH THE FIRST ORDER DIFFERENTIAL OUTPUT WHICH IS RELATIVELY STATIC AT THE INFLECTION POINT OF THE VIDEO SIGNAL, SYNTHESIZES A SECOND ORDER DIFFERENTIAL WAVEFORM SO AS TO BE A SHARP SIGNAL WAVEFORM AT THE MIDDLE PORTION, AND PERFORMS SHARPNESS PROCESSING OF THE VIDEO SIGNAL SIGNAL BY USE OF THE CONTOUR CORRECTION SIGNAL.
Abstract:
An contour correcting circuit for correcting the contour without deterioration of image quality of the video signal, comprising a first HPF (1) for extracting the high frequency signal component of the video signal supplied from an input terminal Tin, a second HPF (2) for differentiating the output of the first HPF additionally, and a correlator (5A,5B) for synthesizing the output signals of the output and the inverted output of said first HPF, and the output of the second HPF to form a signal having a predemermined signal waveform, wherein the correlator forms a signal waveform of the preshoot portion and overshoot portion with the first order differential output which is relatively static at the inflection point of the video signal, synthesizes a second order differential waveform so as to be a sharp signal waveform at the middle portion, and performs sharpness processing of the video signal by use of the contour correction signal.
Abstract:
An contour correcting circuit for correcting the contour without deterioration of image quality of the video signal, comprising a first HPF (1) for extracting the high frequency signal component of the video signal supplied from an input terminal Tin, a second HPF (2) for differentiating the output of the first HPF additionally, and a correlator (5A,5B) for synthesizing the output signals of the output and the inverted output of said first HPF, and the output of the second HPF to form a signal having a predemermined signal waveform, wherein the correlator forms a signal waveform of the preshoot portion and overshoot portion with the first order differential output which is relatively static at the inflection point of the video signal, synthesizes a second order differential waveform so as to be a sharp signal waveform at the middle portion, and performs sharpness processing of the video signal by use of the contour correction signal.
Abstract:
PROBLEM TO BE SOLVED: To carry out the flexible and efficient detection of hierarchical characteristics. SOLUTION: A low-level characteristic detection system 31 is a processing system for detecting the characteristics directly obtained by analyzing a video signal and an audio signal of a content. A middle-level characteristic detection system 32 is a processing system for detecting the characteristics based on detection results obtained by the low-level characteristic detection system 31, and a high-level characteristic detection system 33 is a processing system for detecting the characteristics based on detection results obtained by the middle-level characteristic detection system 32. In a signal processor, characteristic detection is generally carried out in such a hierarchical manner that the low-level characteristics are detected by the low-level characteristic detection system 31, the middle-level characteristics by the middle-level characteristics detection system 32, and the high-level characteristics by the high-level characteristics detection system 33. This invention is applicable to an image recording device for handling a content. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To easily generate a database of content character information made to correspond to video contents. SOLUTION: Some image data are selected out of imaging data as representative image data DPr representative of the imaging data, a representative image 51 based upon the representative image data DPr is displayed on a display device, and a user is made to input image text information TX corresponding to the representative image 51. Further, representative feature information DSr extracted from the representative image data PDr according to an extracting method using luminance and the image text information TX are registered while being made to correspond to each other, thereby generating an image-text database 42 for acquiring content character information TXc corresponding to an image that recorded-imaging data have by using input video feature data TS extracted from an arbitrary video content like the recorded-imaging data in the same extracting method with the representative feature information DSr. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To switch an oscillation frequency range of VCO of PLL for audio clock reproduction on the receiving side according to the change of an audio sampling frequency even without transmitting information indicating the audio sampling frequency as information for locking the PLL for audio clock reproduction on the receiving side. SOLUTION: When a frequency of a pixel clock is set as fp, the audio sampling frequency is set as fs and a frequency of an audio clock to be reproduced is set as fa, fa=384fs=(N/M)fp, in the case of fs=48 kHz, M=27000, N=18432 and in the case of fs=44.1 kHz, M=30000 and N=18816. A VCO control part 50 detects the change of the audio sampling frequency fs from a control voltage Vctl of the output of a loop filter 44 or a frequency fo of an output clock of an oscillation part 30 and selects either of VCOs 31, 32. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To solve the problem that it is difficult and troublesome to look for a program out of many programs or information about the many programs. SOLUTION: Received EPG information is stored in a database 12. The EPG information is read by a vocabulary segmentation part 31, which segments the read EPG information by the unit of the vocabulary. The segmented vocabulary is supplied to a registration part 41. When the supplied vocabulary is a part of speech or a word set in advance, the registration part 41 registers it in a related information file. A prescribed vocabulary and a program (EPG information) including the vocabulary are correlated and stored in the related information file. The vocabulary stored in the related information file is emphasized and displayed when EPG is provided to a user. The emphasized and displayed vocabulary has a link, and when the vocabulary is selected, information of a link destination is provided to the user. This method can be applied to a set top box dealing with the EPG information. COPYRIGHT: (C)2004,JPO