Class / Patent application number | Description | Number of patent applications / Date published |
348525000 | Sync separation | 24 |
20080252783 | Device for separating synchronous signal and method thereof - In a device for separating a synchronous signal in a video signal, a capacitor receives the video signal to obtain a coupling signal, a level determining circuit receives the coupling signal and compares a voltage level of the coupling signal with a number of reference voltages. The reference voltages define several reference voltage ranges, one of which is a predetermined reference voltage range. The level determining circuit outputs an adjusting signal according to a reference voltage range corresponding to a minimum voltage level of the coupling signal within a predetermined time period. A level adjusting circuit has several current sources for receiving the adjusting signal and thus controls the current sources to adjust a DC level of the coupling signal. A synchronous signal separating circuit separates the synchronous signal from the coupling signal when the minimum voltage level of the coupling signal is substantially within the predetermined reference voltage range. | 10-16-2008 |
20090096923 | SYNC SEPARATION CIRCUIT - A sync separation circuit separates a synchronizing signal from a video signal containing the synchronizing signal. A minimum level detecting section detects a minimum level of a video signal. A sync tip level detecting section detects a sync tip level in the video signal. A pedestal level detecting section detects a pedestal level in the video signal. Based on both the sync tip level detected by the sync tip level detecting section and the pedestal level control by the pedestal level detecting section, a slice level setting section sets a slice level corresponding to an intermediate value between the sync tip level and the pedestal level. The slice level control section sets the slice level based on the minimum level detected by the minimum level detecting section if the slice level set based on the sync tip level and the pedestal level is inappropriate. | 04-16-2009 |
20100315554 | COLOR SIGNAL PROCESSING CIRCUIT, COLOR SIGNAL PROCESSING METHOD AND TELEVISION SYSTEM - According to embodiments, a color signal processing circuit includes: an A/D converter configured to convert an analog television signal into a digital signal by using a clock; a color signal demodulation circuit configured to color-demodulate the television signal converted into the digital signal by the A/D converter; a clock generation section configured to generate the clock that is used by the A/D converter; and a frequency control section configured to control the clock frequency of the clock generation section on the basis of a color subcarrier frequency of a color signal included in the analog television signal and on the basis of the vertical synchronization signal frequency of the analog television signal. | 12-16-2010 |
20110221961 | SYNCHRONIZATION DATA DETECTION APPARATUS, SYNCHRONIZATION DATA DETECTION METHOD, AND RECORDING MEDIUM - According to an embodiment, a synchronization byte detection portion includes: an 0x47 detector configured to sequentially read in TS data in predetermined units from a memory storing TS data including predetermined synchronization data, and detect a predetermined synchronization byte; a counter configured to count a number of times the predetermined synchronization byte is detected by the 0x47 detector; and a determination instruction portion configured such that, in a case where after detecting an initial predetermined synchronization byte, the 0x47 detector reads in TS data at predetermined intervals and the 0x47 detector does not detect the predetermined synchronization byte at the predetermined intervals a predetermined number of times in succession, the determination instruction portion causes the 0x47 detector to sequentially read in TS data from next TS data after the initial predetermined synchronization byte. | 09-15-2011 |
20110242414 | DISPLAY APPARATUS - A display apparatus, equipped with a common input terminal inputting different video signals, can discriminate the type of an input video signal entered from the common input terminal. The display apparatus includes the common input terminal inputting different video signals. A synchronizing signal separation unit separates a synchronizing signal from a video signal entered from the common input terminal. A frequency measurement unit measures a frequency of the synchronizing signal. An input signal discrimination unit discriminates the video signal entered from the common input terminal based on a type of the synchronizing signal separated by the synchronizing signal separation unit and a measurement result obtained by the frequency measurement unit. | 10-06-2011 |
20130107118 | SYSTEM AND METHOD FOR TRANSPORT STREAM SYNC BYTE DETECTION WITH TRANSPORT STREAM HAVING MULTIPLE EMULATED SYNC BYTES | 05-02-2013 |
20130271657 | RECEIVING APPARATUS FOR PROVIDING HYBRID SERVICE, AND HYBRID SERVICE PROVIDING METHOD THEREOF - A receiving apparatus includes a first receiving unit that receives signaling information and a first signal comprising reference data through a radio frequency broadcast network; a control unit that detects a plurality of additional data source information from the signaling information; a second receiving unit that accesses an internet protocol communication network, and receives a second signal comprising additional data from a source apparatus corresponding to each of the plurality of additional data source information; a storage unit that stores the reference data contained in the first signal and the additional data contained in the second signal; and an output unit that processes, synchronizes and outputs each of the reference data and additional data. | 10-17-2013 |
20140132837 | WIRELESS VIDEO/AUDIO DATA TRANSMISSION SYSTEM HAVING I-FRAME ONLY GOP STRUCTURE - A wireless video/audio transmission system includes a transmitter configured to wirelessly transmit video/audio data streams The transmitter has an encoder module for generating the data streams including video data, audio data, and timing information. The video data includes only I-frames. The transmission system includes a receiver with a decoder module including a decoder IC, an SRAM, and a PLL circuit. The decoder IC detects the timing information, adjusts the PLL circuit to synchronize with a reference frequency, and decodes the data streams using the SRAM. Alternatively, the receiver includes a decoder module with a decoder IC and an SRAM. The decoder IC detects the timing information, generates a beacon pulse to be transmitted wirelessly to the encoder module, and the encoder module receives the beacon pulse, adjusts the PLL circuit incorporated within the encoder module accordingly so as to synchronize with the decoder module. | 05-15-2014 |
20140267907 | MULTIMEDIA PRESENTATION TRACKING IN NETWORKED ENVIRONMENT - Methods, devices, systems and computer programs facilitate presentation of a second content in synchronization with a first content. In one method, at least a portion of a first content that is being presented by a first device is received at a second device. The first content includes substantially imperceptible watermarks that are embedded in one or more components of the first content. A first watermark detection result is obtained by performing a watermark detection operation. Additionally, a second watermark detection result associated with the first content is received at the second device from a device other than the second device. The first watermark detection result and the second watermark detection result are augmented to obtain a combined watermark detection result, and the combined detection result is used to enable presentation of a second content in synchronization with the first content. | 09-18-2014 |
20150373233 | DEVICE FOR RECEIVING VIDEO SIGNALS TRANSMITTED OVER A PACKET COMPUTER NETWORK - The presented invention enables the reception of video signals with variable channel synchronization. All logic elements are located on the receiver side that can work with any transmitter. The receiver comprises one or more sets of modules for image processing. These sets of modules adapt the speed of sending data to the frame generator to the speed of data creation on the transmitter side without the use of a precise time pulse source on both sides of the transfer and without feedback from the receiver to the transmitter. The receiver further includes a memory of channel synchronization configuration which determines the allocation of synchronized channels to groups and the detector of starts of frames. These, along with multiplexers of clock signals, ensure the synchronization of channels within groups and allows for modifying this channel distribution. | 12-24-2015 |
348528000 | Including automatic gain control (AGC) | 1 |
20090027553 | IMAGE SIGNAL PROCESSOR AND METHOD THEREOF - An image signal processor and a method for processing an image signal thereof are disclosed. When the image signal processor executes an automatic chroma gain control (ACC), the image signal processor adjusts a variable rate of ACC gain according to a size of an input color signal to reduce a time for processing the ACC. Even if a difference between the size of the input color signal and the size of a reference color signal is large, the ACC is rapidly processed. As a result, transient phenomenon disappears from a screen. | 01-29-2009 |
348529000 | To produce distinct vertical output | 10 |
20090073317 | SECAM-L detector and video broadcast system having the same - A method for detecting SECAM-L signals is disclosed. First, a SECAM-L signal is received and demodulated into a demodulation signal. Then high frequency components of the demodulation signal are filtered out and a low frequency signal, including many sync pulses and many data pulses, is obtained. Next, the low frequency signal is inversion into an inversion signal, having many inversion sync pulses and many inversion data pulses. Afterwards a voltage level of the inversion signal is detected continuously whether it is a lowest level. After that, the lowest level is determined whether belonging to the inversion sync pulses when the voltage level of the inversion signal is the lowest level, and a detection signal is outputted. When the lowest level belongs to the inversion sync pulses, a voltage level of the detection signal is high, and the demodulation signal is an inversion SECAM-L demodulation signal. | 03-19-2009 |
20100110291 | WIRELESS IMAGE TRANSFERRING APPARATUS, WIRELESS IMAGE RECEIVING APPARATUS AND WIRELESS IMAGE TRANSMITTING APPARATUS, AND WIRELESS IMAGE TRANSFERRING METHOD, WIRELESS IMAGE RECEIVING METHOD AND WIRELESS IMAGE TRANSMITTING METHOD - A wireless image transferring apparatus includes a free-run transmitter and a free-run receiver. The free-run transmitter includes a marker appending unit for appending a vertical synchronization marker to image data and a nondisplay period adjustment unit for adjusting the length of nondisplay period of image data according to monitoring information supplied, the transmitter transmitting the image data and receiving the monitoring information. The free-run receiver includes a marker extraction unit for extracting the vertical synchronization marker from the image data received and a marker position monitoring unit for monitoring whether the position of a marker in the image data containing the vertical synchronization marker extracted by the marker extraction unit lies within a predetermined range or not and generating the monitoring information containing a synchronization adjustment amount used to expand or contract the nondisplay period of the image data such that the position of a marker lies within the predetermined range if the position of a marker lies outside the predetermined range, the receiver receiving the image data and feeding back the monitoring information to the transmitter. | 05-06-2010 |
20120182474 | VIDEO PROCESSING APPARATUS - An AV amplifier detects combinations of resolutions and vertical frequencies of input video data, and reads information about combinations of resolutions and vertical frequencies stored in a display device in advance. The AV amplifier sets values, that are a combination of an output resolution and an output vertical frequency in which a value obtained by dividing a vertical frequency of the video data detected by a video detecting section by the output vertical frequency is an integer number and are present in the combinations of the resolutions and the vertical frequencies read by the reading section, as the combination of the output resolution and the output vertical frequency. | 07-19-2012 |
20120188449 | VERTICAL SYNC SIGNAL SEPARATION APPARATUS AND METHOD THEREOF - Vertical sync signal separation apparatus and method are provided. The vertical sync signal separation apparatus includes a parameter detecting unit, a threshold generating unit and a vertical sync signal generating unit. The parameter detecting unit measures a composite sync signal to obtain a maximum and a second maximum positive pulse width, and a maximum and a second maximum negative pulse width. The threshold generating unit outputs a positive pulse threshold based on the maximum and second maximum positive pulse width, and outputs a negative pulse threshold based on the maximum and second maximum negative pulse width. The vertical sync signal generating unit outputs a vertical sync signal by comparing the composite sync signal against the positive pulse threshold and the negative pulse threshold. As such, this apparatus can correctly separate a vertical sync signal from composite sync signals with different standards, thus increasing its supportability. | 07-26-2012 |
20130335630 | VIDEO PROCESSING DEVICE AND VIDEO DISPLAY DEVICE USING SAME, AND SYNCHRONIZATION SIGNAL OUTPUT METHOD - There is provided a video processing device capable of reducing the influence of a disturbance of an input vertical synchronization signal. When the synchronization signal detecting unit detects an input of the input-side vertical synchronization signal at a predetermined cycle, the synchronization signal control unit outputs the input-side vertical synchronization signal, which has been input, as an output-side vertical synchronization signal, and, when the synchronization signal detecting unit detects an input of a next input-side vertical synchronization signal before the predetermined cycle elapses after the output of the output-side vertical synchronization signal, a next input-side vertical synchronization signal input before the predetermined cycle elapses is not output as a next output-side vertical synchronization signal, and an input-side vertical synchronization signal input further next is output as the next output-side vertical synchronization signal. | 12-19-2013 |
348530000 | With distinct horizontal output | 5 |
20090213267 | Video Synchronization System - In one embodiment, a method for synchronizing a plurality of video signals received from one or more video sources is provided. The method includes providing one or more video sources and providing a codec including an internal reference oscillator. The method also includes generating a plurality of horizontal and vertical synchronization pulses based on the reference frequency of the internal reference oscillator, generating a composite synchronization pulse based on the plurality of horizontal and vertical synchronization pulses, and transmitting the composite synchronization pulse to the one or more video sources via a communication link. The method further includes separating the composite synchronization pulse back into the plurality of horizontal and vertical synchronization pulses, generating a pixel clock signal for the one or more video sources based on one or more of the plurality of horizontal and vertical synchronization pulses, and genlocking the one or more video sources based on the generated clock signal. | 08-27-2009 |
20110019090 | VERTICAL SYNCHRONIZATION CONTROLLER - A vertical synchronization controller includes a vertical synchronization separation unit for taking out a vertical synchronizing signal from a decode video signal; a vertical synchronization generation unit for taking out a horizontal synchronizing signal from the decode video signal and generating an internal vertical synchronizing signal; a noise detection unit for detecting the noise amount of the decode video signal; a control unit for determining the current noise state based on the numeric value indicating the noise detection amount, determining whether or not a period of the external vertical synchronizing signal is normal in response to whether or not the external vertical synchronizing signal having the period close to a period of the internal vertical synchronizing signal is input, counting the successive number of times the external vertical synchronizing signal of the normal period has been input, and giving a command responsive to the numeric value indicating the noise detection amount and the successive number of times the external vertical synchronizing signal of the normal period has been input; and a synchronization switch unit for outputting either of the external vertical synchronizing signal and the internal vertical synchronizing signal as a vertical synchronizing signal in response to the command from the control unit. | 01-27-2011 |
20130176490 | PROJECTOR, APPARATUS AND METHOD FOR DRIVING OPTICAL SCANNER THEREOF - A projector and an apparatus and method for driving an optical scanner are disclosed. A sensing signal processor receives a sensing signal that represents sensing of operation of the optical scanner and generates a horizontal scan signal corresponding to a horizontal frequency of the optical scanner on the basis of the received sensing signal. A driving signal generator generates at least one of a horizontal reference signal including line information that indicates the number of horizontal lines of a horizontal driving signal of the optical scanner, a reference clock signal and a scanner driving signal for driving the optical scanner on the basis of the generated horizontal scan signal. | 07-11-2013 |
20130258193 | Video Source Correction - An input card of video switcher includes a detection block for detecting errors in the timing signals of a digital video signal within a range. For timing signals with errors that fall within the range, the input card implements a correction block to correct the signals to an expected resolution. For timing signals with errors that fall out of the range, the input card does implement the correction block and passes the raw timing signal through. | 10-03-2013 |
20160156889 | CONTROL SYSTEM AND METHOD FOR A DEVICE FOR GENERATING SCANNED IMAGES, IMAGE GENERATING DEVICE AND DISPLAY INCLUDING SUCH A SYSTEM | 06-02-2016 |
348533000 | Noise reduction | 3 |
20120069244 | METHOD AND CIRCUIT FOR RECOVERING A SYNC SIGNAL FED VIA A CABLE TO A RASTER SCAN DISPLAY DEVICE - In a method and circuit for recovering a sync signal from an input sync signal passing through a cable to a display device, an average value of the input sync signal is obtained during a predetermined time period so as to obtain a sync threshold, which is compared with the input sync signal. A sync signal is output when the input sync signal is greater than the sync threshold. | 03-22-2012 |
20120236202 | VIDEO SIGNAL PROCESSING CIRCUIT AND METHOD APPLICABLE THERETO - A video signal processing circuit includes: a composite sync signal generation circuit, generating a composite sync signal from a received composite video signal; a signal-noise-ratio calculation unit, generating a SNR of the composite video signal; a timing generation unit, generating a gated window based on the SNR; and a vertical sync signal separation unit, generating a vertical sync signal from the composite sync signal based on the SNR and the gated window, and dynamically adjusting a detection criterion on the vertical sync signal. | 09-20-2012 |
348534000 | Amplitude limiting | 1 |
20120242899 | SLICER LEVEL CALCULATOR - A slicer level calculator including a signal detector, a moving average calculator, a sync-tip voltage sample circuit, a blanking voltage sample circuit, a slicer level calculator, and a rear-end processor is disclosed. The signal detector determines whether an input video signal satisfies a low signal to noise ratio (SNR) criterion. If so, the first signal detector further enables a low SNR control signal. The moving average calculator obtains a moving average voltage level of the input video signal. The sync-tip voltage sample circuit, the blanking voltage sample circuit and the slicer level calculator obtain a sync-tip voltage level, a blanking voltage level, and a slicer voltage level, respectively. The rear-end processor selectively executes low-pass filtering operation on the slicer voltage level in response to the low SNR control signal. | 09-27-2012 |