
	Where results make sense

Topic: Vertical synchronization

In the News (Wed 15 Feb 12)

EXECUTIVE POWER

Iran

ANALYSIS

Pakistan

Family compact

	Apparatus for inserting data into the vertical blanking interval of a video signal - Patent 6064440
		Synchronization pulses from the video signals are provided to the transport/interrupt processor 316 and the autobuffer units 328a, 328b.
		Upon reaching the next vertical interrupt, the DSP 318 loads the autobuffer unit 328a with a pointer to the area of memory device 326a where this second field of data is located.
		Upon receipt of a vertical synch pulse, DSP 318 determines, at block 430, whether it has data to be inserted in the field corresponding to the received vertical synch.
	www.freepatentsonline.com /6064440.html (7752 words)

	[No title] (Site not responding. Last check: 2007-10-17)
		If the bits indicate a progressive picture, then the vertical sync pulse initiating the first field of this picture is advantageously modulated accordance with the inventive arrangements such that the pulse width T of the vertical sync pulse corresponding to the first field is reduced by MPEG decoder 210.
		In any case, the timing of the leading edge a of the vertical sync pulse depicted in Figure 2B is preserved to ensure proper timing of vertical synchronization with the pulse trailing b advantageously positional modulated to indicate the first field.
		The method of claim 6, wherein said picture further comprises a second field identified by said vertical synchronization signal, wherein a width of said vertical synchronization signal is unmodified and corresponds to a second field.
	www.wipo.int /cgi-pct/guest/getbykey5?KEY=02/51144.020627&ELEMENT_SET=DECL (2448 words)

	[No title] (Site not responding. Last check: 2007-10-17)
		The determination unit 460 determines whether the horizontal or vertical synchronization signals transmitted from the TMDS reception unit 410 are input, and performs a normal mode or power saving mode depending upon determination results.
		The driver circuit as set forth in claim 4, wherein the determination unit determines whether the horizontal or vertical synchronization signals are normal by checking periods of the horizontal or vertical synchronization signals or counting numbers of clocks in a specified range.
		The liquid crystal display as set forth in claim 15, wherein the determination unit determines whether the horizontal or vertical synchronization signals are normal by checking periods of the horizontal or vertical synchronization signals or counting numbers of clocks in specified ranges.
	www.wipo.int /cgi-pct/guest/getbykey5?KEY=04/72943.040826&ELEMENT_SET=DECL (2800 words)

	Setting Up X11
		It's not enough to just deflect, of course; somehow you need to ensure that the scanning is synchronized with the incoming signal, so that the scan is at the top of the screen when the picture information for the top of the screen arrives.
		Synchronization is achieved by including synchronization pulses in the horizontal and vertical retrace periods.
		Instead of displaying the frame in one vertical scan, the odd and even lines are displayed in two alternating half frames, which increases the apparent frame frequency to 50 or 60 Hz.
	www.linuxjournal.com /node/1089/print (3717 words)

	Video Signal Measurement Fundamentals - Tutorial - Development Library - National Instruments
		This is actually a series of pulses that occur between fields to signal the monitor to perform a vertical retrace and prepare to scan the next field.
		Immediately after the vertical synchronization pattern for the odd field, optional insertion test signals (ITS) are inserted.
		However, the vertical synchronization signals are composed of pulse trains distributed on several lines, and the pulse trains are different for odd and even fields.
	zone.ni.com /devzone/conceptd.nsf/webmain/0E5DAD8917692B5D86256F3500549509 (1760 words)

	VGA Video (6.111 labkit)
		Separate horizontal and vertical synchronization signals are used to define the ends of each line and frame.
		A composite synchronization signal (actually an XOR of the horizontal and vertical signals) is also encoded on the green color channel.
		Note that the composite sync signal embedded in the green channel appears inverted during the vertical sync pulse: remember that the composite sync is an XOR of the horizontal and vertical sync signals.
	web.mit.edu /6.111/www/s2004/NEWKIT/vga.shtml (830 words)

	NTSC Television on Oscilloscope (Site not responding. Last check: 2007-10-17)
		The incoming signal consists of information about screen pixel information, timing of the raster scan, color table, etc. Here on the left is the signal with the vertical synchronization raster scan porch in the center.
		Since the vertical sync pulses are shorter (depends on how you look at it) than the horizontal sync pulses, an integrator can be used to detect a change in pulse width.
		They tell the television the location of the current pixel, and are resetted by the vertical and horizontal sync pulses.
	www.people.cornell.edu /pages/cak46/425 (651 words)

	A Low Power Video Timing Module
		The vertical interval is also uniform and repetitive but is different for each field, which provides the additional information to maintain, or "sync", the interlaced fields.
		Multiples of this rate determine field period, horizontal sync and blank period, vertical sync and blank period, and the vertical interval durations.
		1 we see that vertical sync and blank are time coincident with either the leading edge of horizontal sync or the mid-point of horizontal sync.
	bwrc.eecs.berkeley.edu /People/Grad_Students/rsutton/other_projects/lpvtm/TimingModule.html (2147 words)

	High-Performance Graphics and TV Output Comes to the Second-Generation Intel® Centrino® Mobile Technology ...
		The timing information is usually carried on separate signals for horizontal and vertical synchronization pulses; however, some monitors require the synchronization of information to be placed on the green channel.
		The vertical synchronization pulse indicates when to start a new frame of data; the horizontal synchronization pulse indicates when to start a new line.
		In order to differentiate the two fields, the vertical synchronization pulse is skewed by a half line between Field 1 and 2 (but not between 2 and 1).
	support.intel.com /technology/itj/2005/volume09issue01/art03_hiperf_graphics/p05_tvout.htm (2141 words)

	Synchra-Logica: The Logic of Synchronization Technology
		Vertical market segments such as field service and sales are beginning to derive the benefits of one of the fastest ROIs at the lowest overall purchase price for a pervasive technology.
		Vertical market segments such as the energy and utilities markets paired with service providers are using advanced synchronization technologies to monitor mission-critical services.
		Synchronization is on its way to filling an obvious gap between the real-time and near-real-time experience of the mobile user community.
	www.marketresearch.com /researchindex/696415.html (412 words)

	TFT LCD Interface Signals - Sharp Microelectronics of the Americas - Application Selector Guide - Sharp ...
		Vertical Synchronization signals (Vsync): There are ‘M’ number of Hsync periods per Vsync period where ‘M’ is the number of vertical lines in the display.
		The Horizontal Synchronization signal is a pulse that is activated when one line of data has been transmitted to the LCD.
		The Vertical Synchronization signal is a pulse that is activated when one page (or frame) of data has been transmitted to the LCD.
	www.sharpsma.com /lcd/lcdguide/Integration/TFT_LCD_interface.php (537 words)

	AX and EGA video display apparatus utilizing a VGA monitor - Patent 5189401
		Similarly, the blanking signal on the output 22 is normally connected directly to the blanking input 17 of the DAC 15, while the horizontal and vertical synchronizing signals on the outputs 23 and 24 are normally connected directly to the horizontal and vertical synchronizing inputs 14H and 14V, respectively, of the VGA monitor 11.
		The controllers 40 provide master EGA synchronization and blanking signals, such as the vertical synchronizing signal on an output 43, the horizontal synchronizing signal on an output 44 and the blanking signal on an output 45.
		The horizontal synchronizing and blanking signals on the outputs 44 and 45 are re-entrantly passed through the register for two pixel clock times so as to effect the two-bit delay.
	www.freepatentsonline.com /5189401.html (4558 words)

	7 - C H A P T E R -
		All the displays must be synchronized so that the left and right views can be seen correctly through one set of LCD stereo glasses.
		When using framelock with genlock (Chapter 7), the vertical reset is always received on the same video line.
		Buffer swap synchronization enables a simultaneous swap of buffer memory contents on all Sun XVR-4000 graphics accelerator subsystems, no matter which of the accelerators finishes rendering its scene content last.
	www.sun.com /products-n-solutions/hardware/docs/html/817-2400-10/chap7.framelock.html (1331 words)

	Modeline howto -- Displaying vertical games on a horizontal monitor (Site not responding. Last check: 2007-10-17)
		Well, if you try to run a vertical game on a horizontally mounted monitor, the axis switch, the columns become rows and the rows become columns.
		But while the image is a perfect duplicate at the pixel level, you may notice that there are some subtle differences between the two displays, namely the direction of the scanline.
		Obviously, there is also some wasted space, as vertical games run horizontally don't take up the entire screen (naturally this all applies to horizontal games run vertically).
	easymamecab.mameworld.net /html/monitor8.htm (853 words)

	PXLab Timing
		The lower trace is the vertical synchronization signal of the VGA-port and the upper trace is the video signal of the blue channel.
		This means that it synchronizes to the vertical retrace signal shown in the lower trace of the previous pictures.
		The vertical bar is shown starting with the retrace and after 4 ms the bar is replaced by a ClearScreen and this should happen while the video beam runs down the screen.
	www.uni-mannheim.de /fakul/psycho/irtel/pxlab/doc/timing (5788 words)

	STMicroelectronics \| HIGH-END I2C CONTROLLED DEFLECTION PROCESSOR FOR MULTISYNC MONITOR - STV6889
		The PLL2 control current (see Figure 7) is significantly increased during discharge of vertical oscillator (during vertical retrace period) to be able to make up for the difference of dynamic phase at the bottom and at the top of the picture.
		As all the components of the resulting correction waveform are generated from an internal linear vertical sawtooth waveform bearing VSIZE and VPOS adjustments, they all track with vertical amplitude and position, thus being fixed vertically on the screen.
		The early vertical blanking pulse is obtained by a logic combination of vertical synchronization pulse and pulse corresponding to vertical oscillator discharge.
	www.st.com /stonline/products/literature/ds/9946/stv6889.htm (9653 words)

	LJ #15, July 1995: Setting Up X11
		Similarly, when the vertical deflection reaches the bottom of the screen, it performs a vertical r etrace, which is also not used for display.
		Synchronization is achieved by including synchronizat i on pulses in the horizontal and vertical retrace periods.
		For reasons lost in history, CRT controllers start counting at the top left of the display, and not at the vertical sync pulse, which is the r eal beginning of the display.
	linux4u.jinr.ru /usoft/WWW/LJ/issue15/x11.html (3736 words)

	PC with multiple video-display refresh-rate configurations using active and default registers (US6049316)
		The vertical refresh rate for each resolution is stored in a default register on the graphics controller chip.
		The vertical refresh rate from default register is copied to an active refresh-rate register when a legacy (non Plug-and-Play) monitor is detected.
		driving means, coupled to the vertical synchronization timer, for driving the vertical synchronization pulse to an external cathode-ray-tube (CRT) monitor, the vertical synchronization pulse for resetting the external CRT from a last line of pixels to a first line of pixels;
	www.delphion.com /details?pn=US06049316__ (590 words)

	STMicroelectronics \| TEA2037A HORIZONTAL & VERTICAL DEFLECTION CIRCUIT
		During the vertical scanning flyback time, the value of the yoke inductance "L" must be taken into account since the time constant L/R is no longer negligible.
		During the second half of the vertical scanning time, transistor T2 conducts and capacitor C is charged to VCC through D1, D2, R3 and T2.
		In su c h case, efficient synchronization can be achieved by differentiating the signal so that it will behave as a signal of only few lines duration which is the condition required for appropriate frame and line sync separation and also a picture without flag effect.
	www.st.com /stonline/products/literature/an/1618.htm (3568 words)

	video_musings
		Present here are horizontal and vertical synchronizing signals plus a special control line called ESYNC or enable sync line.
		This line determines whether the synchronizing signals used in the video system original on the planar board or from an adapter plugged into the Micro Channel.
		Vertical Synchronization: This signal is the vertical synchronization signal to the display.
	www.gilanet.com /Ohlandl/video/video_musings.html (1660 words)

	Video Mode Timings
		During both the horizontal and vertical retrace, the electron beam is turned off (blanked).
		The position of the image on the screen is influenced by the moments at which the synchronization pulses occur.
		The horizontal retrace time is the sum of the left margin, the right margin and the hsync length, while the vertical retrace time is the sum of the upper margin, the lower margin and the vsync length.
	theoryx5.uwinnipeg.ca /XFree86/3.3.6/fbdev6.html (455 words)

	8 - C H A P T E R -
		Framelock synchronizes two video streams by asynchronously resetting the slave device is vertical timing, and does not guarantee that pixels are aligned in the two streams.
		The composite (or horizontal) synchronization signal is normally used for genlock and is typically the BNC connector on the fl wire.
		Using only genlock (rather than bothlock) enables vertical synchronization with the genlock master source only for composite synchronization video formats, with serrations, for pixel clocks less than 150 Mhz.
	www.sun.com /products-n-solutions/hardware/docs/html/817-2400-10/chap8.genlock.html (1588 words)

	VCR knowledge page (Site not responding. Last check: 2007-10-17)
		The head switch could also be positioned at the start of the vertical synchronization, zero lines in front of the vertical synchronisation (See Figure 25).
		The relation between vertical and horizontal synchronization is not fixed.
		During trick modes, but there are exceptions (Read exceptions), the vertical synchronization pulse is replaced by a single pulse with a duration of 2.5 lines to 10 lines.
	macbase.cg.nu /vcr.htm#2.5. (3516 words)

	STMicroelectronics \| LOW-COST I2C CONTROLLED DEFLECTION PROCESSOR FOR 19 INCH. MULTISYNC CRT MONITORS - TDA9112A
		Sad16h/D5 - VSyncSel Vertical Synchronization input Selection between the one extracted from composite HV signal on pin H/HVSyn and the one on pin VSyn.
		It consists of a parabola of vertical deflection frequency, on which a parabola of horizontal deflection frequency is superimposed.
		As the vertical parabola component is generated from the output vertical deflection drive waveform, it tracks with real vertical amplitude and position.
	www.st.com /stonline/products/literature/ds/9949.htm (10356 words)

	ALOA
		At the end of each frame or field, a vertical sync pulse is added.
		Each horizontal sync pulse is inserted in the video signal within the time of the horizontal blanking pulse and each vertical sync pulse is inserted in the video signal within the time of the vertical blanking time.
		A color video signal is the same as monochrome except that the color information in the scene is also included, which is transmitted separately.
	stamhost.com /aloa/article_video_signal.htm (889 words)

	System for synchronizing audiotape and videotape machines (US4743981)
		The speed of the audiotape machine is regulated by correlating a video synchronization signal previously recorded onto the audiotape with a video synchronization signal controlling the videotape recorder during the recording.
		Highly accurate synchronization between the two machines is achieved.
		This allows for the transfer of multiple audio tracks from the multitrack audiotape onto the videotape and then onto multiple laser videodiscs, such that during playback of the multiple laser videodiscs, the laser videodisc players can be synchronized with each other.
	www.delphion.com /details?patent_number=4743981 (401 words)

	Modifying Sony GDM-20D11 for PC (Site not responding. Last check: 2007-10-17)
		I cannot confirm what "composite sync" is, but I deduce it is both vertical and horizontal sync signals combined; ie, 2 signals combined into 1.
		A layman term, to mean 3 signals are combined into a single path: horizontal sync, vertical sync and green.
		As far as video synchronization signals are concerned, the input to this module/PCB is, naturally the 13W3 video connector, while the output (to the rest of the monitor) are 4 signals (in addition to the basic R.G.B. signals of course):
	ivanl.host.sk /gdm20d11 (885 words)

	Vertical Synchronization - VSYNC
		Short for Vertical Synchronization, VSYNC is a signal used to describe the process or set a value telling the monitor when to draw the next vertical line.
		The time it takes for this to occur is measured in Hertz (Hz).
		Were you able to locate the answer to your questions?
	www.computerhope.com /jargon/v/vsync.htm (50 words)

	Siebel CRM OnDemand: Alliance Partner Profiles
		Using eBRIDGE solutions, Siebel customers can seamlessly link customer records and information, invoices, and other business critical information from accounting records to Siebel CRM OnDemand and back, ensuring that the information customers need to run their business is instantly where they need it and when they need it.
		Extraprise has successfully deployed nearly every enterprise, mid-market and vertical solution in the Siebel portfolio and is expanding into the CRM OnDemand market segment.
		InFact France is the head office of InFact Group, a leading eBusiness and business intelligence consulting firm with offices on three continents dedicated to providing customers with eBusiness project solutions that match their requirements and permit strong return on investment.
	www.crmondemand.com.au /partners/partner-profiles.jsp (2102 words)

Try your search on: Qwika (all wikis)