摘要:
In a recording and reproducing apparatus in which a video signal is recorded by at least one rotary head in successive parallel tracks on a recording medium while the latter is being driven at a predetermined or standard speed in a direction to which said tracks are skewed, and in which the recorded video signal is reproduced by the rotary head repeatedly scanning the recording medium while the latter is selectively driven at the standard speed, as in the normal reproducing mode, or at an arbitrary speed other than such standard speed, for example, at zero speed for the still-motion reproducing mode, or at speeds less than and greater than the standard speed for the slow-motion and quick-motion reproducing modes, respectively; a variable delay circuit is operative during reproducing with the recording medium being driven at an arbitrary speed other than standard speed for variably delaying the video signal reproduced by said rotary head, and a control circuit controls the amounts by which the variable delay circuit delays the reproduced video signal in accordance with the arbitrary speed to cause fields of the reproduced video signal which are contiguous or next adjacent in point of time to be continuous in the delayed video signal and to contain respective horizontal synchronizing signals which are in predetermined phase relationships to each other, that is, precisely in phase or out of phase by one-half horizontal period, as when even- and odd-numbered fields are to be interlaced.
摘要:
A shift register is provided. In each of successively cascaded shift register units, for a first switch, control and output terminals are coupled to a first node and an output node respectively, and an input terminal receives a first clock signal. For a second switch, input and output terminals are coupled to the control terminal of the second switch and the first node respectively. For a third switch, a control terminal is coupled to the first node, and an input terminal receives the first clock signal. A first capacitor is coupled between an output terminal of the third switch and the first node. For a fourth switch, an input terminal is coupled to the first node, and an output terminal is coupled to a low voltage terminal. For a current shift register, a control terminal of the second switch receives an output signal generated by previous shift register unit.
摘要:
A display device where a memory circuit is installed into each pixel without generating flicker, including a plurality of pixels arranged in a matrix, wherein each pixel has a light-transmissive element controlling the amount of transmissive light in response to a voltage difference between a first electrode and a second electrode, a memory circuit storing the voltage level of the first electrode, and a controller. In the case where the first electrode has a positive voltage level with respect to the second electrode at a refreshing timing, the controller makes the memory circuit store the voltage level of the first electrode, applies a first predetermined voltage to the second electrode to increase the voltage level of the first electrode by the first predetermined voltage, and discharges the first electrode so that the first electrode has a negative voltage level with respect to the second electrode.
摘要:
A drive circuit is disclosed. The drive circuit includes a first p-typed thin film transistor (PTFT), a second PTFT, a first n-typed thin film transistor (NTFT), a second NTFT and a capacitor. The drain of the first PTFT is coupled to a first electrical line, and the gate thereof is coupled to a first clock line. The drain of the second PTFT is coupled to a second clock line, and the source thereof is coupled to an output. The source of the first NTFT is coupled to a second electrical line, and the gate thereof is couple to an output of a preceding drive circuit. The source of the second NTFT is couple to a third electrical line, the gate thereof is coupled to a third clock line, and the drain thereof is coupled to the output. The capacitor has one end coupled to the second electrical line, while the other end is coupled to the source of the first PTFT, the drain of the first NTFT and the gate of the second PTFT.
摘要:
A demultiplexer includes an input terminal for providing an input signal, a plurality of output terminals for outputting the input signal, and a switching circuit coupled among the input terminal and the plurality of output terminals, and outputting the input signal selectively from the plurality of output terminals according to a plurality of control signals provided to a plurality of control terminals. For miniaturizing the demultiplexer, the switching circuit includes one or more switch elements connected between the input terminal and each of the output terminals in series, wherein at least two of the switch elements coupled to different output terminals are simultaneously switched in response to one control signal from the plurality of control terminals.
摘要:
A display device whose pixels being embedded with a memory is disclosed. These pixels each includes: a capacitor; a switching unit between the display unit and the capacitor, being turning on during the sampling period; and a voltage detecting circuit for detecting the voltage between the capacitor and the switching unit. Besides, the display unit also includes: a first capacitor voltage source connected to a terminal of the capacitor which is not connected to the voltage detecting circuit, and applying a predetermined voltage within the variation range of the voltage state of the display unit on the capacitor in the sampling period; and/or a second capacitor voltage source, being connected to a terminal of the display unit which is not connected to the switching unit, and applying a predetermined voltage within the variation range of the voltage state of the display unit on the display unit in the sampling period.
摘要:
An active matrix display apparatus with touch sensing function having high aperture ratio includes a plurality of pixels, having respective pixels arrayed as a matrix, positioned at intersections of source lines of respective columns and gate lines of respective rows, each pixel having a thin film transistor and a liquid crystal element, which is positioned between a drain of thin film transistors and a common line; and a touch switch unit having touch sensing transistors and a mechanical switch, which is positioned between two adjacent pixels in an identical column. The gates of the touch sensing transistors are coupled to the gate lines of the two adjacent pixels wherein the touch sensing transistors coupled in series and the mechanical switch shared by the adjacent pixels, are coupled between the source line of the identical column and the common line.
摘要:
It is an object of the present invention to reliably avoid problems with a load connected when stopping the operation of a charge pump circuit. The charge pump circuit is provided with a first switching element (S1) connected to a power supply, a second switching element (S2) connected to a load (102)and a capacitor element (Cp) connected between the first switching element (S1) and the second switching element (S2), and moves charge in a direction opposite to the direction in which charge moves during normal operation by inverting the phase of any one of clock signals applied to the first switching element (S1), second switching element (S2) and capacitor element (Cp) during normal operation.
摘要:
A display device which can authenticate fingerprint without a fingerprint sensor device and can be prevented from large size or reduced the size. A display device (1) is provided with a pixel or sub pixel comprising a photo diode (11) for detecting a light from a object, a holding capacitor (13) for holding a voltage (Vn1) corresponding to an intensity of the light detected by the photo diode (11), and a refreshing means (18) for writing a voltage (Vdd or Vss) into the holding capacitor (13) (node N1) on the basis of the voltage Vn1 held in the holding capacitor (13).
摘要:
The invention aims at preventing an occurrence of artefacts while reducing power consumption. A matrix addressing method for alternately driving pixels. The frame period of the images is formed by successively sequencing on a time series a plurality of block periods, the block periods each being composed of a first half block being a period for successively sequencing on a time series application timings of the pixel voltages for one or more row electrodes to be provided with one polarity, the second half block being a period for successively sequencing on a time series application timings of the pixel voltages for one or more row electrodes to be provided with the other polarity. Ones of even-numbered row electrodes and odd-numbered row electrodes in arrangement order on the display screen are selected in the first half block. The others spatially adjoining the ones are selected in the second half block. A row electrode selecting order in the first half block and a row electrode selecting order in the second half block during one frame period are made differed from orders in the corresponding half blocks during the other frame period, respectively, so as to mitigate block-period-base visual artefact.