Abstract: An image encoding method includes generating a predictive signal and encoding mode information according to each encoding mode from a macroblock signal corresponding to each macroblock, selecting a quantization code table corresponding to each macroblock, generating a predictive error signal for each encoding mode based on the macroblock signal and the predictive signal, subjecting the predictive error signal to orthogonal transformation, quantizing the orthogonal-transformed predictive error signal while changing a quantization parameter for every plural sub-pixel-blocks, using the quantization code table corresponding to the macroblock, encoding quantization transformation coefficient, calculating an encoding cost, selecting one encoding mode based on the encoding cost, selecting one quantization code table based on the encoding cost, and encoding information of an index indicating the selected quantization code table for every frame of the input image signal or every region of the frame.

Abstract: In an embodiment of the invention, a method for coding a moving picture comprises: dividing an inputted picture signal into fractionized signals respectively corresponding a plurality of pixel blocks; generating a prediction signal and coding mode information from each of said fractionized signals, for each coding mode; generating a prediction residual signal, from the prediction signal and said each of fractionized signals; estimating a first-estimate coding cost that is for coding the prediction residual signals for said each coding mode, from the prediction residual signals and the coding mode information; determining a candidates' number in accordance with step width of quantizing; selecting the coding modes having smallest ones of the first-estimate coding costs as candidates; estimating a second-estimate coding cost by coding the inputted signal and thereby finding a coding distortion and a code amount; and employing one coding mode from the candidates on basis of the second-estimate coding cost.

Abstract: An image encoding method includes generating a predictive signal and encoding mode information according to each encoding mode from a macroblock signal corresponding to each macroblock, selecting a quantization code table corresponding to each macroblock, generating a predictive error signal for each encoding mode based on the macroblock signal and the predictive signal, subjecting the predictive error signal to orthogonal transformation, quantizing the orthogonal-transformed predictive error signal while changing a quantization parameter for every plural sub-pixel-blocks, using the quantization code table corresponding to the macroblock, encoding quantization transformation coefficient, calculating an encoding cost, selecting one encoding mode based on the encoding cost, selecting one quantization code table based on the encoding cost, and encoding information of an index indicating the selected quantization code table for every frame of the input image signal or every region of the frame.

Abstract: A video image encoding method includes: obtaining a first motion vector that indicates relevancy between an input image that is to be encoded and a locally decoded image that is decoded from an encoded image; generating a filter for the locally decoded image, the filter that minimizes an error between the input image and an image obtained by performing motion compensation for a reference image using the first motion vector; generating the reference image by filtering the locally decoded image by the filter; obtaining a second motion vector that indicates relevancy between the input image and the reference image; generating a predictive image by performing motion compensation for the reference image using the second motion vector; and encoding a predictive error that is quantized by orthogonally transforming and quantizing a predictive error between the predictive image and the input image.

Abstract: In an embodiment of the invention, a method for coding a moving picture comprises: dividing an inputted picture signal into fractionized signals respectively corresponding a plurality of pixel blocks; generating a prediction signal and coding mode information from each of said fractionized signals, for each coding mode; generating a prediction residual signal, from the prediction signal and said each of fractionized signals; estimating a first-estimate coding cost that is for coding the prediction residual signals for said each coding mode, from the prediction residual signals and the coding mode information; determining a candidates' number in accordance with step width of quantizing; selecting the coding modes having smallest ones of the first-estimate coding costs as candidates; estimating a second-estimate coding cost by coding the inputted signal and thereby finding a coding distortion and a code amount; and employing one coding mode from the candidates on basis of the second-estimate coding cost.

Abstract: A geomagnetism sensor (2) outputs the vertical magnitude of geomagnetism as a detection signal (Vy). An A-D converter (5) converts the detection signal (Vy) into digital data which in turn is supplied to a CPU (6) together with data from a memory (1). The CPU (6) performs a computation based on a vertical deflection signal (VH), the data from the memory (1) and the detection signal (Vy) to provide parameters (hposi, yvj, vcancel) for determining current values to be supplied to a deflection yoke (13), a convergence correction coil (14) and a beam landing correction coil (15). D-A converters (7-9) convert these parameters into analog signals. Drive circuits (10-12) receives the analog signals provided by conversion to generate current for driving the deflection yoke (13), the convergence correction coil (14) and the beam landing correction coil (15). Image variations under the influence of the vertical component of geomagnetism are automatically corrected.

Abstract: A problem to be solved by the invention is to prevent a digital convergence correction device from lowering in precision of correction performed when a relation between screen raster and effective area of picture varies. A vertical display area detection signal that corresponds to a position in vertical direction of a picture display area on a screen is generated in accordance with a vertical deflecting current. An address counter for generating an address for reading out correction data is controlled in accordance with the signal.

Abstract: Provided are an image correcting method and device capable of reducing power consumption necessary for correcting an image for a long-time use and a cathode ray tube display unit. A microcomputer 2 calculates a value of a correction current in such a manner that the correction current is more decreased monotonously as a time passes after a cathode ray tube is turned on. Drivers 3 to 7 and 22 generate and output the correction current according to the value of the correction current calculated by the microcomputer 2. A correcting device C is provided in the cathode ray tube and serves to correct an image displayed on the cathode ray tube on receipt of the correction currents from the drivers 3 to 7 and 22.

Abstract: A problem to be solved by the invention is to provide a digital convergence correction device capable of coping with variation in scanning frequency at a reasonable price. The digital convergence correction device comprises a gate circuit for storing a variation in each convergence correction amount in a memory as correction data, and reading out the correction data synchronously with screen scanning at the time of integrating the correction data and causing the output time to be constant for each of the correction data read out.

Abstract: A digital image correction device in which correction data at correction points corresponding one by one to positions on a CRT screen displayed by raster scanning system is stored as a relation pattern expressing the relative relation with the correction data of the adjacent correction point as one-bit data such as UP/DOWN, and on the basis of this relation pattern, a correction signal is generated for boosting, lowering or holding the voltage of the correction signal at each correction point as compared with the voltage at the adjacent correction point.

Abstract: A one bit type control waveform generation circuit reads out a byte data item of a byte data length from a memory addressed by a counted value obtained by a reference clock generated by a clock signal in synchronism with a synchronizing signal, and generates an optimum control waveforms to be used for CRT drivers by converting the readout data items per bit to analogue signals.

Abstract: A display unit comprises a video amplifying circuit for amplifying a video signal and outputting the amplified video signal to a cathode-ray tube, a sync separation circuit, a deflection circuit, a high-voltage circuit, a synchronizing signal control circuit for judging whether a synchronizing signal outputted from the sync separation circuit is present and outputting a signal indicative of the presence or absence of the synchronizing signal therefrom and having a synchronizing signal control switch for permitting the supply of an output indicative of the absence of the synchronizing signal at all times as needed, a power source control circuit for opening and closing a power source circuit in response to the output of the synchronizing signal control circuit and a power switch electrically connected to a power terminal.

Abstract: In a blanking die assembly for use with a punch press for cutting a sheet material along two spaced apart lines in each striking stroke, a conveyor is provided for conveying the upstream blanked sheet piece 17 out of the press, which comprises upper rolls 8 driven by a motor between upstream and downstream cutter units 3, 4; 5, 6, cooperating vertically movable lower rolls 9, and a control 12, 24, 25, 26, 27, 28 is provided for controlling the position of the lower rolls so that the upstream blanked sheet piece is sandwiched between the rolls 8, 9 to be conveyed after the striking stroke.