摘要:
An apparatus and a method for receiving television signals can display a television signal of a novel signal format, even at a low cost, without addition of any hardware. The apparatus and a method for receiving a television signal employs a data input unit for receiving video data encoded by any one format among multiple kinds of encoding formats, a video data memory for storing the video data from the data input unit, a decoding process program memory for storing multiple kinds of decoding process programs for decoding processes corresponding to received video data having multiple kinds of encoding formats, a programmable logic device which can vary the hardware constitution for the decoding process, a logic device varying unit for varying the hardware constitution for the decoding process, a decoding control unit for varying the circuit constitution of the programmable logic device via the logic device varying unit depending on the encoding format of the input video data and decoding the video data stored in the video data memory into a video signal which may be displayed depending on the decoding process program, and a display for displaying the decoded video signal.
摘要:
An arrangement to automatically change between a scrambled digital data output and descrambled digital data output of a receiver by inserting a control signal conforming to a program provider's policy into a transmission signal. In a receiving side, a descrambler descrambles a channel-decoded signal, a demultiplexer demultiplexes the multiplexed signal from the descrambler into encoded video and audio data for output to a source decoder, and extracts the control information inserted in the transmitting side for output to a switch or CPU. The CPU decrypts a control signal from the control information extracted by the demultiplexer to determine whether the scrambled digital signal or descrambled digital signal is appropriate for output, and outputs a changeover control signal depending on the result of decryption. A switch selects the output of a scrambled digital signal from a stage prior to the descrambler, or a descrambled digital signal from a stage subsequent to the descrambler, depending on the changeover control signal from the CPU. Thereby, a scrambled digital signal output or descrambled digital signal output can automatically be changed over depending on a program provider's policy.
摘要:
To provide an image which is matched with an aspect ratio of a screen of a display unit by compressing and enlarging the whole of the image to a desired size. A video signal is sequentially written into a field memory in response to a write clock from an input terminal. A clock generating circuit supplies the field memory with a read clock having a frequency which is about 4/3 times as high as that of the write clock. A vertical enlargement control circuit reads a video signal from the field memory with a line period corresponding to a magnification factor and inhibits writing to a one-line memory with the same period to provide a line delayed output for an output signal from the field memory. A vertical interpolating circuit generates a scanning line signal by an interpolation operation in accordance with a control signal from the vertical enlargement control circuit.
摘要:
An image control apparatus includes a waveform equalizer, a distorted waveform extraction control unit, a noise reduction circuit, and an image quality control unit. The waveform equalizer receives an input video signal, equalizes the waveform of the video signal, and outputs the waveform equalized video signal. The distorted waveform extraction control unit detects a distorted waveform from the output of the waveform equalizer and controls the waveform equalizer to perform waveform equalization suitable for the input video signal. It also controls the noise reduction circuit and the image quality control unit in accordance with changes in the frequency characteristic of the video signal before and after waveform equalization to intensify the noise reduction for degrading the image quality, when the high frequency band of the frequency characteristic of the input signal has been lowered, and, conversely, to debilitate or stop the noise reduction for enhancing the image quality, when the high frequency band has been raised.
摘要:
A television signal receiving apparatus and method is provided having channel decode means for receiving a signal with a video signal, a sound signal, a data signal, and additional data multiplexed to perform tuning, demodulation, and error correction on the received signal and a demultiplexor for separating the multiplexed signal to output coded data of each of the video signal, the sound signal, and the data signal and for extracting service information as one of additional data. A storage device is provided for storing the service information extracted from the demultiplexor, together with a write controller for controlling writing into the storage device, and a read controller for controlling reading of the storage device according to a user command entered by a user. A source decoder is also provided for decoding the coded data outputted from the demultiplexor using the information outputted from said storage device to output the video signal, the sound signal, and the data signal. The storage device records the service information supplied from the demultiplexor, and the read controller performs control such that necessary data are read from the storage device as required by the user, thereby enhancing the speed of processing associated with the service information to provide a quick response to the user requirement. Also, the write controller can control storage such that only necessary information for the next processing operation is stored, thereby reducing the size of the storage device which is necessary.
摘要:
A motion detector for a chrominance signal which is used with a TV receiver equipped with a video signal motion detector. This motion detector for a chrominance signal has a delay element for delaying the chrominance signal of a video signal by 1 frame period, a subtractor for subtracting the output signal of the delay element from the input signal thereof, an absolute value conversion circuit to which the output signal from the subtractor is inputted, and a smoother circuit to which the output signal from the absolute value conversion circuit is supplied. If the chrominance signals of video signals on two consecutive frames are the same, the output signal of the subtractor becomes zero. If the chrominance signals of video signals on two consecutive frames are different, the output signal of the substractor takes a positive or negative value. The negative value signal is converted into a positive value signal by the absolute value conversion circuit. A signal is outputted from the smoother circuit only when the chrominance signals of video signals on two consecutive frames are different. This outputted signal is a chrominance signal motion detection signal. The luminance signal contained in a video signal is removed from the video signal using a comb-type filter.
摘要:
A motion detector for a chrominance signal which is used with a TV receiver equipped with a video signal motion detector. This motion detector for a chrominance signal has a delay element for delaying the chrominance signal of a video signal by 1 frame period, a subtracter for subtracting the output signal of the delay element from the input signal thereof, an absolute value conversion circuit to which the output signal from the subtracter is inputted, and a smoother circuit to which the output signal from the absolute value conversion circuit is supplied. If the chrominance signal of video signals on two consecutive frames are the same, the output signal of the subtracter becomes zero. If the chrominance signals of video signals on two consecutive frames are different, the output signal of the subtracter takes a positive or negative value. The negative value signal is converted into a positive value signal by the absolute value conversion circuit. A signal is outputted from the smoother circuit only when the chrominance signals of video signals on two consecutive frames are different. This outputted signal is a chrominance signal motion detection signal.The luminance signal contained in a video signal is removed from the video signal using a comb-type filter.
摘要:
An angiogenesis regulating composition used to treat/prevent an angiogenic disease in a subject, that contains in an effective amount at least one of nitrate, nitrite, and a compound convertible into nitrate or nitrite after the compound is absorbed into the subject, and an angiogenesis regulation method administering to a subject a composition containing as an active ingredient at least one of nitrate, nitrite, and a compound convertible into nitrate or nitrite after the compound is absorbed into the subject, provide a composition effective in treating and preventing angiogenic diseases, that can medically control angiogenic diseases, and medically regulate angiogenesis in ophthalmologic diseases in particular, and allows treatment without inhibiting physiological neovascularization, with a limited side effect and significantly safely, and an angiogenesis regulation method using the same.
摘要:
It is intended to provide a simple normal-tension glaucoma model capable of spontaneously, age-dependently and surly developing conditions similar to symptoms of normal-tension glaucoma which occurs more frequently in elder people, and a method of evaluating therapeutic effect on normal-tension glaucoma whereby a drug useful in treating and diagnosing can be conveniently screened by using the normal-tension glaucoma model. A normal-tension glaucoma model comprising a nonhuman mammal, which is deficient in a transcriptional regulator NF-κBp50 and thus spontaneously develops the normal-tension glaucoma symptom age-relatedly, an organ or a tissue thereof or cells collected from any of the same. A method of evaluating therapeutic effect on normal-tension glaucoma of a test substance which comprises administering or adding the test substance to the above-described nonhuman mammal, an organ or a tissue thereof or cells collected from any of the same, and measuring a morphological defect, cell count, pressure, the expression amount or activity strength of a protein, the expression amount of a nucleic acid and/or the activity strength of an antibody in the organ, tissue and/or cells as indication(s) for the evaluation.
摘要:
In a motion-adaptive television signal processor, a field as a reference for a moving picture signal includes a signal delayed by a frame memory or a field memory. A non-standard signal is beforehand processed so as to separate Y and C signals, and the signal thus processed is input to a motion-adaptive processor to thereby reduce a deviation in center of gravity between a still picture signal and a moving picture signal on the timebase to thereby suppress unnatural motion of the picture.