摘要:
An image processor containing an EPROM (38) stored with coefficient data for image enlargement and reduction, coefficient read controllers (40-44) for reading out coefficient data from the EPROM (38) according to an enlargement/reduction selection signal, a variable horizontal characteristic filter (16) for executing either image enlargement or image reduction according to the coefficient data, a variable vertical characteristic filter (18) also for executing either image enlargement or image reduction according to the coefficient data, a frame memory (20), a contour correcting circuit (14), and selectors (22-30). When image enlargement is selected by selectors (22-30), input video signals are processed by the contour correcting circuit (14), the frame memory (20), and the filters (16,18) in this order while, when image reduction is selected, input video signals are processed by the same in the reverse order. The portion which should not undergo contour enhancement does not undergo contour enhancement during image enlargement, and high frequency components enhanced by contour correction during image reduction do not disappear and adequate contour correction, even when either processing image enlargement or reduction, is selected.
摘要:
An image magnifying circuit is made up of a frame memory 12 for storing input image data, a coefficient memory 18 in which filter coefficients corresponding to a plurality of magnification ratios are stored, a non-linear magnification controller 20 for outputting an enable signal for reading the corresponding image data from the frame memory 12 and a coefficient selecting address AD3 for reading the corresponding filter coefficient from the coefficient memory 18, on the basis of an area width w predetermined to divide a display screen into n parts and a predetermined magnification for the n parts, and a filter 14 for filtering the image data from the frame memory 12 on the basis of the filter coefficients from the coefficient memory 18 to output the image data on the image which is non-linearly magnified in a horizontal direction. These filter coefficients correspond to the magnification ratio which are set for the n parts of the display screen.
摘要:
A disc inspecting method includes: forming recording marks on a disc; scanning the recording marks from inside to outside or from outside to inside of the disc by a pickup unit to read a reproduction signal while rotating a spindle to move a slider by each predetermined width; acquiring reproduction data from the reproduction signal in a signal acquiring unit; and determining whether or not the reproduction data is proper in a calculation unit, and optimizing a formation condition of the recording marks when it is determined that the reproduction data is not proper.
摘要:
Embodiments of the invention improve the efficiency of communication processing between a host and a storage device. In one embodiment, a data processing system includes a storage device and a host. The host gives the storage device an instruction to perform specified processing, and an instruction as to whether or not a completion notification of the instructed processing is to be transmitted to the host. If the host instructs the storage device to transmit a processing completion notification, the storage device transmits the completion notification to the host. On the other hand, if the host instructs the storage device not to transmit a processing completion notification, the storage device does not transmit the completion notification to the host.
摘要:
Embodiments of the invention improve utility of a magnetic disk drive in which a head is retracted if the magnetic disk drive is in a dropping state. In one embodiment, an HDC/MPU provided in a magnetic disk drive judges whether the magnetic disk drive is in a dropping state based on an output from an acceleration sensor which may detect an acceleration and performs a retraction operation of a head. After the HDC/MPU judges that a drop is occurring, the HDC/MPU detects whether the drop judgment is incorrect according to whether a shock sensor detects a shock occurrence and changes the drop judgment condition based on a detection history of detected incorrect judgments.
摘要:
The present invention relates to a signal shaping circuit which is capable of shaping a returning light signal of a modulated signal whose signal level and signal length are arbitrarily varied such that it can be demodulated. The shaped signal pattern generation circuit 15 has, in advance, variation pattern information with regard to a predetermined variation pattern to be applied on a returning light signal recorded therein. The counter 13 inputs a returning light signal, counts a signal length thereof and sends a count value to the shaped signal pattern generation circuit 15. An A/D conversion 14 detects a signal level of the returning light signal and sends the detected signal level to the shaped signal pattern generation circuit 15 in a similar way. The shaped signal pattern generation circuit 15 refers to the variation pattern information and calculates an optimum signal pattern corresponding to a signal length and a signal level of the inputted, returning light signal. The calculated shaped signal pattern is outputted to a shaped signal generation circuit 16. Based on the signal pattern, the shaped signal generation circuit 16 converts the returning light signal and generates an optimum shaped signal.
摘要翻译:信号整形电路技术领域本发明涉及一种信号整形电路,其能够对其信号电平和信号长度任意变化的调制信号的返回光信号进行整形,使得其可被解调。 成形信号图案生成电路15预先具有关于要记录在其中的返回光信号应用的预定变化图案的变化图案信息。 计数器13输入返回光信号,对其信号长度进行计数,并向成形信号图案生成电路15发送计数值。 A / D转换14检测返回光信号的信号电平,并以类似的方式将检测信号电平发送到成形信号模式产生电路15。 成形信号图案生成电路15参照变化图案信息,并计算与输入的返回光信号的信号长度和信号电平对应的最佳信号图案。 计算出的成形信号图案被输出到成形信号生成电路16。 成形信号生成电路16基于信号图案转换返回光信号,并生成最佳成形信号。
摘要:
Embodiments of the invention improve the efficiency of communication processing between a host and a storage device. In one embodiment, a data processing system includes a storage device and a host. The host gives the storage device an instruction to perform specified processing, and an instruction as to whether or not a completion notification of the instructed processing is to be transmitted to the host. If the host instructs the storage device to transmit a processing completion notification, the storage device transmits the completion notification to the host. On the other hand, if the host instructs the storage device not to transmit a processing completion notification, the storage device does not transmit the completion notification to the host.
摘要:
An additional information read/write system has an ID/additional information distributing apparatus, an ID postscribing apparatus, and a drive system. The ID/additional information distributing apparatus includes a managing unit for managing IDs postscribed to optical discs and additional information for updating content read from each of the optical discs and a distributing unit for distributing the IDs and the additional information corresponding to the IDs. The ID postscribing apparatus includes a transmitting and receiving unit and a writing unit. The drive system includes a transmitting and receiving unit for transmitting the IDs to the ID/additional information distributing apparatus and receiving the additional information, a writing unit for writing the additional information on a storage medium, and a playback unit for playing back the content updated based on the additional information from the storage medium.
摘要:
A contour emphasizing circuit in which VE detected by a vertical contour component detecting unit and HE detected by a horizontal contour component detecting unit are added by a first adder and then multiplied by a coefficient, and the product is added to an input video signal by a second adder to output an emphasized-contour video signal. The circuit contains a comparing/judging unit for comparing VE with HE and judging whether or not the absolute value of the difference between them is smaller than a present value S, and a coefficient change-over multiplier unit for changing the coefficient by which the sum (VE+HE) is multiplied over to K/2 or K according to the judging signal. For a pixel from which both HE and VE are detected, the coefficient change-over multiplier is changed from K or K/2 by a judgment signal of the comparing/judging unit to decrease the contour emphasizing component. This prevents excessive contour emphasis of the pixel from which both HE and VE are detected, and natural profile emphasis is carried out.
摘要:
In a display device in which each group of plural drive elements takes charge of the drive of plural picture elements (pixels) and the display luminance changes as the number of sustaining pulses changes that are supplied to a plasma display panel, a constant emission luminance characteristic is maintained by increasing the number of sustaining pulses for a larger load when the display load factor is large, and decreasing the number of sustaining pulses for a smaller load when the display load factor is small. When displaying a multi-tone image by a subfield drive method, a display area detect circuit allows the display of an image with constant luminance characteristic despite the variation of the display load factor, and prevents the deterioration of tone characteristic due to the subfield drive method, and further, a half tone display circuit allows the decrease of the bit number thereby simplifying the configuration of the display area detect circuit.