摘要:
A data processing apparatus includes a three input arithmetic logic unit (230) that generates a combination of the three inputs that is selected by a function signal. Data registers (200) store the three data inputs and the arithmetic logic unit output. The second input signal comes from a controllable barrel rotator (235). The rotate amount is a default rotate amount stored in a special data register, a predetermined set of bits of data recalled from a data register or zero. A one's constant source (236) is connected to the barrel rotator (235) to supply a multibit digital signal of "1". This permits generating a second input signal of the form 2.sup.N, with N being the rotate amount. The output of the barrel rotator (235) may be stored independently of the arithmetic logic unit (230) result. A controllable shifter is an alternative to the barrel rotator (235). The third input signal comes from a multiplexer (233) that selects between an instruction specified immediate field, data recalled from a data register or a mask input from a mask generator (239). One preferred form of the mask has a number of right justified 1's corresponding to a mask input signal. This mask input signal may be the default barrel rotate amount or a predetermined number of the least significant bits of a third input signal as selected by a multiplexer. A second preferred form of the mask is selected one of the left most 1, the right most 1, the left most bit change or the right most bit change of a predetermined set of the least significant bits of data recalled from a data register. In the preferred embodiment of this invention, the three input arithmetic logic unit (230) is embodied in a data processor circuits as a part of a multiprocessor integrated circuit (100) used in image processing.
摘要:
A data processing apparatus includes an arithmetic logic unit is divided into a plurality of sections. Each section generates at a corresponding output a digital resultant signal representing a combination of respective subsets of first and second multibit digital inputs. The arithmetic logic unit includes a status detector generating a single bit status signal indicative of said digital resultant signal of a corresponding section of the arithmetic logic unit. These single bit status signals are stored in predetermined locations within a multiple flags register. An options register stores an indication of the number of sections selected from a plurality of possible number of sections into which the arithmetic logic unit is divided. The arithmetic logic unit is further connected to the multiple flags register so that each section selects for output either corresponding bits of the first multibit digital input or the second multibit digital input dependent upon the digital state of a corresponding single status bit in the multiple flags register. This technique permits a variety of functions such as add with saturation, maximum, pixel transparency and color expansion.
摘要:
A method for processing video data to produce a progressively scanned signal from an input of conventional interlaced video. The data is received at a processor (1), used to determine a motion signal (26) over time between field of the data. The motion signal is filtered to reduce errors caused by noise-corrupted video sources and then further filtered to spread out the determined motion signal. Edge information (30) is located and combined with the motion signal to produce an integrated progressive-scan signal (36) for display on a video display device, producing images with sharper edges and motion signals which have a lower susceptibility to noise.
摘要:
A method and system for accentuating intense white display areas in sequential DMD video systems includes generating a special signal for each pixel that indicates whether to boost the intensity of that pixel in all colors. The method further includes enabling the mirrors to be turned on during times of color boundary of the color wheel such that DMD with mirrors receives different mixes of color light that are integrated together to produce intense white. The system may include degamma lookup tables for each color. The degamma lookup tables are augmented when the special signal is generated.
摘要:
A data processing apparatus includes a three input arithmetic logic unit (230) that generates a combination of the three inputs that is selected by a function signal. Data registers (200) store the three data inputs and the arithmetic logic unit output. The second input signal comes from a controllable barrel rotator (235). The rotate amount is a default rotate amount stored in a special data register, a predetermined set of bits of data recalled from a data register or zero. A one's constant source (236) is connected to the barrel rotator (235) to supply a multibit digital signal of "1". This permits generating a second input signal of the form 2.sup.N, with N being the rotate amount. The output of the barrel rotator (235) may be stored independently of the arithmetic logic unit (230) result. A controllable shifter is an alternative to the barrel rotator (235). The third input signal comes from a multiplexer (233) that selects between an instruction specified immediate field, data recalled from a data register or a mask input from a mask generator (239). One preferred form of the mask has a number of right justified 1's corresponding to a mask input signal. This mask input signal may be the default barrel rotate amount or a predetermined number of the least significant bits of a third input signal as selected by a multiplexer. A second preferred form of the mask is selected one of the left most 1, the right most 1, the left most bit change or the right most bit change of a predetermined set of the least significant bits of data recalled from a data register. In the preferred embodiment of this invention, the three input arithmetic logic unit (230) is embodied in a data processor circuits as a part of a multiprocessor integrated circuit (100) used in image processing.
摘要:
An SLM-based digital display system (10) having a graphics display subsystem (13 and 18) for closed captioning, on-screen displays, and other graphics images that are overlaid on the video image. The graphics display subsystem (13 and 18) has a graphics processor (21) that prepares the graphics data, which is inserted into the video data path after video data processing and prior to a look-up table unit (27). A select logic unit (24) provides a control signal to a multiplexer (26) that selects between video data and graphics data for input to the look-up table unit (27). The look-up table unit (27) performs its mapping according to the type of data received, such as by linearizing video data or palletizing graphics data.
摘要:
A method of encoding video display data, after that data has been previously converted from a film frame rate to a faster video frame rate, such as by 3:2 pulldown. The data is first re-converted to the film frame format, as progressive frames (21). This progressive frame data is processed to determine where scene cuts occur (22). The data is then encoded consistent with MPEG encoding techniques, but with the scene cut information being used to begin groups of pictures (GOPs) at scene cuts and to determine where intrapictures, predicted pictures, or interpolated pictures shall occur (23).
摘要:
A multi-format display system including hardware and algorithms for digital and High Definition Television. The system includes a light source (120), a tuner/preprocessor unit (114), a processor unit (116), a spatial light modulator (118), and a display surface (128). The processor unit can scale and format the data for a number of standardized-format video broadcast signals, and can perform additional interpolation to eliminate artifacts.
摘要:
A data processing device includes a memory, a control circuit, a guide table and an address generating circuit. The control circuit receives a packet transfer request and packet transfer parameters. The packet transfer parameters include a start address, dimension values defining a block of addresses, guide table having guide table entries and a table pointer. Each guide table entry has an address value. The table pointer initially points to a first guide table entry in the guide table. The address generating circuit forms a set of a block of addresses for memory access corresponding to each guide table entry, having a start address from a predetermined combination of the start address and the address value of the guide table entry. The block of addresses are formed from the dimension values. Following the memory accesses, the address generating circuit updates the table pointer to point to a next entry in the guide table. The address generating circuit may add the address value to the prior block starting address or add the guide table value to the starting address. The memory access may be a memory read from the block of addresses or a memory write to the block of addresses.
摘要:
An SLM-based video receiver (10) receives a video input on a field-by-field basis at a signal interface unit (11) and passes the input to a processor (12). The processor (12) performs analog-to-digital conversion if the pixel data is analog and also performs other enhancements to prepare the pixel data for loading into a video memory (14). Pixel data from the processor (12), representing a field of pixel data, is stored into the memory (14) for loading into rows of pixel elements of a spatial light modulator (16). The spatial light modulator (16) receives the pixel data in rows. The addressing functions of the spatial light modulator (16) are used to generate additional display rows of pixel data per field. Thus, the SLM-based video receiver (10) displays a video frame having more lines than the field of pixel data.