摘要:
A color chip construction (5) especially adapted for use in fabricating full-width arrays, in which the individual chip photosites consist of three complementary color (blue, green, and red) photodiodes (32, 34, 36) shaped and positioned to provide a rectangular photosite (12) with perpendicular edges that enhance butting of like color chips together to form full-width color arrays.
摘要:
photosensor array (28) includes two adjacent and parallel rows (30, 32) of photosensors deposited on a common substrate, the photosensors being spaced apart uniformly, with the two rows being staggered longitudinally by half a spacing so that light which would fall on the boundary between two sensors in one row falls directly on a sensor in the other row.
摘要:
A photosensitive imaging apparatus has a linear array of groups of photosensors. In a low-resolution scanning mode, all of the photosensors in each group act together as one large photosensor. In a high-resolution scanning mode, each photosensor in a group acts outputs image-based signals independently. In either mode, the signals output by the photosensors are transferred to one of two output lines, such as for "odd-" and "even-" positioned photosensors or groups of photosensors. The signals on the two lines can then be multiplexed to a single output line. The dual output lines enable fast signal output in either resolution mode.
a first photosensor (10A-10C); a first switching device (PDX), for accepting a signal from the first photosensor, the first switching device including a MOS device operating in a linear region; and a transfer device (20), downstream of the first switching device, the transfer device including at least one MOS device (T1,T2) operating in a subthreshold region.
摘要:
A CMOS-based photosensor array, having a plurality of photodiodes (10) therein, includes a spillover protection circuit (30) associated with each photodiode (10). The spillover protection circuit (30) causes a potential to be applied to a photodiode (10) in response to a charge spillover or "blooming" condition. The spillover protection device (30) is momentarily disabled whenever a bias charge (VFZ) is injected onto the photodiode (10) by the transfer circuit (12). Also, a reference voltage applied to the gate of a transistor forming the spillover protection device (30) is higher than a threshold voltage of the transistor but is lower than a sum of the threshold voltage and a maximum light-intensity signal from the photodiode (10).
摘要:
A CMOS-based photosensor array, having a plurality of photodiodes (10) therein, includes a spillover protection circuit (30) associated with each photodiode (10). The spillover protection circuit (30) causes a potential to be applied to a photodiode (10) in response to a charge spillover or "blooming" condition. The spillover protection device (30) is momentarily disabled whenever a bias charge (VFZ) is injected onto the photodiode (10) by the transfer circuit (12). Also, a reference voltage applied to the gate of a transistor forming the spillover protection device (30) is higher than a threshold voltage of the transistor but is lower than a sum of the threshold voltage and a maximum light-intensity signal from the photodiode (10).
摘要:
Sensor array architectures for both analog and digital sensor arrays adapted for single chip applications or abutment with other like arrays to form a composite scanning array, the architecture providing a sensor array (10) in which the array video signal processing circuits (38,40,42,44,50), clock circuits (60,70), etc. are integrated onto the same chip (19) as the sensor array (20) itself and dark reference sensors (20′) are located alongside of the image scanning sensors (20) to avoid gaps in the scan line when several sensor arrays are assembled together.
摘要:
A scanner-printer of the type that scans and prints in blocks, each block consisting of a preset number of image lines, in which the block of lines (SL n-2 to SL n+2 ) scanned by the scanning array is larger than the block of lines (SL n ) printed by a printing array so that there are provided additional image scan lines before and after each block of image lines printed, the additional image scan lines providing image context data for use in processing image signals adjacent the boundaries between blocks of image lines.
摘要:
photosensor array (28) includes two adjacent and parallel rows (30, 32) of photosensors deposited on a common substrate, the photosensors being spaced apart uniformly, with the two rows being staggered longitudinally by half a spacing so that light which would fall on the boundary between two sensors in one row falls directly on a sensor in the other row.