JPH02141814U - - Google Patents

Description

[Brief explanation of drawings]

Figure 1 is a block circuit diagram to explain the functional system of the star sensor, Figure 2 is a diagram to explain center of gravity calculation, and Figures 3 to 7 are examples of the star sensor according to this invention. 3 is a diagram showing the configuration of the imaging section used in the same embodiment, and FIGS. 4 and 5 are diagrams for explaining the timing of pixel number compression in the same embodiment. FIG. 6 is a diagram for explaining the operation of the same embodiment when the vertical transfer CCD is driven in four phases, and FIG. 7 is a diagram showing the timing of the output of the imaging section and the output of the sample and hold circuit of the same embodiment. 11...Imaging section, 111...Photodiode section,
112...Vertical transfer CCD section, 113...Horizontal transfer C
CD section, 114...Readout circuit section, 12...Clock generator, 13...Horizontal driver circuit, 14...Horizontal pulse counter, 15...Vertical driver circuit, 16...Vertical pulse counter, 17, 18...X and Y direction Position information, 20...sample hold circuit, 21...A/
D converter, 22...Light intensity information, 24...Field shift pulse, 25, 26...Line shift pulse, 27...Horizontal transfer clock, 28...Reset pulse, φV...Vertical drive pulse, φH...Horizontal drive pulse, φRS...Reset signal.

Claims (1)

[Claims for Utility Model Registration] (1) A photoelectric conversion unit formed by arranging a plurality of same number of photoelectric conversion elements for multiple lines to form a light receiving surface, and photoelectric conversion units arranged vertically in this photoelectric conversion unit. A vertical transfer CCD section that takes in the accumulated charge of the element and transfers it to output, and a horizontal transfer C that takes in the transfer output of each column of this vertical transfer CCD section and transfers it to output.
In a stellar sensor having an imaging section consisting of a CD section and a readout circuit section that accumulates the transfer output of the horizontal transfer CCD section and reads out the potential to obtain an image signal, the charge of the photoelectric conversion element is transferred to the vertical transfer CCD.
Vertical pixel number compression means for compressing the number of pixels in the vertical direction by adding and combining a plurality of adjacent charges before being taken into the horizontal transfer CCD section, transferred to the horizontal transfer CCD section, and transferred and outputted to the readout circuit section. and horizontal pixel number compression means for compressing the number of pixels in the horizontal direction by adding and combining a plurality of adjacent charges before the potential is transferred from the horizontal transfer CCD section to the readout circuit section and read out. A stellar sensor that is characterized by: (2) The scope of the utility model registration claim, characterized in that the vertical pixel number compression means includes vertical transfer CCD section driving means for driving the vertical transfer CCD section so as to add and combine adjacent charges and transfer the resultant image. The stellar sensor described in item 1. (3) The imaging unit distinguishes the photoelectric conversion elements into odd lines and even lines, and arranges one vertical transfer CCD corresponding to two elements arranged vertically on the odd lines and even lines, and Transfer CCD
By switching between odd and even lines for each field, the charges accumulated in the photoelectric conversion elements are taken out and transferred vertically. The stellar sensor according to claim 2, which is a utility model, and is characterized in that the sensors are simultaneously captured and added and synthesized during vertical transfer. (4) The vertical pixel number compression means includes horizontal transfer CCD section driving means for driving the horizontal transfer CCD section so that transfer charges from the vertical transfer CCD section are accumulated for a plurality of lines and then transferred. A stellar sensor according to claim 1 of the utility model registration claim, characterized in that: (5) The horizontal pixel number compression means is a readout circuit section driving means for driving the readout circuit section so as to accumulate charges transferred from the horizontal transfer CCD section for a plurality of pixels, read out the potential thereof, and then reset the charge. A stellar sensor according to claim 1 of the utility model registration claim, characterized in that it is equipped with: