Appeal No. 2004-1543 Page 8
Application No. 09/303,991
inter-leaving scheme is used to store the digital words output from the timing
section 64. Two memory arrays 82 and 84 are used so that a complete frame
can be stored in each. It is necessary to completely assemble a frame of video
before it can be read out. The two memory arrays 82 and 84 make it possible to
write to one memory array while reading from the other memory array and vice
versa. The parity select 88 determines when to write to or read from the memory
arrays 82 and 84. Hence, although twice as much memory is used, using two
memory arrays eliminates tearing of the composite image. A second advantage
to using two memory arrays is that the memory arrays 82 and 84 can be shared
with some type of processor such as an AT computer by using a bus 90. The
digital video data can then be taken out via the bus 90 and printed to a laser
printer or stored on an optical disc or used in any other digital image processing
device.
The final section of the scan converter 40 is the video out section 68. An
address generator 92 provides a global address for a single frame corresponding
to the composite video image 30. The address generator 92 also provides
refresh to the memory arrays 82 and 84. A sync generator 94 provides an
ultra-high-resolution sync signal for the single frame composite video image. It
will be understood that address generator 92, sync generator 94 and D/A
converter 98 are synchronized to the pixel clock of the high resolution video
display, which is at least four times as fast as the pixel clock 69. FIGS. 10a and
10b demonstrate the order in which the address generator 92 would generate
global addresses for outputting the digital video data stored in memory arrays 82
and 84 in order to produce the composite video image 30.
Higashitsutsumi's invention relates to a solid-state image pickup apparatus for
supplying a video signal to a display unit. The object of Higashitsutsumi's invention was
to eliminate the waste of the TV cameras in a solid-state image pickup apparatus and
simplify the circuits for connecting the TV cameras so as to greatly reduce the cost.
Figure 9 is a block diagram of an image pickup system using a plurality of solid-state
image pickup apparatuses which are connected together and the images of the
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Next
Last modified: November 3, 2007