A portable display with larger digits is useful to give the
operator a quick survey of the instrument coordinates. The
display of the current coordinates on the video terminal
has the disadvantage that the position of the display screen
cannot arbitrarily be chosen and that the digits appear to
be relatively small with the standardized character size
generally used,
The outfit of the instruments made in Jena with operating
means is shown in Table 1.
4. Summary
Advances made in digital computer technology have now
rendered it possible to link photogrammetric data acquisition
systems with computers and peripheral units in such a way
that machine-readable data carriers for information transfer
become superfluous. The instrument manufacturers support this
tendency by the outfit of the measuring equipment with suit-
able coupling units and interfaces, the integration of
microcomputers in the measuring equipment and the supply of
software packages for the mainframe computer.
The software structure of the systems of JENOPTIK
JENA GmbH allows the combination of programs for built-in
microcomputers on PROMs with programs on diskettes or other
data carriers. Using as an example the KARTOFLEX map revi-
sion instrument, the ZIF 2 digitizer interface and the
digital drawing tables, we illustrated the conditions which
were taken into consideration in photogrammetric on-line
data processing. Apart from the real-time processes of data
acquisition, transformation and display, programs are used
for various calculations, before the data transfer into the
mainframe computer is performed.
For improving the working conditions of the operator addi-
tional operating means have been provided for the entry of
instructions into the computer. Large-format LED displays
facilitate the reading of the major measurement values.
Literature
/1/ Weibrecht, O.: Das Stecometer mit automatischer Regis-
triereinrichtung. Ein neues Datenverarbeitungssystem
für die analytische Photogrammetrie.
Vermessungstechnik 11(1963), pp. 385 - 390
/2/ Umezawa, Yamashita: A unique digital mapping utility
data management system developed in Japan
XV ISPRS Congress, Rio de Janeiro 1984, Pres.Paper.
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