Communications: directive radio wave systems and devices (e.g. – Testing or calibrating of radar system
Reexamination Certificate
2007-11-06
2007-11-06
Tarcza, Thomas H. (Department: 3662)
Communications: directive radio wave systems and devices (e.g.,
Testing or calibrating of radar system
C342S173000
Reexamination Certificate
active
11182516
ABSTRACT:
Provided is a RAM check unit capable of checking a RAM included in a radar system even when the radar system is in operation. An LSI instructs a high-frequency unit to output a radar-transmitted signal. When a radar-received signal is received from the high-frequency unit, calculation is performed based on the signal. The result of the calculation is transferred to a CPU. The CPU transmits a calculated distance to the outside. When a processing end sensing unit included in the LSI senses termination of radar-received signal processing, an RAM check unit initiates RAM check. When the RAM check is terminated, the high-frequency unit is instructed to output a radar-transmitted signal. Consequently, the RAM check is performed during a period between pieces of radar-received signal processing during which a load on the LSI is light. Thus, the RAM check can be performed even when the radar system is in operation.
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Ishikawa Yukio
Kamibayashi Teruhiko
Chen Shelley
Fogg & Powers LLC
Fujitsu Ten Limited
Taylor Gregory M.
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