Apparatus and method for indicating when it is safe and unsafe to insert a memory cartridge into or remove a memory cartridge from a memory cartridge receiving device
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United States of America Patent
Stats
-
Jul 10, 1990
Grant Date -
N/A
app pub date -
May 22, 1989
filing date -
May 22, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus and method are provided for indicating when it is safe and unsafe to insert a memory cartridge into and remove a memory cartridge from a cartridge receiving device. In one embodiment, the cartridge receiving device includes at least one buffer for buffering information signals to be supplied to the memory cartridge althrough such buffer need not necessarily be located within said cartridge receiving device. The apparatus includes an indicator which is caused to assume a first state to indicate to a user that it is unsafe to insert the memory cartridge into or remove the memory cartridge from the receiving device when at least one of the two following conditions occurs: (1) an attempt is being made to write data to or read data from the memory cartridge, (2) at least one buffer is enabled at the same time the memory cartridge is not present in the receiving device.
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