Diving computer

A method for operating a diving computer minimally comprising a timekeeping means for keeping the dive time, a measuring means for measuring diving information, a calculating means for processing diving information obtained from said measuring means, and a displaying means for displaying diving information obtained from the calculating means, this method comprising:

• a step of displaying skin diving depth from said depth information,
• a step of displaying scuba diving depth from said time information after display of the skin diving depth,
• a step of making a judgment as to whether or not it is a decompression dive condition based on a priorly established diving time information and dive depth information after displaying said scuba diving depth,
• a step of, in a case in which it is not a decompression dive condition, making a judgment as to whether or not said current diver's diving depth exceeds a priorly established depth value,
• a step of, in a case in which said current diver's depth exceeds the priorly established depth value, displaying a safety stop graph indicating safety stop information using as a reference line, a prescribed depth value in one region of said display means in order to indicate safety stop information,
• a step of performing a judgment, after said safety stop graph is displayed, of whether or not said diver's current depth information is within a prescribed depth showing a priorly prescribed allowable range with respect to said reference line and, in a case in which said diver is within said allowable range, continuing said safety stop graph display, but if said diver is not within said allowable range, returning to said step that performs a judgment as to whether or not said diver's dive is a decompression dive,
• in said step of making judgment of whether or not said diver's dive is a decompression dive, a step of, in a case in which said diver's current dive depth is a priorly established decompression depth value, displaying on a part of area of said display means a decompression stop graph indicating decompression stop information using as a reference line a prescribed decompression depth value,
• a step of comparing said diver's current depth with a priorly established decompression instruction depth,
• a step of, after display of said decompression stop graph, making a judgment as to whether or not said current diver's depth information is within a depth range indicated as a priorly established prescribed allowable range with respect to said reference line,
• a step of, in a case in which the diver is within said allowable range, making a judgment as to whether or not said diver has elapsed said decompression instruction, and
• a step of, in a case in which said diver's dive time has passed said decompression instruction time, making a judgment as to whether said diver's dive is a decompression dive.

A computer program executing a method for operating a diving computer minimally comprising a timekeeping means for keeping the dive time, a measuring means for measuring diving information, a calculating means for processing diving information obtained from said measuring means, and a displaying means for displaying diving information obtained from the calculating means, this computer program comprising:

• a step of displaying skin diving depth from said depth information,
• a step of displaying scuba diving depth from said time information after display of the skin diving depth,
• a step of making a judgment as to whether or not it is a decompression dive condition based on a priorly established diving time information and dive depth information after displaying said scuba diving depth,
• a step of, in a case in which it is not a decompression dive condition, making a judgment as to whether or not said current diver's diving depth exceeds a priorly established depth value,
• a step of, in a case in which said current diver's depth exceeds the priorly established depth value, displaying a safety stop graph indicating safety stop information using as a reference line, a prescribed depth value in one region of said display means in order to indicate safety stop information,
• a step of performing a judgment, after said safety stop graph is displayed, of whether or not said diver's current depth information is within a prescribed depth showing a priorly prescribed allowable range with respect to said reference line and, in a case in which said diver is within said allowable range, continuing said safety stop graph display, but if said diver is not within said allowable range, returning to said step that performs a judgment as to whether or not said diver's dive is a decompression dive,
• in said step of making judgment of whether or not said diver's dive is a decompression dive, a step of, in a case in which said diver's current dive depth is a priorly established decompression depth value, displaying on a part of area of said display means a decompression stop graph indicating decompression stop information using as a reference line a prescribed decompression depth value,
• a step of comparing said diver's current depth with a priorly established decompression instruction depth,
• a step of, after display of said decompression stop graph, making a judgment as to whether or not said current diver's depth information is within a depth range indicated as a priorly established prescribed allowable range with respect to said reference line,
• a step of, in a case in which the diver is within said allowable range, making a judgment as to whether or not said diver has elapsed said decompression instruction, and
• a step of, in a case in which said diver's dive time has passed said decompression instruction time, making a judgment as to whether said diver's dive is a decompression dive.