Digital recorder, monitoring system, remote monitoring system, monitor image retrieval method, remote image reproduction method, recording medium and computer data signal

A digital recorder comprising;

• a camera which captures a monitor image and which is arranged in a predetermined position;
• a data recorder which records said monitor image captured by said camera;
• a read buffer which sequentially reads out said monitor image recorded on said data recorder;
• an operating apparatus which specifies at least an area within said monitor image read out by said reading buffer;
• a process controller which retrieves a monitor image which is in motion within the area specified by said operating apparatus, referring from said monitor image sequentially read out by said read buffer;
• and
• a display apparatus which displays said monitor image retrieved by said process controller.

A monitoring system comprising:

• a recorder which records a monitor image captured by a camera arranged in a predetermined position;
• a reading device which sequentially reads out said monitor image recorded on said recorder;
• an area specifying device which specifies at least an area within said monitor image read out by said reading device;
• a retrieving device which retrieves a monitor image which is in motion within said area specified by said area specifying device, referring from said monitor image sequentially read out by said reading device;
• and
• a reproduction device which reproduces said monitor image retrieved by said retrieving device.

A monitoring system comprising:

• a data recorder which records a monitor image which is captured by a camera arranged in a predetermined position;
• a read buffer which sequentially reads out said monitor image recorded on said data recorder;
• an operating apparatus which specifies at least an area in said monitor image read out by said read buffer;
• a process controller which retrieves a monitor image which is in motion in the area specified by said operating apparatus, referring from said monitor image sequentially read out said read buffer;
• and
• a display apparatus which displays said monitor image retrieved by said process controller.

A monitor image retrieval method comprising:

• a recording step of recording a monitor image captured by a camera arranged in a predetermined position;
• a reading step of sequentially reading out said monitor image recorded in said recording step;
• an area specifying step of specifying at least an area of said monitor image read out in said reading step;
• a retrieving step of retrieving a monitor image which is in motion in said area specified in said area specifying step referring from said monitor image sequentially read out by said reading step;
• and
• a reproducing step of reproducing said monitor image retrieved in said retrieving step.

A recording medium which is a computer readable medium recording a program for executing a computer as a monitoring system, said medium recording said program for executing

• a recording step of recording a monitor image which is captured by a camera arranged in a predetermined position;
• a reading step of sequentially reading out said monitor image recorded in said recording step;
• an area specifying step of specifying at least an area of said monitor image recorded in said reading step;
• a retrieving step of retrieving a monitor image which is in motion in the area specified in said area specifying step, referring from said monitor image sequentially read out by said reading step;
• and
• a reproducing step of specifying said monitor image retrieved in said retrieving step.

A computer data signal embedded in a carrier wave and representing a instruction sequence for executing a computer as a monitoring system, said computer data signal allowing the computer to execute:

• a recording step of recording a monitor image which is captured by a camera arranged in a predetermined position;
• a reading step of sequentially reading out said monitor image recorded in said recording step;
• an area specifying step of specifying at least an area in said monitor image which is read out in said reading step;
• a retrieving step of retrieving a monitor image which is in motion within the area specified in the area specifying step, referring from said monitor image sequentially read out by said reading step;
• and
• a reproducing step of reproducing said monitor image retrieved in said retrieving step.