Doorbell system, location notification system, and intercom system

Abstract

A doorbell system (1) includes a plurality of doorbells (2-1 to 2-n) each of which is attached to each residence and includes an operation unit (22) and a camera (26), and a control unit (4) capable of performing communication with the plurality of doorbells (2-1 to 2-n). The control unit (4) is configured to acquire position information of each of the plurality of doorbells (2-1 to 2-n) and an image captured by the camera (26), to generate target information about a target, based on the position information and the image, and to transmit the target information to an external device (3-1 to 30n) associated with a specific user.

1 . A location notification system comprising:
 a reading device that can read an identification signal from a transmitter associated with a target when the target approaches a predetermined distance; and   a control unit capable of performing communication with the reading device,   wherein the control unit is configured to acquire position information of the reading device and the identification signal read by the reading device, to generate target information about a target, based on the position information and the identification signal, and to transmit the target information to a first external device associated with a specific user associated with the target.   
     
     
         2 . The location notification system according to  claim 1 ,
 wherein the reading device is mounted to at least one of a doorbell attached to a residence, bending machines and security poles installed in various places in a region, and portable information terminals carried by persons.   
     
     
         3 . The location notification system according to  claim 1 ,
 wherein the transmitter comprises a portable tag having the identification signal or an information terminal in which the portable tag is incorporated.   
     
     
         4 . The location notification system according  claim 1 ,
 wherein the reading device is mounted to each of a plurality of doorbells each of which is attached to each residence, and   wherein the control unit transmits the target information to a second external device associated with a possessor of a doorbell located in a predetermined range from the target among the plurality of doorbells when the target information satisfies a predetermined condition.   
     
     
         5 . The location notification system according to  claim 4 ,
 wherein the predetermined condition comprises a case where the target does not pass a preset route.