Power saving control apparatus for simple electronic exchange system

• US 5,937,061 A
• Filed: 12/30/1996
• Issued: 08/10/1999
• Est. Priority Date: 12/30/1995
• Status: Expired due to Term

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Ki-Wook
• Primary Examiner(s): Zele, Krista
• Assistant Examiner(s): SAINT SURIN, JACQUES M
• Application Number:
  US08/777,767
• Time in Patent Office: 953 Days
• Field of Search: 379/413, 379/102.04, 379/156, 379/157, 379/201, 379/198, 379/233, 379/244, 379/161, 307/66, 455/563, 455/38.3, 320/2, 320/30, 320/15, 320/29
• US Class Current: 379/413
• CPC Class Codes: H04M 19/08 with current supply sources at the substations generating ringing current H04M19/04
• CPC Class Codes: H04M 9/003 Transmission of control signals from or to the key telephone set; signalling equipment at key telephone set, e.g. keyboard or display equipment keyboard equipment in semi-automatic systems H04M3/62
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

Power saving control apparatus and method for a simple electronic exchange system which may ensure the efficient system operation and reliably maintain the operation of the system by the usage of the electric power from an auxiliary AC power in consideration of battery power even after a main AC power is down. The power saving control apparatus for a simple electronic exchange system which is coupled to a plurality of extension telephones, each having a unit for transmitting a signal asking for setting or releasing a power saving mode and a unit for inputting passwords for each extension telephone, and operating from an auxiliary AC power when a main AC power is down, comprising: a memory for storing the passwords corresponding to the respective extension telephones; a unit for transmitting a signal requesting the input of the passwords to the extension telephones in response to a request for setting the power saving mode, which is received from an arbitrary extension telephone; a unit for checking if a password that is inputted from the extension telephone corresponds with an original password of the extension telephone previously registered in the memory; a unit for transmitting an operation limit command to the extension telephone when the two passwords are coincided with each other; and a unit for cutting off a call with the extension telephone until the power saving mode is changed for another mode when the two passwords are coincided with each other.

Claims

1. A power saving control apparatus for a simple electronic exchange system which is coupled to a plurality of extension telephones, each having a unit for transmitting a signal asking for setting or releasing a power saving mode and a unit for inputting passwords for each extension telephone, and operating from an auxiliary AC power when a main AC power is down, comprising:

a memory for storing said passwords corresponding to the respective extension telephones;

a unit for transmitting a signal requesting the input of said passwords to said extension telephones in response to a request for setting said power saving mode, which is received from an arbitrary extension telephone;

a unit for checking if a password that is inputted from said extension telephone corresponds with an original password of said extension telephone previously registered in said memory;

a unit for transmitting an operation limit command to said extension telephone when said two passwords are coincided with each other; and

a unit for cutting off a call with said extension telephone until said power saving mode is changed for another mode when said two passwords are coincided with each other.

2. The power saving control apparatus according to claim 1, further comprising:

a unit for sending out into a calling party, a message reporting that said extension telephone is in said power saving mode, if an incoming call is received to said extension telephone in which said power saving mode is set.

3. The power saving control apparatus according to claim 2, further comprising:

a unit for sending back a signal for revoking said operaticn limit command into said extension telephone upon receipt of a signal asking for releasing said power saving mode from said extension telephone, and for resetting a normal call service.

4. The power saving control apparatus according to claim 1, wherein said extension telephone which is equipped with a display unit, stops said display unit from being operated in response to said operation limit command.

5. The power saving control apparatus according to claim 4, further comprising:

a unit for sending back a signal for revoking said operation limit command into said extension telephone upon receipt of a signal asking for releasing said power saving mode from said extension telephone, and for resetting a normal call service.

6. The power saving control apparatus according to claim 1, further comprising:

a unit for sending back a signal for revoking said operation limit command into said extension telephone upon receipt of a signal asking for releasing said power saving mode from said extension telephone, and for resetting a normal call service.

7. A power management method for a simple electronic exchange system connected with a plurality of extension telephones and operating from an auxiliary AC power when a main AC power is down, comprising the steps of:

receiving a signal asking for setting a power saving mode of operation from a predetermined one of said extension telephones;

sending a request for password input into said extension telephone in order to establish said power saving mode of operation;

checking if a password that is input from said extension telephone corresponds with a previously-recorded password of said extension telephone;

transmitting an operation limit command to said extension telephone provided said two passwords correspond and cutting off a call incoming to the extension telephone until said power saving mode is changed into another mode; and

sending back a signal for revoking said operation limit command to said extension telephone upon receipt of a signal asking for releasing the power saving mode from said extension telephone, and for re-setting a normal call service.

8. The power management method according to claim 7, further comprising the step of;

sending out into a calling party a message reporting that said extension telephone is in said power saving mode, if an incoming call is received to said extension telephone in which said power saving mode is set.

9. The power management method according to claim 7, further comprising the step of:

sending a message of confirmation once said two passwords do not correspond.

10. A simple electronic exchange system, comprising:

a plurality of extension telephones, each having units for inputting a key for setting or releasing a power saving mode of said system, a unit for transmitting a signal asking for setting or releasing the power saving mode of operation in response to the key input, and a display unit for displaying messages or states of said system; and

a switching system operating from an auxiliary AC power when a main AC power is down, in response to a signal asking for setting said power saving mode from one of said extension telephones, sending back into said extension telephone a message of confirmation and a signal for stopping said display unit from operating, and cutting off a call incoming to said extension telephone until said power saving mode of operation is changed for another mode.

11. The simple electronic exchange system according to claim 10, further comprising:

a unit for sending out into a calling party a message reporting that said extension telephone is in said power saving mode, if an incoming call is received to said extension telephone in which said power saving mode is set.