US4984263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Break-in method in a key system
Assignee: Samsung Electronics Co Ltd
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Filing: 1989-06-29
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Granted: 1991-01-08
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Expires: 2009-06-29
Abstract
Abstract A break-in method and a circuit in a key system for switching a key system to a conference-call state by use of a conference-call circuit is disclosed in the invention. In the break-in method, when an attendant perceives a telephone subscriber on the line, the attendant breaks in forcefully upon the subscriber's call currently on the line, changing the present call to a conference call. Thereafter, if the attendant hangs on the phone, the subscriber having waited for being switched breaks into the conference-call replacing the attendant. To achieve the improved method the inventive subject includes: a microprocessor MPU for controlling the key system; a subscriber circuit SBC for interfacing a state of an extension-line subscriber ST1 to STn with a main system 100; an office line circuit OLC for interfacing office-line codes Co1, Co2 with the main system 100; a switching circuit S/W for providing and switching a line controlling under control microprocessor MPU; a conference-call circuit CFC for providing telephone subscribers with the conference-call operation by means of controlling microprocessor MPU; and a memory MRY for reading and writing data by controlling under control microprocessor MPU.
Inventors
- 👤 Jin-Pyo Eun
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:48
CPC Classifications
H; H04; H04M; H04M3/00; H04M3/42; H04M3/56; H04M3/20; H04M3/60; H04M9/00; H04M9/002; H04M9/005
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
371 words
A break-in device for use in a key-phone system, comprising: microprocessor means for controlling a key system; subscriber circuit means for interfacing a state of an extension-line subscriber with a main system; office line circuit means for interfacing office-lines with the main system: switching means for, under control of said microprocessor, providing and switching extension-line subscribers; conference-call circuit means for providing telephone subscribers with conference-call operation by providing a plurality of conference-call circuits under control of said microprocessor; and memory means for reading and writing data under control of said microprocessor, and storing current call states of each of said extension-line subscribers; whereby said microprocessor, in response to a break-in key input; confirms after reception of said break-in key input, whether a current call by a first party is in a normal-call state when a call is made from an attendant telephone to the first party while a telephone line used by the first party is in a busy state; executes an error service when the current call is not in a normal-call state; determines from said memory means whether one of said conference call circuits is not in current use; controls said conference call circuit means and said switching means to designate one of said conference-call circuits as an allocated circuit for a first one of said extension-line subscribers when said current call is in a normal-call state; intervenes into a break-in state by breaking into a call between the first party and a second party with a conference-call connecting said first one of said extension-line subscribers with said first party and said second party through the allocated circuit; checks when the attendant telephone is in a hang-on state, whether a reserved subscriber is present, breaks into the present conference-call state when the reserved subscriber is present, and returns both the attendant telephone and reserved subscriber to a normal-call state when the reserved subscriber is present; and checks for break-in key input when the attendant telephone is not in a hang-on state, and upon reception of break-in key input, returns the other party's call to the previous normal-call state, and if there is no break-in key, and checks continuously the attendant hang-on state during an absence of break-in key input.
Claim 2
Dependent Claim
371 words
A break-in device for use in a key-phone system, comprising: microprocessor means for controlling a key system; subscriber circuit means for interfacing a state of an extension-line subscriber with a main system; office line circuit means for interfacing office-lines with the main system: switching means for, under control of said microprocessor, providing and switching extension-line subscribers; conference-call circuit means for providing telephone subscribers with conference-call operation by providing a plurality of conference-call circuits under control of said microprocessor; and memory means for reading and writing data under control of said microprocessor, and storing current call states of each of said extension-line subscribers; whereby said microprocessor, in response to a break-in key input; confirms after reception of said break-in key input, whether a current call by a first party is in a normal-call state when a call is made from an attendant telephone to the first party while a telephone line used by the first party is in a busy state; executes an error service when the current call is not in a normal-call state; determines from said memory means whether one of said conference call circuits is not in current use; controls said conference call circuit means and said switching means to designate one of said conference-call circuits as an allocated circuit for a first one of said extension-line subscribers when said current call is in a normal-call state; intervenes into a break-in state by breaking into a call between the first party and a second party with a conference-call connecting said first one of said extension-line subscribers with said first party and said second party through the allocated circuit; checks when the attendant telephone is in a hang-on state, whether a reserved subscriber is present, breaks into the present conference-call state when the reserved subscriber is present, and returns both the attendant telephone and reserved subscriber to a normal-call state when the reserved subscriber is present; and checks for break-in key input when the attendant telephone is not in a hang-on state, and upon reception of break-in key input, returns the other party's call to the previous normal-call state, and if there is no break-in key, and checks continuously the attendant hang-on state during an absence of break-in key input.
Claim 3
Dependent Claim
276 words
A break-in method for use in a key-phone system having an attendant telephone system, said method comprising: a normal-call checking process for confirming whether a current call is a normal-call while hearing a busy tone, when a call is made from an attendant telephone to an extension-line telephone while the extension-line telephone is in a busy state, or the current call from the attendant telephone needs switching; a conference-call allocation process for executing an error service when the result of said checking process is not in a normal-call state, and allocating a conference-call circuit when said result is in a normal-call state, after checking whether there is a conference-call circuit available; a break-in intervention process for intervening into a break-in state by breaking into another party's call with a conference-call through the allocated conference-call circuit in said allocation process; an attendant hang-on detection process for checking if the attendant telephone is in a hang-on state in said break-in intervention process; a first process for checking if a reserved subscriber is present, when the attendant telephone is in a hang-on state according to said hang-on detection process, breaking into the present conference-call state when the reserved subscriber is present, and returning both the attendant telephone and subscriber to a previous normal-call state when the reserved subscriber is present; and a second process for checking the break-in key input when the attendant telephone is not in a hang-on state in said attendant hang-on detection process, and if there is a break-in key input, returning the call with the other party to the previous normal-call state, if there is no break-in key input, checking continuously the attendant hang-on state.
Claim 4
Dependent Claim
276 words
A break-in method for use in a key-phone system having an attendant telephone system, said method comprising: a normal-call checking process for confirming whether a current call is a normal-call while hearing a busy tone, when a call is made from an attendant telephone to an extension-line telephone while the extension-line telephone is in a busy state, or the current call from the attendant telephone needs switching; a conference-call allocation process for executing an error service when the result of said checking process is not in a normal-call state, and allocating a conference-call circuit when said result is in a normal-call state, after checking whether there is a conference-call circuit available; a break-in intervention process for intervening into a break-in state by breaking into another party's call with a conference-call through the allocated conference-call circuit in said allocation process; an attendant hang-on detection process for checking if the attendant telephone is in a hang-on state in said break-in intervention process; a first process for checking if a reserved subscriber is present, when the attendant telephone is in a hang-on state according to said hang-on detection process, breaking into the present conference-call state when the reserved subscriber is present, and returning both the attendant telephone and subscriber to a previous normal-call state when the reserved subscriber is present; and a second process for checking the break-in key input when the attendant telephone is not in a hang-on state in said attendant hang-on detection process, and if there is a break-in key input, returning the call with the other party to the previous normal-call state, if there is no break-in key input, checking continuously the attendant hang-on state.
Claim 5
Dependent Claim
223 words
A key-phone break-in device, comprising: interfacing means for providing office-line codes of office lines and states of extension-lines to a main telephone system; means for switching said extension lines; circuit means for providing a plurality of conference-call circuits for the extension-lines; and means for controlling said interfacing means, switching means and circuit means in response to said office-line codes and states of the extension-lines, to enable said conference-call operation by, in response to a reception of break-in key input: confirming after reception of said break-in key input, whether a current call by a first party is in a normal-call state when a call is made from an attendant telephone to the first party while a telephone line used by the first party is in a busy state; executing an error service when the current call is not in a normal-call state; determining whether one of said conference call circuits is not in current use; controlling said switching means and circuit means to designate one of said conference-call circuits as an allocated circuit for a first one of said extension-lines when said current call is in a normal-call state; and intervening into a call between the first party and a second party with a conference-call connecting said first one of said extension-lines with said first party and said second party through the allocated circuit.
Claim 6
Dependent Claim
223 words
A key-phone break-in device, comprising: interfacing means for providing office-line codes of office lines and states of extension-lines to a main telephone system; means for switching said extension lines; circuit means for providing a plurality of conference-call circuits for the extension-lines; and means for controlling said interfacing means, switching means and circuit means in response to said office-line codes and states of the extension-lines, to enable said conference-call operation by, in response to a reception of break-in key input: confirming after reception of said break-in key input, whether a current call by a first party is in a normal-call state when a call is made from an attendant telephone to the first party while a telephone line used by the first party is in a busy state; executing an error service when the current call is not in a normal-call state; determining whether one of said conference call circuits is not in current use; controlling said switching means and circuit means to designate one of said conference-call circuits as an allocated circuit for a first one of said extension-lines when said current call is in a normal-call state; and intervening into a call between the first party and a second party with a conference-call connecting said first one of said extension-lines with said first party and said second party through the allocated circuit.
Claim 7
Dependent Claim
223 words
A break-in method for use in a key phone system having an attendant telephone system, said method comprising: confirming whether a current call is in a normal-call state when a call is made from an attendant telephone to an extension-line telephone while the extension-line telephone is in a busy state, or the current call from the attendant telephone needs switching; executing an error service when the current call is not in a normal-call state, and allocating a conference-call circuit when said current call is in a normal-call state, after checking whether there is a conference-call circuit available; intervening into a break-in state by breaking into another party's call with a conference-call through the allocated conference-call circuit and checking if the attendant telephone is in a hang-on state; checking if a reserved subscriber is present when the attendant telephone is in a hang-on state, breaking into the present conference-call state when the reserved subscriber is present, and returning both the attendant telephone and subscriber to a previous normal-call state when the reserved subscriber is present; and checking the break-in key input when the attendant telephone is not in a hang-on state, and, if there is a break-in key input, returning the call with the other party to the previous normal-call state, if there is no break-in key input, checking continuously the attendant hang-on state.
Claim 8
Dependent Claim
223 words
A break-in method for use in a key phone system having an attendant telephone system, said method comprising: confirming whether a current call is in a normal-call state when a call is made from an attendant telephone to an extension-line telephone while the extension-line telephone is in a busy state, or the current call from the attendant telephone needs switching; executing an error service when the current call is not in a normal-call state, and allocating a conference-call circuit when said current call is in a normal-call state, after checking whether there is a conference-call circuit available; intervening into a break-in state by breaking into another party's call with a conference-call through the allocated conference-call circuit and checking if the attendant telephone is in a hang-on state; checking if a reserved subscriber is present when the attendant telephone is in a hang-on state, breaking into the present conference-call state when the reserved subscriber is present, and returning both the attendant telephone and subscriber to a previous normal-call state when the reserved subscriber is present; and checking the break-in key input when the attendant telephone is not in a hang-on state, and, if there is a break-in key input, returning the call with the other party to the previous normal-call state, if there is no break-in key input, checking continuously the attendant hang-on state.
Claim 9
Dependent Claim
228 words
A break-in method of use in a key-phone system having an attendant telephone system, said method comprising: confirming whether a current call is in a normal-call state when a call is made from an attendant telephone to an extension-line telephone while the extension-line telephone is in a busy state, or the current call from the attendant telephone needs switching; executing an error service when the current call is not in a normal call state, and allocating a conference-call circuit when said current call is in a normal-call state, after checking whether there is a conference-call circuit available; intervening into a break-in state by breaking into another party's call with a conference-call through the allocated conference-call circuit and checking if the attendant telephone is in a hang-on state; checking if a reserved subscriber is present when the attendant telephone is in a hang-on state, breaking into the present conference-call state when a reserved subscriber is present, and returning both the attendant telephone and subscriber to a previous normal-call state when the reserved subscriber is present; and a second process for checking the break-in key input when the attendant telephone is not in a hang-on state, and if there is a break-in key input, returning the call with the other party to the previous normal call state, if there is no break-in key input, checking continuously the attendant hang-on state.
Claim 10
Dependent Claim
228 words
A break-in method of use in a key-phone system having an attendant telephone system, said method comprising: confirming whether a current call is in a normal-call state when a call is made from an attendant telephone to an extension-line telephone while the extension-line telephone is in a busy state, or the current call from the attendant telephone needs switching; executing an error service when the current call is not in a normal call state, and allocating a conference-call circuit when said current call is in a normal-call state, after checking whether there is a conference-call circuit available; intervening into a break-in state by breaking into another party's call with a conference-call through the allocated conference-call circuit and checking if the attendant telephone is in a hang-on state; checking if a reserved subscriber is present when the attendant telephone is in a hang-on state, breaking into the present conference-call state when a reserved subscriber is present, and returning both the attendant telephone and subscriber to a previous normal-call state when the reserved subscriber is present; and a second process for checking the break-in key input when the attendant telephone is not in a hang-on state, and if there is a break-in key input, returning the call with the other party to the previous normal call state, if there is no break-in key input, checking continuously the attendant hang-on state.
Claim 11
Dependent Claim
211 words
A break-in method for use in a key-phone system having an attendant telephone system, said method comprising: confirming whether a current call is in a normal-call state when a call is made from an attendant telephone to an extension-line telephone while the extension-line telephone is in a busy state, or the current call from the attendant telephone needs switching; executing an error service when the current call is not in a normal call state, and allocating a conference-call circuit when said current call is in a normal-call state, after checking whether there is a conference-call circuit available; intervening into a break-in state by breaking into another party's call with a conference-call through the allocated conference-call circuit and checking if the attendant telephone is in a hang-on state; checking if a reserved subscriber is present when the attendant telephone is in a hang-on state, breaking into the present conference-call state when the reserved subscriber is present, and returning both the attendant telephone and subscriber to a previous normal-call state when the reserved subscriber is present; and checking the break-in key input when the attendant telephone is not in a hang-on state, and, if there is a break-in key input, returning the call with the other party to the previous normal call state.
Claim 12
Dependent Claim
211 words
A break-in method for use in a key-phone system having an attendant telephone system, said method comprising: confirming whether a current call is in a normal-call state when a call is made from an attendant telephone to an extension-line telephone while the extension-line telephone is in a busy state, or the current call from the attendant telephone needs switching; executing an error service when the current call is not in a normal call state, and allocating a conference-call circuit when said current call is in a normal-call state, after checking whether there is a conference-call circuit available; intervening into a break-in state by breaking into another party's call with a conference-call through the allocated conference-call circuit and checking if the attendant telephone is in a hang-on state; checking if a reserved subscriber is present when the attendant telephone is in a hang-on state, breaking into the present conference-call state when the reserved subscriber is present, and returning both the attendant telephone and subscriber to a previous normal-call state when the reserved subscriber is present; and checking the break-in key input when the attendant telephone is not in a hang-on state, and, if there is a break-in key input, returning the call with the other party to the previous normal call state.
References Cited (Backward Citations)
US4821316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-01-07 | 1994-07-09 | 1995-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-07 | 1998-07-09 | 1999-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-07 | 2002-07-09 | 2003-01-08 | $7700.00 | Window Closed / Lapsed |