Patent US4996708A successfully refreshed from Google Patents.
US4996708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Key telephone system adapted to respond to information stored in a portable outpulser
Assignee: Canon Inc
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Filing: 1989-08-07
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Granted: 1991-02-26
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Expires: 2009-08-07
Abstract
Abstract There is provided a key telephone system for transmitting and receiving a dial number by a peculiar control signal between a main unit and an extension telephone. The system comprises: an extension telephone; a main unit; an analyzing unit for analyzing an audio signal; and a calling unit for calling in accordance with the result by the analysis of the analyzing means. The calling unit generates a dial pulse. When a calling request from the extension telephone is detected, the main unit connects the extension telephone and the analyzing unit. Information generated by an electronic apparatus via which the dial number can be independently registered from an extension telephone of the KTs is analyzed and calling or displaying can be executed.
Inventors
- 👤 Katsuhiro Kakizawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:40
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/26; H04M1/27; H04M1/272; H04M1/2725; H04M9/00; H04M9/002; H04M9/005
Claims Analysis
Total Claims: 60
Claim 1
Independent Claim
142 words
A key telephone system comprising: a plurality of extension telephones; and a main unit, wherein said main unit has an extension interface for connecting said plurality of extension telephones, an external interface for connecting a plurality of external lines, switching means for connecting said plurality of extension telephones with said plurality of external lines, audio analyzing means for analyzing audio signals from said plurality of extension telephones, data analyzing means for analyzing data signals from said plurality of extension telephones, and calling means for sending a calling signal to one of said plurality of external lines in accordance with results of analysis of said audio and data analyzing means, wherein said switching means connects one of said extension telephones which outputs the audio or data signal with the one of said external lines to which said calling means sent the calling signal.
Claim 2
Dependent Claim
142 words
A key telephone system comprising: a plurality of extension telephones; and a main unit, wherein said main unit has an extension interface for connecting said plurality of extension telephones, an external interface for connecting a plurality of external lines, switching means for connecting said plurality of extension telephones with said plurality of external lines, audio analyzing means for analyzing audio signals from said plurality of extension telephones, data analyzing means for analyzing data signals from said plurality of extension telephones, and calling means for sending a calling signal to one of said plurality of external lines in accordance with results of analysis of said audio and data analyzing means, wherein said switching means connects one of said extension telephones which outputs the audio or data signal with the one of said external lines to which said calling means sent the calling signal.
Claim 3
Dependent Claim
14 words
A system according to claim 1, wherein said calling means generates a dial pulse.
Claim 4
Dependent Claim
29 words
A system according to claim 1, wherein when a calling request from said extension telephone is detected, said main unit connects the extension telephone and said audio analyzing means.
Claim 5
Dependent Claim
20 words
A system according to claim 1, wherein said audio analyzing means analyzes the audio signal input from said extension telephone.
Claim 6
Dependent Claim
32 words
A system according to claim 1, wherein said extension telephone generates a signal in accordance with a key operation, and said data analyzing means analyzes a control signal from said extension telephone.
Claim 7
Dependent Claim
82 words
A key telephone system comprising: an electronic apparatus which can store a telephone number and from which the stored telephone number can be read out and used at any time; an extension telephone; a main unit; receiving means for receiving information generated by said electronic apparatus; calling means for calling in accordance with the information received by said receiving means; and alarm means for generating an alarming when said receiving means does not receive the information within a predetermined period of time.
Claim 8
Dependent Claim
82 words
A key telephone system comprising: an electronic apparatus which can store a telephone number and from which the stored telephone number can be read out and used at any time; an extension telephone; a main unit; receiving means for receiving information generated by said electronic apparatus; calling means for calling in accordance with the information received by said receiving means; and alarm means for generating an alarming when said receiving means does not receive the information within a predetermined period of time.
Claim 9
Dependent Claim
36 words
A system according to claim 6, wherein said electronic apparatus further can store additional valuable information such as a schedule and the like and can read out and use said additional valuable information at any time.
Claim 10
Dependent Claim
19 words
A system according to claim 6, wherein said receiving means receives a voice sound generated by said electronic apparatus.
Claim 11
Dependent Claim
14 words
A system according to claim 6, wherein said main unit includes said receiving means.
Claim 12
Dependent Claim
14 words
A system according to claim 6, wherein said main unit includes said calling means.
Claim 13
Dependent Claim
14 words
A system according to claim 6, wherein said calling means generates a dial pulse.
Claim 14
Dependent Claim
20 words
A system according to claim 6, wherein said main unit connects and disconnects said extension telephone and an external line.
Claim 15
Dependent Claim
28 words
A system according to claim 6, wherein, when a calling request from said extension telephone is detected, said main unit connects the extension telephone and said receiving means.
Claim 16
Dependent Claim
19 words
A system according to claim 9, wherein said receiving means receives the audio signal input from said extension telephone.
Claim 17
Dependent Claim
20 words
A system according to claim 6, wherein said main unit transmits and receives a control signal from/to said extension telephone.
Claim 18
Dependent Claim
149 words
A key telephone system comprising: a plurality of extension telephones; a main unit; a first communication path for allowing said main unit to receive audio signals from said extension telephones; and a second communication path for allowing said main unit to receive control signals from said extension telephone, wherein said main unit has first analyzing means for analyzing the audio signals received from said first communication path, second analyzing means for analyzing the control signals received from said second communication path, switching means for connecting said first communication path with selected one of external lines and said first analyzing means, and calling means for calling in accordance with the results of the analysis performed by said first and second analyzing means, wherein said switching means connects said first communication path with said first analyzing means when calling, and connects said first communication path with the external line after calling.
Claim 19
Dependent Claim
149 words
A key telephone system comprising: a plurality of extension telephones; a main unit; a first communication path for allowing said main unit to receive audio signals from said extension telephones; and a second communication path for allowing said main unit to receive control signals from said extension telephone, wherein said main unit has first analyzing means for analyzing the audio signals received from said first communication path, second analyzing means for analyzing the control signals received from said second communication path, switching means for connecting said first communication path with selected one of external lines and said first analyzing means, and calling means for calling in accordance with the results of the analysis performed by said first and second analyzing means, wherein said switching means connects said first communication path with said first analyzing means when calling, and connects said first communication path with the external line after calling.
Claim 20
Dependent Claim
34 words
A system according to claim 16, wherein said main unit executes time division communication with said extension telephones, and said first and second communication paths are different channels on a set of communication lines.
Claim 21
Dependent Claim
14 words
A system according to claim 16, wherein said calling means generates a dial pulse.
Claim 22
Dependent Claim
34 words
A system according to claim 16, wherein when a calling request from said extension telephone is detected, said main unit connects the extension telephone which executed the calling request and said first analyzing means.
Claim 23
Dependent Claim
145 words
A key telephone system comprising: a plurality of extension telephones; a main unit; an electronic apparatus in which information can be independently registered from said extension telephones, wherein said main unit has first analyzing means for analyzing control signals generated by said extension telephones; second analyzing means for analyzing the information generated by said electronic apparatus; switching means for connecting said second analyzing means with one of said plurality of extension telephones; calling means for calling in accordance with results of analysis performed by said first and second analyzing means; and alarm means for generating an alarm when a request for connection with said second analyzing means is sent from one of said plurality of extension telephones, to said one extension telephone which sent the request for connection, in a case where said second analyzing means is already occupied by another of said extension telephones.
Claim 24
Dependent Claim
145 words
A key telephone system comprising: a plurality of extension telephones; a main unit; an electronic apparatus in which information can be independently registered from said extension telephones, wherein said main unit has first analyzing means for analyzing control signals generated by said extension telephones; second analyzing means for analyzing the information generated by said electronic apparatus; switching means for connecting said second analyzing means with one of said plurality of extension telephones; calling means for calling in accordance with results of analysis performed by said first and second analyzing means; and alarm means for generating an alarm when a request for connection with said second analyzing means is sent from one of said plurality of extension telephones, to said one extension telephone which sent the request for connection, in a case where said second analyzing means is already occupied by another of said extension telephones.
Claim 25
Dependent Claim
26 words
A system according to claim 20, wherein said electronic apparatus further comprises: memory means; and inputting means for inputting a telephone number to said memory means.
Claim 26
Dependent Claim
48 words
A system according to claim 21, wherein said electronic apparatus further comprises: selecting means for selecting a desired telephone number from a plurality of telephone numbers stored in said memory means; and transmitting means for transmitting the telephone number selected by said selecting means to said extension telephone.
Claim 27
Dependent Claim
27 words
A system according to claim 20, wherein said electronic apparatus transmits the information in a state in which it is not electrically connected to said extension telephones.
Claim 28
Dependent Claim
34 words
A system according to claim 20, wherein, when a calling request from said extension telephone is detected, said main unit connects the extension telephone which executed the calling request and said second analyzing means.
Claim 29
Dependent Claim
20 words
A system according to claim 20, wherein said second analyzing means analyzes an audio signal generated by said electronic apparatus.
Claim 30
Dependent Claim
39 words
A system according to claim 19, wherein in the case where said first analyzing means has already been connected to another extension telephone, said main unit informs such a fact to the extension telephone which executed the calling request.
Claim 31
Dependent Claim
97 words
A key telephone system comprising: an extension telephone; first receiving means for receiving a dial number on the basis of a key operation of said extension telephone; second receiving means for receiving a dial number from an apparatus which cannot be electrically connected to said extension telephones; and calling means for calling in accordance with the dial number received by said first and second receiving means, wherein said extension telephone has instructing means for instructing use of said second receiving means and said second receiving means is enabled when use of said second receiving means is instructed.
Claim 32
Dependent Claim
97 words
A key telephone system comprising: an extension telephone; first receiving means for receiving a dial number on the basis of a key operation of said extension telephone; second receiving means for receiving a dial number from an apparatus which cannot be electrically connected to said extension telephones; and calling means for calling in accordance with the dial number received by said first and second receiving means, wherein said extension telephone has instructing means for instructing use of said second receiving means and said second receiving means is enabled when use of said second receiving means is instructed.
Claim 33
Dependent Claim
15 words
A system according to claim 27, wherein said second receiving means receives a voice sound.
Claim 34
Dependent Claim
38 words
A system according to claim 27, wherein said second calling means has analyzing means for analyzing the dial number received by said receiving means and calls in accordance with the result of the analysis of said analyzing means.
Claim 35
Dependent Claim
24 words
A system according to claim 29, wherein said calling means makes said analyzing means operative in accordance with the instruction by said instructing means.
Claim 36
Dependent Claim
15 words
A system according to claim 1, wherein said audio analyzing means includes a PB receiver.
Claim 37
Dependent Claim
14 words
A system according to claim 6, wherein said receiving means includes a PB receiver.
Claim 38
Dependent Claim
18 words
A system according to claim 6, wherein said alarm means sends an alarm sound to said extension telephone.
Claim 39
Dependent Claim
47 words
A system according to claim 6, wherein said extension telephone comprises catch means for catching a line, and said alarm means generates the alarm when said catch means does not receive the information within a predetermined period of time from the line catch of said catch means.
Claim 40
Dependent Claim
34 words
A system according to claim 6, wherein said alarm means generates the alarm when the information is not received within a predetermined period of time from when said extension telephone enters an off-hook state.
Claim 41
Dependent Claim
15 words
A system according to claim 16, wherein said first analyzing means includes a PB receiver.
Claim 42
Dependent Claim
15 words
A system according to claim 20, wherein said second analyzing means includes a PB receiver.
Claim 43
Dependent Claim
18 words
A system according to claim 20, wherein said alarm means sends an alarm sound through said switch means.
Claim 44
Dependent Claim
15 words
A system according to claim 27, wherein said second receiving means includes a PB receiver.
Claim 45
Dependent Claim
129 words
A key telephone system comprising: a plurality of extension telephones; switching means for outputting to an external line an audio signal which is input from one of said plurality of extension telephones through an audio path; control analyzing means for analyzing a control signal which is input via one of said plurality of extension telephones through a control path; call means for sending to the external line a call signal according to a result of analysis by said control analyzing means; and audio analyzing means for analyzing the audio signal which is input from one of said plurality of extension telephones through the audio path, wherein said call means further sends to the external line the call signal according to a result of analysis of said audio analyzing means.
Claim 46
Dependent Claim
129 words
A key telephone system comprising: a plurality of extension telephones; switching means for outputting to an external line an audio signal which is input from one of said plurality of extension telephones through an audio path; control analyzing means for analyzing a control signal which is input via one of said plurality of extension telephones through a control path; call means for sending to the external line a call signal according to a result of analysis by said control analyzing means; and audio analyzing means for analyzing the audio signal which is input from one of said plurality of extension telephones through the audio path, wherein said call means further sends to the external line the call signal according to a result of analysis of said audio analyzing means.
Claim 47
Dependent Claim
31 words
A system according to claim 40, wherein said switching means sends the audio signal input from the external line to one of said plurality of extension telephones through the audio path.
Claim 48
Dependent Claim
18 words
A system according to claim 40, wherein a plurality of external lines are connected to said switching means.
Claim 49
Dependent Claim
21 words
A system according to claim 40, wherein said plurality of extension telephones generate the control signal according to a key operation.
Claim 50
Dependent Claim
43 words
A system according to claim 40, wherein said switching means outputs the audio signal to the external line to which the call signal is sent, and the audio signal is the audio signal input from said extension telephone which output the control signal.
Claim 51
Dependent Claim
49 words
A system according to claim 40, wherein said switching means outputs the audio signal to the external line to which the call signal is sent, and the audio signal is the audio signal input from said extension telephone which output the audio signal analyzed by said audio analyzing means.
Claim 52
Dependent Claim
11 words
A system according to claim 40, further comprising a main unit.
Claim 53
Dependent Claim
14 words
A system according to claim 46, wherein said main unit includes said switching means.
Claim 54
Dependent Claim
15 words
A system according to claim 46, wherein said main unit includes said control analyzing means.
Claim 55
Dependent Claim
14 words
A system according to claim 46, wherein said main unit includes said call means.
Claim 56
Dependent Claim
15 words
A system according to claim 46, wherein said main unit includes said audio analyzing means.
Claim 57
Dependent Claim
15 words
A system according to claim 40, wherein said audio analyzing means includes a PB receiver.
Claim 58
Dependent Claim
43 words
A system according to claim 6, wherein said extension telephone has operation means for inputting a dial number, and said alarm means does not generate the alarm when the dial number is input from said operation means within said predetermined period of time.
Claim 59
Dependent Claim
32 words
A system according to claim 16, wherein each of said plurality of extension telephones has operation means for inputting a dial number and generates the control signals according to said operation means.
Claim 60
Dependent Claim
21 words
A system according to claim 27, wherein said first receiving means is enabled irrespective of an instruction of said instructing means.
References Cited (Backward Citations)
US4126768A
Cited
US4644107A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-02-25 | 1994-08-27 | 1995-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-25 | 1998-08-27 | 1999-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-25 | 2002-08-27 | 2003-02-26 | $7700.00 | Window Closed / Lapsed |