Patent US5903547A successfully refreshed from Google Patents.
US5903547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
ATM exchanger
Assignee: Mitsubishi Electric Corp
•
Filing: 1997-01-03
•
Granted: 1999-05-11
•
Expires: 2017-01-03
Abstract
Abstract In a case where a signal from a G3FAX terminal is transmitted through an ATM network, the fact that the media is a G3FAX terminal is recognized in a tone detecting section or FAX protocol control section within an ATM exchanger and the data is digitized in and transmitted from the FAX processing section, but in this step a congestion level is identified by a congestion state detecting section according to the traffic data measured in the traffic measuring section as well as in the ATM bus control section and other device congestion data in the network, a transmission rate for G3FAX signal transmission is decided according to a congestion level in the FAX speed control section, and the connection protocol between G3FAX terminals is controlled by the FAX protocol control section to transmit the FAX signals controlling a transmission rate between G3FAX terminals.
Inventors
- 👤 Kiyoshi Shimokasa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:05
CPC Classifications
H; H04; H04L; H04L49/00; H04L49/50; H04L49/501; H04L49/20; H04L49/205; H04N; H04N1/00; H04N1/00095; H04N1/001; H04N1/32; H04N1/333; H04N1/33307; H04N1/33323; H04N1/33338; H04N1/33353; H04N1/33361; H04L12/00; H04L12/54; H04L12/56; H04L12/5601; H04L2012/5603; H04L2012/5609; H04L2012/5612; H04L2012/5614; H04L2012/5615; H04L2012/5616; H04L2012/5619; H04N2201/00; H04N2201/32; H04N2201/333; H04N2201/33307; H04N2201/33342; H04N2201/3335
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
169 words
An ATM exchanger for executing statistical multiplex transmission of digitized multimedia data from data terminals connected to a private branch exchange (PBX) over an ATM network, comprising: a line interface section for connection to a line of said ATM network, including a traffic measuring section for measuring traffic volume on said line; a PBX interface section for connection to said PBX; an ATM bus connecting said line interface section to said PBX interface section; and a device control section for controlling operation of said ATM exchanger, including an ATM bus control section for measuring traffic volume on said ATM bus and a congestion state detecting section for detecting a congested state according to measured traffic volume by said ATM bus control section and said traffic measuring section; wherein upon detection of a congested state, said device control section controls transmission of facsimile data from a facsimile machine through said PBX by reducing the rate of transmission of said facsimile data by a facsimile data processing section in said PBX.
Claim 2
Dependent Claim
169 words
An ATM exchanger for executing statistical multiplex transmission of digitized multimedia data from data terminals connected to a private branch exchange (PBX) over an ATM network, comprising: a line interface section for connection to a line of said ATM network, including a traffic measuring section for measuring traffic volume on said line; a PBX interface section for connection to said PBX; an ATM bus connecting said line interface section to said PBX interface section; and a device control section for controlling operation of said ATM exchanger, including an ATM bus control section for measuring traffic volume on said ATM bus and a congestion state detecting section for detecting a congested state according to measured traffic volume by said ATM bus control section and said traffic measuring section; wherein upon detection of a congested state, said device control section controls transmission of facsimile data from a facsimile machine through said PBX by reducing the rate of transmission of said facsimile data by a facsimile data processing section in said PBX.
Claim 3
Dependent Claim
57 words
An ATM exchanger according to claim 1, wherein said congestion state detecting section collects data on congestion in other ATM exchangers in the ATM network by means of message communications between ATM exchangers and controls a volume of traffic flowing into the line or the ATM bus according to the congestion state in the entire communication path.
Claim 4
Dependent Claim
85 words
An ATM exchanger according to claim 2, further comprising a level detecting section for assigning a preference degree to each congestion level identified for each of a plurality of channels in said communication path; wherein a preference degree for use of facsimile transmission is assigned for each channel according to the data from said level detecting section and a volume of traffic flowing into the line or the ATM bus is controlled for a level of congestion according to predetermined use conditions for a user.
Claim 5
Dependent Claim
69 words
An ATM exchanger according to claim 3, further comprising a CPU load detecting section for measuring a processor load used in said ATM exchanger and detecting the load state; wherein processing by said ATM exchanger and a volume of traffic flowing into said ATM transmission path or ATM bus is controlled according to the processing load within said ATM exchanger and a congested state in the entire communication path.
Claim 6
Dependent Claim
67 words
An ATM exchanger according to claim 4, further comprising a time setting section in said ATM exchanger for controlling a volume of traffic flowing into the ATM transmission path or the ATM bus according to a congested state in the entire communication path for a preset period of time by determining whether a congested state can be detected or not based on information from said setting section.
Claim 7
Dependent Claim
77 words
An ATM exchanger according to claim 5, further comprising a traffic estimating section for analyzing a result of detection by said congested state detecting section and estimating changes in traffic and controlling a volume of traffic flowing into the line or the ATM bus for reducing the facsimile transmission rate before a congested state occurs in the ATM exchanger by previously estimating a congested state in the communication path based on data from said traffic estimating section.
Claim 8
Dependent Claim
97 words
An ATM exchanger according to claim 6, further comprising a common line signal processing section terminating a common line signal in said PBX interface section, and controlling a volume of traffic flowing into the line or the ATM bus according to a congested state in the communication path, in a case where the communication requested media is determined as G4FAX and the ATM exchanger network is in congestion by converting the G4FAX data to a sound band transmission (G3FAX) in the common line terminating section to provide transmission of the G4FAX data with the G3FAX data function.
Claim 9
Dependent Claim
51 words
An ATM exchange according to claim 7, further comprising an ECM control section, and controlling a volume of traffic flowing into the line or the ATM bus by controlling a transmission packet interval in the ECM according to a temporary congestion state in the ATM network with said ECM control section.
References Cited (Backward Citations)
EP0481505A2
Cited
JPH05244193A
Cited
WO1995011557A1
Cited
WO1995019675A1
Cited
US5654964A
Cited
US5701292A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-05-10 | 2002-11-09 | 2003-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-05-10 | 2006-11-09 | 2007-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-05-10 | 2010-11-09 | 2011-05-11 | $7700.00 | Window Closed / Lapsed |