Keyboard video mouse (KVM) switch for transmission of high quality audio with 64-bit data packets wherein transmissions of data packets are within a defined time limit

• US 8,527,678 B2
• Filed: 11/05/2010
• Issued: 09/03/2013
• Est. Priority Date: 09/18/2003
• Status: Active Grant

• Current Assignee: RIIP, Inc.
• Original Assignee: RIIP, Inc.
• Inventors: Liaw, Yee, Glinski, Lech
• Primary Examiner(s): PEYTON, TAMMARA R
• Application Number:
  US12/940,566
• Publication Number:
  US 20110072175A1
• Time in Patent Office: 1,033 Days
• Field of Search: 710/62, 710/100, 710/38, 710/64, 710/72, 710/300, 345/213, 345/156, 345/520, 307/147, 709/204, 709/231
• US Class Current: 710/62
• CPC Class Codes: G06F 13/385 for adaptation of a particular data processing system to different peripheral devices
• CPC Class Codes: H04L 41/0803 Configuration setting
• CPC Class Codes: H04L 41/082 the condition being updates or upgrades of network functionality

Abstract

The present invention provides an intelligent, modular multimedia computer management system for coupling a series of remote computers to one or more user workstations to allow each user workstation to selectively access and control one or more remote computers. The computer management system incorporates a centralized switching system that receives keyboard, cursor control device, audio, and auxiliary peripheral device signals from the user workstation and transmits and applies the signals to the remote computer in the same manner as if the keyboard, cursor control device, audio input source, or auxiliary peripheral device of the user workstation were directly coupled to the remote computer. Also, the user workstation receives audio signals and auxiliary peripheral device signals from the remote computer. In addition, the multimedia computer management system transmits video signals from the remote computer over an extended range for display on the video monitor of the user workstation.

Claims

1. A computer management system comprising:

a workstation including a keyboard, a video monitor, a cursor control device, and an audio device, said workstation being coupled to a user interface;

a plurality of computers each coupled to one of a plurality of computer interfaces; and

a management unit comprising a switching system with circuitry for transmitting keyboard, cursor control device, audio, and auxiliary peripheral device signals from said workstation to one of said remote computers via said coupled computer interface, said switching system further comprising circuitry for transmitting keyboard, video, cursor control device, and auxiliary peripheral device signals from said one of said remote computers to said workstation via said user interface;

a plurality of eight-conductor cables for coupling at least one of said computer interfaces and said user interface to said management unit,

wherein said user interface receives user keyboard signals, user mouse signals, and user audio signals from said user keyboard, said user mouse, and said user audio device, respectively,

wherein said user interface transmits said user keyboard signals, said user mouse signals, and said user audio signals via a first of said eight-conductor cables to said management unit,

wherein said management unit is configured to receive said computer keyboard signals, said computer mouse signals, and said computer audio signals via said first eight-conductor cable in data packets each including an audio signal data section, a keyboard and mouse signal data section and an auxiliary device signal data section, and

wherein said first eight-conductor cable comprises a first, second, and third twisted pair of wires that transmit red, green, and blue components of said computer video signals, respectively, and further comprises a fourth twisted pair of wire that transmits said data packets.

2. A computer management system according to claim 1, wherein said computer interface is further coupled to at least one computer audio device.

3. A computer management system according to claim 2,

wherein said computer interface is configured to receive computer keyboard signals from said computer, computer mouse signals from said computer, computer video signals from said computer, and computer audio signals from at least one of said computer and said computer audio devices,

wherein said computer interface is configured to transmit said computer keyboard signals, said computer video signals, said computer mouse signals, and said computer audio signals via a second one of said eight-conductor cables to said management unit, and

wherein said computer keyboard signals, said computer mouse signals, and said computer audio signals are transmitted by said computer interface in said data packets each including an audio signal data section, a keyboard and mouse signal data section and an auxiliary signal data section.

4. A computer management system according to claim 1, wherein said eight-conductor cables each comprise at least one Registered Jack 45 (“

RJ-45”

) connector.

5. A computer management system according to claim 3, wherein said second eight-conductor cable comprises a first, second, and third twisted pair of wires that transmit red, green, and blue components of said computer video signals, respectively, and further comprises a fourth twisted pair of wire that transmits said data packets.

6. A computer management system according to claim 5, wherein a computer horizontal synchronization signal is encoded onto one of said green component, said red component, and said blue component of said computer video signals.

7. A computer management system according to claim 5, wherein a computer vertical synchronization signal is encoded onto one of said green component, said red component, and said blue component of said computer video signals.

8. A computer management system according to claim 2, wherein at least one of said user audio device and said computer audio device are selected from the group consisting of a microphone, an analog playback device, a digital playback device, a cassette player, a compact disc player, a Digital VideoDisc player, a television, a computer, a telephone, a cellular telephone, a projector, a camera, and a personal digital assistant.

9. A computer management system according to claim 2, wherein said computer audio device is at least one of an audio in port of said computer and an audio out port of said computer.

10. A computer management system according to claim 2, wherein at least one of said user audio device and said computer audio device are selected from the group consisting of a speaker, an audio headset, a projector, an analog audio recording device, a digital audio recording device, a second computer, a cassette recorder, a Compact Disc writer, a Digital VideoDisc writer, a television, a camera, a telephone, a cellular telephone, and a personal digital assistant.

11. A computer management system according to claim 1, further comprising:

audio cables for coupling said user audio device to said user interface and for coupling said computer audio device to said computer interface.

12. A computer management system according to claim 11, wherein said audio cables are configured to bidirectionally transmit audio signals.

13. A computer management system according to claim 2, further comprising:

an audio cable for coupling said computer interface to at least one of an audio in port of said computer, an audio out port of said computer, and said computer audio device,

wherein said audio cable bidirectionally transmits audio signals.

14. A computer management system according to claim 12,

wherein said computer interface cable comprises at least one of a first connector for coupling said computer interface cable to said computer interface, a second connector for coupling said computer interface cable to a keyboard port of said computer, a third connector for coupling said computer interface cable to a video port of said computer, a fourth connector for coupling said computer interface cable to a mouse port of said computer, a fifth connector and a sixth connector for coupling said computer interface cable to a first and a second of said computer audio devices, and a seventh and an eighth connector for coupling said computer interface cable to an audio in port of said computer and an audio out port of said computer;

wherein said first computer audio device comprises an audio input device; and

wherein said second computer audio device comprises an audio output device.

15. A computer management system according to claim 14, wherein said computer interface cable transmits

at least one of said user keyboard signals, said user mouse signals, and said user audio signals from said computer interface to at least one of said computer and said computer audio devices;

and

wherein said computer interface cable transmits at least one of said computer keyboard signals, said computer video signals, said computer mouse signals, and said computer audio signals to said computer interface from at least one of said computer and said computer audio devices.

37. A computer management system according to claim 1, wherein said a workstation further includes an auxiliary peripheral device.

38. A computer management system according to claim 1, wherein

said data packets further comprise a first section of 2 bits including overhead data,

said audio signal data section is a section of 34 bits including audio signal data, and

and said keyboard and mouse signal data section is a section of 10 bits including keyboard and mouse signal data.

39. A computer management system according to claim 38, wherein said data packets further comprise an auxiliary device signal data section of 18 bits including auxiliary device signal data.

42. A computer management system according to claim 1, wherein

wherein said user interface is configured to receive said user keyboard signals, said user mouse signals, and said user audio signals and form said data packets within a defined time limit.

43. A computer management system according to claim 42, wherein the defined time limit allows for the transmission of high quality audio.

44. A computer management system according to claim 42, wherein the defined time limit is about 6.4 microseconds.

16. A computer management system comprising:

at least one computer;

at least one computer interface coupled to said computer via a computer interface cable;

at least one management unit coupled to said computer interface; and

at least one user interface coupled to said management unit and coupled to at least one of a user keyboard, a user video monitor, a user mouse, a user audio device, and a user auxiliary peripheral device;

wherein said user interface is configured to receive at least one of user keyboard signals, user mouse signals, user audio signals, and user auxiliary peripheral device signals,

wherein said user interface is configured to transmit said user keyboard signals, said user mouse signals, and said user auxiliary peripheral device signals to said computer via said management unit, and

wherein said management unit is configured to receive said user keyboard signals, said user mouse signals, said user auxiliary peripheral device signals and said user audio signals in data packets each including an auxiliary signal data section, a keyboard and mouse signal data section and an audio signal data section.

17. A computer management system according to claim 16, wherein said computer interface is further coupled to at least one of a computer audio device and a computer auxiliary peripheral device.

18. A computer management system according to claim 17,

wherein said computer interface is configured to receive computer keyboard signals from said computer, computer mouse signals from said computer, computer video signals from said computer, computer audio signals from at least one of said computer and said computer audio devices, and computer auxiliary device signals from said computer auxiliary peripheral device,

wherein said computer interface is configured to transmit said computer keyboard signals, said computer video signals, said computer mouse signals, said computer audio signals, and said computer auxiliary peripheral signals to said user interface via said management unit, and

wherein said computer keyboard signals, said computer mouse signals, and said computer audio signals are transmitted by said computer interface to said management unit in said data packets each including an audio signal data section, a keyboard and mouse signal data section and an auxiliary signal data section.

19. A computer management system according to claim 16, wherein said user interface is configured to transmit said user keyboard signals, said user mouse signals, said user audio signals, and said user audio peripheral device signals to said computer via said management unit, and

wherein said management unit is configured to receive said user keyboard signals, said user mouse signals, said user audio signal and said user auxiliary peripheral device signals in said data packets each including an auxiliary signal data section, an audio signal data section and a keyboard and mouse signal data section.

20. A computer management system according to claim 18, further including:

at least one eight-conductor cable for coupling at least one of said computer interface and said user interface to said management unit.

21. A computer management system according to claim 20, wherein said eight-conductor cable comprises at least one Registered Jack 45 (“

RJ-45”

) connector.

22. A computer management system according to claim 20, wherein said eight-conductor cable comprises a first, second, and third twisted pair of wires that transmit red, green, and blue components of said computer video signals, respectively, and further comprises a fourth twisted pair of wire that transmits at least one of said computer keyboard signals, said computer video signals, said computer mouse signals, said computer audio signals, and said computer auxiliary peripheral device signals in said data packets each including an auxiliary signal data section, an audio signal data section and a keyboard and mouse signal data section.

23. A computer management system according to claim 22, wherein a computer horizontal synchronization signal is encoded onto one of said green component, said red component, and said blue component of said computer video signals.

24. A computer management system according to claim 22, wherein a computer vertical synchronization signal is encoded onto one of said green component, said red component, and said blue component of said computer video signals.

25. A computer management system according to claim 17, further comprising:

at least one of a user auxiliary peripheral module and a computer auxiliary peripheral module;

wherein said user auxiliary peripheral module couples said user auxiliary peripheral device to said user interface; and

wherein said computer auxiliary peripheral module couples said computer auxiliary peripheral device to said computer interface.

26. A computer management system according to claim 25, wherein said user auxiliary peripheral module and said computer auxiliary peripheral module are coupled to said user interface and said computer interface, respectively, via a forty pin ribbon cable.

27. A computer management system according to claim 17, wherein at least one of said user auxiliary peripheral device and said computer auxiliary peripheral device are selected from the group consisting of a serial port device, a Universal Serial Bus device, a Recommended Standard 232 device, a PS/2 device, a parallel device, a firewire device, a Registered Jack 28 device, a Registered Jack 21 device, a Registered Jack 45 device, a Registered Jack 48 device, a British Naval Connector device, a Centronics device, an Advanced Technology device, a Digital Video Interface device, an Integrated Development Environment device, a Fiber Distributed Data Interface device, a switch closure device, or a Small Computer System Interface device.

28. A computer management system according to claim 17, wherein at least one of said user auxiliary peripheral device and said computer auxiliary peripheral device are selected from the group consisting of a keyboard, a mouse, an optical mouse, a trackball, a Universal Serial Bus keyboard adapter, a Universal Serial Bus mouse adapter a second computer, a port expander, a Bluetooth device, a cellular telephone, a web camera, a floppy disk drive, a hard disk drive, a Universal Serial Bus Flash Drive, a digital media reader, a digital media writer, a microphone, a speaker, a subwoofer, a scanner, a copier, a printer, a projector, a television, an analog monitor, a digital monitor, a video capture device, a modem, a hub, a router, a switch, a cable modem, a Digital Subscriber Line modem, a wireless network hub, a wireless network router, a wireless access point, a print server, a wireless print server, an Ethernet adapter, an analog audio playback device, an analog audio recording device, a digital audio playback device, a digital audio recording device, a tape drive, a storage backup device, a joystick, a game pad, a power supply, an uninterruptible power supply, a Universal Serial Bus hub, a Compact Disc Read Only Memory device, a Compact Disc write device, a Compact Disc re-write device, an audio device, a Digital VideoDisc Random Access Memory device, a camera, a cassette recorder, a headset, a camcorder, a fingerprint reader and a personal digital assistant.

29. A computer management system according to claim 17, wherein at least one of said user audio device and said computer audio device is a microphone, an analog playback device, a digital playback device, a cassette player, a compact disc player, a Digital VideoDisc player, a television, a computer, a telephone, a cellular telephone, a projector, a camera, and a personal digital assistant.

30. A computer management system according to claim 17, wherein said computer audio device is at least one of an audio in port of said computer and an audio out port of said computer.

31. A computer management system according to claim 17, wherein at least one of said user audio device and said computer audio device is a speaker, an audio headset, a projector, an analog audio recording device, a digital audio recording device, a second computer, a cassette recorder, a Compact Disc writer, a Digital VideoDisc writer, a television, a camera, a telephone, a cellular telephone, and a personal digital assistant.

32. A computer management system according to claim 16, further comprising:

at least one audio cable;

wherein said audio cable couples at least one of said user audio device to said user interface and said computer audio device to said computer interface.

33. A computer management system according to claim 32, wherein said audio cable is configured to bidirectionally transmit audio signals.

34. A computer management system according to claim 17, further comprising:

an audio cable for coupling said computer interface to at least one of an audio in port of said computer, an audio out port of said computer, and at least one of said computer audio devices;

wherein said audio cable is configured to bidirectionally transmit audio signals.

35. A computer management system according to claim 25,

wherein said computer interface cable comprises at least one of a first connector for coupling said computer interface cable to said computer interface, a second connector for coupling said computer interface cable to a keyboard port of said computer, a third connector for coupling said computer interface cable to a video port of said computer, a fourth connector for coupling said computer interface cable to a mouse port of said computer, a fifth connector and a sixth connector, for coupling said computer interface cable to a first and a second of said computer audio devices, a seventh and an eighth connector for coupling said computer interface cable to an audio in port of said computer and an audio out port of said computer, and a ninth connector for coupling said computer interface cable to at least one of said auxiliary peripheral device and said auxiliary peripheral device module;

wherein said first computer audio device comprises an audio input device; and

wherein said second computer audio device comprises an audio output device.

36. A computer management system according to claim 35,

wherein said computer interface cable is configured to transmit at least one of said user keyboard signals, said user mouse signals, said user audio signals, and said user auxiliary peripheral device signals from said computer interface to at least one of said computer and said computer audio devices;

and

wherein said computer interface cable is configured to transmit at least one of said computer keyboard signals, said computer video signals, said computer mouse signals, said computer audio signals, and said computer auxiliary peripheral device signals to said computer interface from at least one of said computer and said computer audio devices.

40. A computer management system according to claim 16, wherein

said data packets further comprise a first section of 2 bits including overhead data,

said auxiliary signal data section is a section of 18 bits including auxiliary device signal data, and

and said keyboard and mouse signal data section is a section of 10 bits including keyboard and mouse signal data.

41. A computer management system according to claim 19, wherein

said data packets further comprise a first section of 2 bits including overhead data,

said auxiliary signal data section is a section of 18 bits including auxiliary device signal data,

said audio signal data section is a section of 34 bits including audio signal data, and

and said keyboard and mouse signal data section is a section of 10 bits including keyboard and mouse signal data.

45. A computer management system according to claim 16, wherein

wherein said user interface is configured to receive said user keyboard signals, said user mouse signals, and said user audio signals and form said data packets within a defined time limit.

46. A computer management system according to claim 45, wherein the defined time limit allows for the transmission of high quality audio.

47. A computer management system according to claim 45, wherein the defined time limit is about 6.4 microseconds.