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

• US 7,853,740 B2
• Filed: 09/18/2003
• Issued: 12/14/2010
• Est. Priority Date: 09/18/2003
• Status: Expired due to Fees

• Current Assignee: RIIP, Inc.
• Original Assignee: RIIP, Inc.
• Inventors: Glinski, Lech, Liaw, Yee
• Primary Examiner(s): PEYTON, TAMMARA R
• Application Number:
  US10/665,723
• Publication Number:
  US 20050066000A1
• Time in Patent Office: 2,644 Days
• Field of Search: 710/62, 710/100, 710/38, 710/64, 710/72, 710/300, 345/213, 345/156, 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-readable storage medium encoded with a computer program comprising instruction that, when executed, operate to cause a computer management system to perform operations comprising:

receiving keyboard signals, video signals, mouse signals, and audio signals at a transmission node;

forming a 64 bit data packet comprising

a first section of 2 bits including overhead data,

a second section of 34 bits including audio signals,

a third section of 10 bits including keyboard and mouse signals, and

a fourth section of 18 bits including auxiliary data;

encoding a vertical synchronization signal onto one of a red, blue, and green component of said video signals;

encoding a horizontal synchronization signal onto one of said red component, said blue component, and

said green component of said video signals;

transmitting said data packet to a receiving node via a first pair of wires in an eight conductor cable;

wherein the receiving at a transmission node and transmitting of said data packets to a receiving node occurs within a defined time limit

transmitting said red component of said video signals to said receiving node via a second pair of wires in said eight conductor cable;

transmitting said blue component of said video signal to said receiving node via a fourth pair of wires in said eight conductor cable; and

transmitting said green component of said video signal to said receiving node via a third pair of wires in said eight conductor cable.

2. A computer-readable storage medium according to claim 1, further comprising:

converting said data packet to a differential signal;

converting said red component of said video signals to a differential signal;

converting said green component of said video signals to a differential signal; and

converting said blue component of said video signals to a differential signal.

3. A computer-readable storage medium according to claim 1, wherein said audio device is 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 Video Disc player, a television, a computer, a telephone, a cellular telephone, a projector, a camera, and a personal digital assistant.

4. A computer-readable storage medium according to claim 1, wherein said audio device is at least one of an audio in port of said computer and an audio out port of said computer.

5. A computer-readable storage medium according to claim 1, wherein said audio device is 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 Video Disc writer, a television, a camera, a telephone, a cellular telephone, and a personal digital assistant.

10. The computer-readable storage medium according to claim 1, wherein the defined time limit allows for the transmission of high quality audio.

11. The computer-readable storage medium according to claim 1, wherein the defined time limit is about 6.0 to 8.1 microseconds.

6. A computer-readable storage medium encoded with a computer program comprising instruction that, when executed, operate to cause a computer management system a computer to perform operations comprising:

receiving keyboard signals, video signals, mouse signals, and auxiliary peripheral device signals at a transmission node;

forming a 64 bit data packet comprising

a first section of 2 bits including overhead data,

a second section of 34 bits including audio signals,

a third section of 10 bits including keyboard and mouse signals, and

a fourth section of 18 bits including auxiliary data;

encoding a vertical synchronization signal onto one of a red, blue, and green component of said video signals;

encoding a horizontal synchronization signal onto one of said red component, said blue component, and said green component of said video signals;

transmitting said data packet to a receiving node via a first pair of wires in an eight conductor cable;

wherein the receiving at a transmission node and transmitting of said data packets to a receiving node occurs within a defined time limit

transmitting said red component of said video signals to said receiving node via a second pair of wires in said eight conductor cable;

transmitting said blue component of said video signal to said receiving node via a fourth pair of wires in said eight conductor cable;

and transmitting said green component of said video signal to said receiving node via a third pair of wires in said eight conductor cable.

7. A computer-readable storage medium according to claim 6, further comprising the steps of:

converting said data packet to a differential signal;

converting said red component of said video signals to a differential signal;

converting said green component of said video signals to a differential signal; and

converting said blue component of said video signals to a differential signal.

8. A computer-readable storage medium according to claim 6, wherein said auxiliary peripheral device is selected from the group consisting of a serial port device, a Universal Serial Bus device, a Recommended Standard device, a PS/2 device, a parallel device, a firewire device, a Registered Jack device, a Registered Jack device, a Registered Jack device, a Registered Jack 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.

9. A computer-readable storage medium according to claim 6, wherein said auxiliary peripheral device is 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 Video Disc Random Access Memory device, a camera, a cassette recorder, a headset, a camcorder, and a personal digital assistant.

12. The computer-readable storage medium according to claim 6, wherein the defined time limit allows for the transmission of high quality audio.

13. The computer-readable storage medium according to claim 6, wherein the defined time limit is about 6.0 to 8.1 microseconds.