Generating a mark/space table and a string of timing information on a remote control device

• US 7,286,076 B1
• Filed: 08/27/2004
• Issued: 10/23/2007
• Est. Priority Date: 02/10/2004
• Status: Expired due to Fees

• Current Assignee: IXYS Intl Limited (Littelfuse Incorporated), Microsoft Corporation
• Original Assignee: ZiLOG Incorporated (Littelfuse Incorporated)
• Inventors: Miramontes, Oscar C., Provis, Adam P. G., Vergis, George C.
• Primary Examiner(s): Holloway, III; Edwin C.
• Application Number:
  US10/928,576
• Time in Patent Office: 1,152 Days
• Field of Search: 341/173, 341/176, 340/825.22, 340/825.24, 340/825.25, 340/825.69, 340/825.72, 348/734, 398106-112, 717/115, 717/139
• US Class Current: 341/173
• CPC Class Codes: G08C 17/02 using a radio link
• CPC Class Codes: G08C 2201/33 Remote control using macros, scripts
• CPC Class Codes: G08C 2201/50 Receiving or transmitting feedback, e.g. replies, status updates, acknowledgements, from the controlled devices
• CPC Class Codes: G08C 23/04 using light waves, e.g. infrared
• CPC Class Codes: H04L 1/1803 Stop-and-wait protocols
• CPC Class Codes: H04N 21/41265 having a remote control device for bidirectional communication between the remote control device and client device unidirectional remote control device H04N21/42204
• CPC Class Codes: H04N 21/42221 Transmission circuitry, e.g. infrared [IR] or radio frequency [RF]
• CPC Class Codes: H04N 21/42226 Reprogrammable remote control devices
• CPC Class Codes: H04N 21/4437 Implementing a Virtual Machine [VM] virtual machines in general G06F9/45533

Abstract

A remote control device detects that a command has been chosen. A command may, for example, have been chosen by a user pressing a key on the remote control device. In response, the remote control device generates a mark/space table and a string of timing information. The string of timing information includes entries that refer to mark time values and space time values in the mark/space table. The string of timing information also may contain special control portions (for example, a control portion can indicate that a portion of the string of timing information should be repeated a given number of times). The mark/space table and the string of timing information are then used to generate an operational signal that is transmitted from the remote control device. The mark/space table and string of timing information is a particularly compact way of describing an operational signal for a remote control device.

Claims

1. A method comprising:

detecting that a command is chosen on a remote control device;

generating a mark/space table on the remote control device after the detecting that the command was chosen, wherein the mark/space table contains a mark time and a space time associated with a codeset, and wherein a command code of the codeset corresponds to the command;

generating a string of timing information that references the mark time and the space time; and

generating an operational signal using the string of timing information, wherein the operational signal contains the command code.

2. The method of claim 1, wherein the generating the mark/space table is performed by interpreting a script.

3. The method of claim 1, wherein the generating the operational signal involves retrieving the mark time and the space time from the mark/space table.

4. The method of claim 1, wherein the mark/space table does not contain any mark time that is not used in the generating the operational signal.

5. The method of claim 1, wherein the operational signal is received by an electronic consumer device and causes the electronic consumer device to perform a function corresponding to the command that was chosen.

6. The method of claim 1, wherein the mark/space table contains modulation information describing an amount of time during which a modulation signal is a digital high.

7. The method of claim 1, wherein the mark time is an N-bit value, wherein the string of timing information comprises an M-bit index that points to the mark time, and wherein N is larger than M.

8. The method of claim 1, wherein the string of timing information is comprised of bytes, wherein each byte has a designator bit with a digital value, and wherein the digital value indicates whether the byte is a mark/space-pair byte or a control byte.

9. The method of claim 1, wherein the string of timing information comprises a frame of bytes, the frame of bytes includes a control byte, the control byte has a REP bit and repeat bits, and wherein the operational signal is generated, when the REP bit is set, by repeating the frame by a number of times indicated by the repeat bits.

10. The method of claim 1, wherein the string of timing information comprises a frame of bytes, the frame of bytes includes a control byte, the control byte has an end-of-frame bit, and wherein the control byte ends the frame when the end-of-frame bit is set.

11. The method of claim 1, wherein the string of timing information comprises a frame of bytes, the frame of bytes includes a control byte, the control byte has an end-of-transmission bit, and wherein the control byte ends the string of timing information when the end-of-transmission bit is set.

12. A method comprising:

interpreting a script on a remote control device, the script containing codeset information corresponding to an electronic consumer device, the codeset information including a keycode, a mark time and a space time, wherein the keycode corresponds to a function of the electronic consumer device;

storing a first N-bit value in a table, wherein the first N-bit value describes the mark time;

storing a second N-bit value in the table, wherein the second N-bit value describes the space time; and

generating a string of M-bit indices, wherein the string comprises a first M-bit index that points to the first N-bit value and a second M-bit index that points to the second N-bit value, wherein N is larger than M, wherein the string is used to generate an operational signal, and wherein the keycode is modulated onto the operational signal using the mark time and the space time.

13. The method of claim 12, wherein the interpreting the script is performed after a key on the remote control device is pressed, and wherein the keycode corresponds to the key that was pressed.

14. The method of claim 12, wherein all N-bit values in the table that describe mark times or space times are pointed to by M-bit indices of the string of M-bit indices.

15. The method of claim 12, wherein the table contains modulation information describing an amount of time during which a data signal is a digital high, wherein the data signal is modulated onto the operational signal.

16. The method of claim 12, wherein the string of M-bit indices is comprised of bytes, wherein each byte has a designator bit with a digital value, and wherein the digital value indicates whether the byte is a mark/space-pair byte or a control byte.

17. The method of claim 12, wherein the string of M-bit indices comprises a frame of bytes, the frame of bytes includes a control byte, the control byte has a REP bit and repeat bits, and wherein the operational signal is generated, when the REP bit is set, by repeating the frame by a number of times indicated by the repeat bits.

18. The method of claim 12, wherein the string of M-bit indices comprises a frame of bytes, the frame of bytes includes a control byte, the control byte has an end-of-frame bit, and wherein the control byte ends the frame when the end-of-frame bit is set.

19. The method of claim 12, wherein the string of M-bit indices comprises a frame of bytes, the frame of bytes includes a control byte, the control byte has an end-of-transmission bit, and wherein the control byte ends the string of M-bit indices when the end-of-transmission bit is set.

20. A device comprising:

a microcontroller in a remote control device, wherein the remote control device has a key; and

means for generating a mark/space table and a string of timing information on the remote control device after the key is pressed, wherein the mark/space table contains a mark time and a space time associated with a codeset, wherein a keycode of the codeset corresponds to the key, and wherein the string of timing information references the mark time and the space time.

21. The device claim 20, wherein an operational signal is generated using the string of timing information, and wherein the operational signal contains the keycode.

22. The device claim 21, wherein the operational signal is received by an electronic consumer device and causes the electronic consumer device to perform a function corresponding to the key that was pressed.