Display system and microdisplay apparatus

• US 7,474,276 B2
• Filed: 07/24/2001
• Issued: 01/06/2009
• Est. Priority Date: 06/20/2000
• Status: Active Grant

• Current Assignee: Olympus Optical Corporation Limited (Olympus Corporation)
• Original Assignee: Olympus Optical Corporation Limited (Olympus Corporation)
• Inventors: Miyairi, Nobuo, Nakashima, Seiji, Ishizawa, Takanori, Hanayama, Ryotaro, Endo, Taro
• Primary Examiner(s): Nguyen; Kevin M
• Application Number:
  US09/911,673
• Publication Number:
  US 20020113907A1
• Time in Patent Office: 2,723 Days
• Field of Search: 345 7- 9, 345211-214, 348/115, 348/569, 348/563, 348/565, 702/63, 700/17, 700/83, 340/636, 340/531
• US Class Current: 345/7
• CPC Class Codes: G09G 2330/021 Power management, e.g. power saving
• CPC Class Codes: G09G 2370/04 Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller
• CPC Class Codes: G09G 5/006 Details of the interface to the display terminal specific for a display terminal using a CRT G09G1/167; using a flat panel G09G3/2096; circuits for interfacing with colour displays G09G5/04
• CPC Class Codes: H04N 5/63 Generation or supply of power specially adapted for television receivers
• CPC Class Codes: H04N 5/7491 of head mounted projectors

Abstract

A display system includes a host apparatus having a video interface circuit and a display apparatus operated by feed of a video image and power from the host apparatus, and also has a communication function for receiving and transmitting data between the host apparatus and the display apparatus. In the display system, the display apparatus transmits power consumption data thereof stored in an EEPROM to the host apparatus and processes the power consumption data thereof which is received by the host apparatus, thus controlling power of the display system including the host apparatus and the display apparatus.

Claims

1. A display system comprising:

a host apparatus having an image output interface;

a display apparatus which is operated by supply of at least one of a video signal and power from said host apparatus; and

a communication interface for communicating data between said host apparatus and said display apparatus;

wherein said display apparatus comprises;

a storing section for storing power consumption data;

a storing section for storing on-screen display information; and

a display-side communication-section for transmitting said stored power consumption data and said on-screen display information;

wherein said host apparatus comprises;

a host-side communication section for receiving said power consumption data transmitted from said display apparatus and said on-screen display information;

a power control section for entirely performing power control of said display system based on said power consumption data received from said host-side communication section; and

an information superimposing section for superimposing said received on-screen display information on the video signal; and

wherein the host-side communication section transmits the video signal having the on-screen display information superimposed thereon, the display-side communication section receives the transmitted signal, and the display apparatus displays an image of the on-screen display information.

2. A system according to claim 1, wherein:

said host apparatus further comprises a first memory for storing on-screen display information thereof, and a second memory for storing the on-screen display information of said display apparatus which is received via said host-side communication section, and

said information superimposing section converts the on-screen display information stored in at least one of said first memory and said second memory into indicatable bit map information, and superimposes the indicatable bit map information on the video signal.

3. A system according to claim 1, wherein said on-screen display information comprises ASCII text data.

4. A system according to claim 1, wherein said display apparatus is adapted to be selectively connected to a plurality of types of host apparatuses.

5. A system according to claim 1, wherein said host apparatus is adapted to be selectively connected to a plurality of types of display apparatuses.

6. A display system comprising:

a host apparatus having an image output interface;

a display apparatus which is operated by receiving at least a video signal from said host apparatus; and

a communication interface for communicating data between said host apparatus and said display apparatus,

wherein said display apparatus comprises a memory for storing on-screen display information, and a display-side communication section for transmitting the on-screen display information,

wherein said host apparatus comprises a host-side communication section for receiving the on-screen display information transmitted by said display apparatus, and an information superimposing section for superimposing the received on-screen display information on the video signal, and

wherein in said display system, said host-side communication section transmits the video signal having the on-screen display information superimposed thereon, said display-side communication section receives the transmitted signal, and said display apparatus displays an image of said on-screen display information.

7. A system according to claim 6, wherein said communication interface has a specification for communication between said host-side communication section and said display-side communication section which conforms with a DDC1/DDC2B/DDC2AB standard prescribed by Video Electronics Standards Association or an expansion function thereof.

8. A system according to claim 6, wherein said display apparatus includes a mode for operating only said communication interface for communication with said host apparatus.

9. A system according to claim 6, wherein said display apparatus further comprises an indicator lamp for alarm display.

10. A system according to claim 6, wherein:

said host apparatus further comprises a first memory for storing on-screen display information thereof, and a second memory for storing the on-screen display information of said display apparatus which is received via said host-side communication section, and

said information superimposing section converts the on-screen display information stored in at least one of said first memory and said second memory into indicatable bit map information, and superimposes the indicatable bit map information on the video signal.

11. A system according to claim 6, wherein said on-screen display information comprises ASCII text data.

12. A system according to claim 6, wherein said display apparatus is adapted to be selectively connected to a plurality of types of host apparatuses.

13. A system according to claim 6, wherein said host apparatus is adapted to be selectively connected to a plurality of types of display apparatuses.

14. A system according to claim 6, wherein the display apparatus comprises a microdisplay apparatus that is wearable by a user.

15. A system according to claim 6, wherein the display apparatus comprises a microdisplay apparatus that is wearable on at least one of a head and face of a user.

16. A method for controlling a display system including a host apparatus and a display apparatus, said method comprising:

supplying at least a video signal from the host apparatus to the display apparatus to operate the display apparatus;

transmitting on-screen display information stored in the display apparatus from the display apparatus to the host apparatus;

superimposing, at the host apparatus, the on-screen display information received by the host apparatus onto the video signal that is supplied from the host apparatus to the display apparatus; and

displaying an image of the on-screen display information on the display apparatus based on the video signal having the on-screen display information superimposed thereon.