Display terminal

• US 20020018057A1
• Filed: 07/17/2001
• Published: 02/14/2002
• Est. Priority Date: 07/25/2000
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Sano, Eiichi
• Granted Patent: US 6,954,615 B2
• Time in Patent Office: Days
• US Class Current: 345/204
• CPC Class Codes: H04L 1/203 Details of error rate determination, e.g. BER, FER or WER
• CPC Class Codes: H04L 1/24 Testing correct operation
• CPC Class Codes: H04L 67/04 specially adapted for terminals or networks with limited capabilities; specially adapted for terminal portability
• CPC Class Codes: H04L 67/75 Indicating network or usage conditions on the user display
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols
• CPC Class Codes: H04N 21/4122 additional display device, e.g. video projector digital output for controlling a plurality of local displays G06F3/1423
• 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 21/42224 Touch pad or touch panel provided on the remote control
• CPC Class Codes: H04N 21/426 Internal components of the client ; Characteristics thereof H04N5/44 takes precedence
• CPC Class Codes: H04N 21/43637 involving a wireless protocol, e.g. Bluetooth, RF or wireless LAN [IEEE 802.11] arrangements for wireless networking or broadcasting of information in indoor or near-field type systems H04B10/114
• CPC Class Codes: H04N 21/44227 Monitoring of local network, e.g. connection or bandwidth variations; Detecting new devices in the local network configuring of peripheral devices in general G06F9/4411; monitoring connectivity in data switched networks H04L43/0811
• CPC Class Codes: H04N 21/485 End-user interface for client configuration
• CPC Class Codes: H04N 21/4882 for displaying messages, e.g. warnings, reminders arrangements for providing short real-time information to substation in data switching networks H04L12/1895
• CPC Class Codes: H04N 5/38 Transmitter circuitry for the transmission of television signals according to analogue transmission standards H04N5/14 takes precedence
• CPC Class Codes: H04W 28/00 Network traffic management; Network resource management
• CPC Class Codes: H04W 4/00 Services specially adapted for wireless communication networks; Facilities therefor
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

A display terminal and display method for a radio LAN system for receiving image data from an apparatus by radio communication and displaying an image based on the received image data on a display are disclosed. The terminal includes a bit error calculator for calculating a bit error rate per unit time of digital data received from the apparatus and a movement determination section for determining from a pattern of variation of the calculated bit error rate whether or not said display terminal is moving. Also provided is a reception quality display controller for displaying a quality level of the received data at the display terminal on the display section when it is determined that the display terminal is moving.

Claims

1. A display terminal for a radio LAN system for receiving image data from an apparatus by radio communication and displaying an image based on the received image data on a display, comprising:

a bit error calculator for calculating a bit error rate per unit time of digital data received from the apparatus;

a movement determination section for determining from a pattern of variation of the calculated bit error rate whether or not said display terminal is moving; and

a reception quality display controller for displaying a quality level of the received data at the display terminal on the display section when it is determined that the display terminal is moving.

2. The display terminal according to claim 1, wherein a 2.4 GHz band or a 5 GHz band is used as a frequency band for the radio communication.

3. The display terminal according to claim 1, wherein said reception quality display controller stops the display of the quality level of the received data when it is determined by the movement determination section that movement of the display terminal has stopped.

4. The display terminal according to claim 1, wherein the quality level of the received data is displayed as a bar graph and/or a numerical value.

5. The display terminal according to claim 4, wherein, as the calculated bit error rate decreases, a longer bar graph is displayed and/or the displayed numerical value becomes higher.

6. A display terminal for a radio LAN system for receiving image data from an apparatus by radio communication and displaying an image based on the received image data on a display, comprising:

a bit error calculator for calculating a bit error rate per unit time of digital data received from the apparatus;

a reception quality supervisor for comparing the calculated bit error rate with a threshold value; and

a reception quality display controller for displaying a quality level of the received data at the display terminal on the display in accordance with on an output of said reception quality supervisor.

7. The display terminal according to claim 6, wherein a 2.4 GHz band or a 5 GHz band is used as a frequency band for the radio communication.

8. The display terminal according to claim 6, wherein the reception quality display controller displays the quality level of the received data at said display terminal based on the output of said reception quality supervision section only when said reception quality display control section is set to a display-on state.

9. The display terminal according to claim 6, wherein said reception quality display controller displays a variation of the quality level of the received data at the display terminal continuously with respect to time as a bar graph and/or a numerical value in accordance with the output of said reception quality supervisor on said display.

10. The display terminal according to claim 9, wherein when the calculated bit error rate is equal to the threshold value the bar graph is displayed with a reference length or the numerical value is displayed with a reference value, and when the calculated bit error rate is lower than the threshold value, a longer bar graph is displayed or a higher numerical value is displayed.

11. The display terminal according to claim 6, wherein said reception quality display controller continuously displays a variation of the quality level of the received data at the display terminal with respect to time as plotting information in accordance with the output of said reception quality supervisor.

12. The display terminal according to claim 6, wherein the threshold value is variable in response to a type of digital data received from the different apparatus.

14. The apparatus of claim 13, wherein one of said plurality of threshold values corresponds to the receipt of a high quality data.

15. The apparatus of claim 13, wherein one of said plurality of threshold values corresponds to the receipt of a low quality data.

17. The display method according to claim 16, wherein a 2.4 GHz band or a 5 GHz band is used as a frequency band for the radio communication.

18. The display method according to claim 16, wherein the display of the quality level of the received data is stopped when it is determined that movement of the display terminal has stopped.

19. The display method according to claim 16, wherein the quality level of the received data is displayed as a bar graph and/or a numerical value.

20. The display method according to claim 19, wherein, as the calculated bit error rate decreases, a longer bar graph is displayed and/or the displayed numerical value becomes higher.

13. A display terminal for a radio LAN system for receiving image data from an apparatus by radio communication and displaying an image based on the received image data on a display, comprising:

a bit error calculator for calculating a bit error rate per unit time of digital data received from the apparatus;

a reception quality supervisor for comparing the calculated bit error rate with one of a plurality of threshold values, said one of said plurality of threshold values being selected in accordance with a type of data to be received by the display terminal; and

a reception quality display controller for displaying a quality level of the received data at the display terminal on the display in accordance with on an output of said reception quality supervision section.

16. A method for displaying an image based on a received image data on a display terminal for a radio LAN system for receiving image data from an apparatus by radio communication, comprising the steps of:

calculating a bit error rate per unit time of digital data received from the apparatus;

determining from a pattern of variation of the calculated bit error rate whether or not said display terminal is moving; and

displaying a quality level of the received data at the display terminal on the display section when it is determined that the display terminal is moving.

21. A method for displaying an image based on a received image data on a display terminal for a radio LAN system for receiving image data from an apparatus by radio communication, comprising the steps of:

calculating a bit error rate per unit time of digital data received from the apparatus;

comparing the calculated bit error rate with a threshold value; and

displaying a quality level of the received data at the display terminal-on the display in accordance with the compared calculated bit error rate and threshold value on an output of said reception quality supervisor.

22. The display method according to claim 21, wherein a 2.4 GHz band or a 5 GHz band is used as a frequency band for the radio communication.

23. The display method according to claim 21, wherein the quality level of the received data at said display terminal is displayed based upon said compared calculated error bit rate only when said reception quality display control section is set to a display-on state.

24. The display method according to claim 21, wherein a variation of the quality level of the received data at the display terminal is continuously displayed with respect to time as a bar graph and/or a numerical value in accordance with said compared calculated error bit rate.

25. The display method according to claim 24, wherein when the calculated bit error rate is equal to the threshold value the bar graph is displayed with a reference length or the numerical value is displayed with a reference value, and when the calculated bit error rate is lower than the threshold value, a longer bar graph is displayed or a higher numerical value is displayed.

26. The display method according to claim 21, wherein a variation of the quality level of the received data at the display terminal with respect to time is displayed as plotting information.

27. The display method according to claim 21, wherein the threshold value is variable in response to a type of digital data received from the different apparatus.

29. The method of claim 28, wherein one of said plurality of threshold values corresponds to the receipt of a high quality data.

30. The method of claim 28, wherein one of said plurality of threshold values corresponds to the receipt of a low quality data.

28. A method for displaying an image based on a received image data on a display terminal for a radio LAN system for receiving image data from an apparatus by radio communication, comprising the steps of:

calculating a bit error rate per unit time of digital data received from the apparatus;

selecting one of said plurality of threshold values in accordance with a type of data to be received by the display terminal;

comparing the calculated bit error rate with one of a plurality of threshold values; and

displaying a quality level of the received data at the display terminal in accordance with the calculated bit error rate per unit time of the digital data received by the display apparatus.