# US 7,746,329 B2 · Display apparatus and a method of controlling the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,746,329 B2 - Document ID: US7746329B2 - Status: Granted - Kind: B2 - Application number: 11/000,999 - Filed: 2004-12-02 - Published: 2005-06-02 - Granted: 2010-06-29 - Earliest claimed: 2003-12-02 - Assignees: Samsung Electronics Co., Ltd. - Inventors: Young-chan Kim; Mi-sook Jang - Web page: https://patentgrep.com/patent/US7746329B2 ## CPC - G06F 3/14: Digital output to display device {; Cooperation and interconnection of the display device with other functional units} - G09G 2330/08: Fault-tolerant or redundant circuits, or circuits in which repair of defects is prepared - G09G 2370/04: Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller - G09G 2370/042: for monitor identification - G09G 2370/047: using display data channel standard [DDC] communication - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) ## Abstract A display apparatus include a connector, a readable/writable EDID storage to store EDID, and a controller to control the EDID storage to be write-protected from error data transmitted from a computer through the connector. With this configuration, the display apparatus and a method of controlling the same can prevent error data from being stored in an EDID storage. ## Claims ### Claim 1 A display apparatus to communicate with a computer, comprising: a connector to generate a determining signal; a readable/writable EDID storage to store EDID; and a controller to control the EDID storage to be write-protected from error data transmitted from the computer based on the determining signal of the connector, wherein the EDID storage comprises a write-protect (WP) port, and the controller comprises a microcomputer to transmit an enable signal or a disable signal to the WP port according to the determining signal of the connector. ### Claim 2 (depends on 1) The display apparatus according to claim 1, wherein the connector is selectively connected with a video card of the computer or an EDID storage jig to store the EDID and outputs the determining signal according to a determination of what is connected to the connector, and the controller controls the EDID storage to be write-protected from the error data when the controller determines that the video card is connected, and controls the EDID storage to store the EDID transmitted from the EDID storage jig when the controller determines that the EDID storage jig is connected, on the basis of the determining signal. ### Claim 3 (depends on 1) The display apparatus according to claim 1 wherein the controller controls the EDID storage to initialize a communication condition of the EDID storage when the controller determines that the video card is connected, on the basis of the determining signal. ### Claim 4 (depends on 3) The display apparatus according to claim 3, wherein the EDID storage comprises an I2C line port, and the controller determines whether an I2C line is accessible when the video card is connected, and transmits a driving signal to the I2C line port to initialize the communication condition of the EDID storage when the I2C line is accessible. ### Claim 5 (depends on 4) The display apparatus according to claim 4, wherein the driving signal comprises a stop condition signal to stop data transmission. ### Claim 6 (depends on 1) The display apparatus according to claim 1, wherein the EDID storage comprises a power input port to receive a display power or a computer power, and the controller controls the EDID storage to be write-protected from the error data when the controller determines that the computer power is supplied through the power input port. ### Claim 7 (depends on 6) The display apparatus according to claim 6, wherein the EDID storage comprises a WP port, and the controller comprises a current passage to connect a computer power line with the WP port. ### Claim 8 (depends on 6) The display apparatus according to claim 6, wherein the EDID storage comprises a WP port, and the controller comprises a microcomputer transmitting an enable signal or a disable signal to the WP port according to whether the computer power is supplied. ### Claim 9 (depends on 8) The display apparatus according to claim 8, wherein the controller controls the EDID storage to initialize a communication condition of the EDID storage when the controller determines that the computer power is supplied. ### Claim 10 (depends on 9) The display apparatus according to claim 9, wherein the EDID storage comprises an I2C line port, and the controller determines whether an I2C line is accessible when the computer power is supplied, and transmits a driving signal to the I2C line port to initialize the communication condition of the EDID storage when the I2C line is accessible. ### Claim 11 (depends on 10) The display apparatus according to claim 10, wherein the driving signal comprises a stop condition signal to stop data transmission. ### Claim 12 (depends on 1) The display apparatus according to claim 1, wherein the EDID storage comprises a power input port to receive a display power or a computer power; and a WP port being enabled when the computer power is supplied through the power input port, and the controller controls the EDID storage to be write-protected from the error data when the controller determines that the display power is supplied while the computer power is supplied. ### Claim 13 (depends on 12) The display apparatus according to claim 12, further comprising: a switch to switch the WP port between enable and disable modes, wherein the controller comprises a microcomputer to control the switch to enable the WP port when the controller determines that the display power is supplied. ### Claim 14 (depends on 13) The display apparatus according to claim 13, further comprising: a selector to select the WP port to be disabled, wherein the controller controls the switch to disable the WP port according to selection of the selector. ### Claim 15 (depends on 12) The display apparatus according to claim 12, wherein the controller comprises a microcomputer to output a first control signal when the display power is initially supplied while the computer power is being supplied, a first switch to output a second control signal in response to the first control signal of the microcomputer, and a second switch to switch the WP port between enable and disable modes in response to the second control signal of the first switch. ### Claim 16 A method of controlling a display apparatus comprising a connector to generate a determining signal and a readable/writable EDID storage to store EDID, the method comprising: controlling the EDID storage to be write-protected from error data transmitted from a computer based on the determining signal of the connector, wherein the controlling of the EDID storage comprises: allowing the connector to output the determining signal according to whether the connector is selectively connected with a video card of the computer or an EDID storage jig to store the EDID; and controlling the EDID storage to be write-protected from the error data when determined that the video card is connected, and controlling the EDID storage to store the EDID transmitted from the EDID storage jig when determined that the EDID storage jig is connected, on the basis of the determining signal of the connector. ### Claim 17 (depends on 16) The method according to claim 16, further comprising: controlling the EDID storage to initialize a communication condition of the EDID storage when determined that the video card is connected, on the basis of the determining signal of the connector. ### Claim 18 (depends on 16) The method according to claim 16, wherein the controlling of the EDID storage comprises controlling the EDID storage to be write-protected from the error data when determined that computer power is supplied. ### Claim 19 (depends on 18) The method according to claim 18, further comprising: controlling the EDID storage to initialize a communication condition of the EDID storage upon determining that the computer power is supplied. ### Claim 20 (depends on 16) The method according to claim 16, wherein the controlling of the EDID storage comprises: enabling a WP port when the EDID storage is supplied with computer power; and controlling the EDID storage to be write-protected from the error data transmitted from the computer upon determining that display power is supplied. ### Claim 21 (depends on 20) The method according to claim 20, further comprising: receiving a selection signal to disable the WP port; and controlling the WP port to be disabled according to the selection signal. ### Claim 22 A control unit of a readable/writeable storage unit to store data usable with a display apparatus, comprising: a connector to generate a signal; and a controller to control the readable/writable storage unit to be write-protected based on the signal received from the connector. ### Claim 23 (depends on 22) The control unit according to claim 22, wherein the storage unit is a EDID storage to store EDID. ### Claim 24 (depends on 22) The control unit according to claim 22, wherein the connector transmits a first determining signal when connected to a video card and a determining second signal when connected to an EDID storage jig. ### Claim 25 (depends on 24) The control unit according to claim 24, wherein the controller controls the storage unit to be write-protected when receiving the first determining signal and controls the storage unit to store the data when receiving the second determining signal.