# US 2014/0191850 A1 · Reader control system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0191850 A1 - Document ID: US20140191850A1 - Status: Published application - Kind: A1 - Application number: 14/207,170 - Filed: 2014-03-12 - Published: 2014-07-10 - Earliest claimed: 2005-04-25 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Seung Hyup RYOO; Jin Tae KIM; Sang Cheol MIN; Hee Seung KIM; Jae Joon PARK; Dong Hyun LEE; Yong Sam KIM - Web page: https://patentgrep.com/patent/US20140191850A1 ## CPC - G06K 7/10366: {the interrogation device being adapted for miscellaneous applications} - G06K 7/0008: {General problems related to the reading of electronic memory record carriers, independent of its reading method, e.g. power transfer} - G06K 7/10297: {arrangements for handling protocols designed for non-contact record carriers such as RFIDs NFCs, e.g. ISO/IEC 14443 and 18092 (cryptographic protocols H04L9/00; network security protocols H04L63/00; real-time communication protocols in data switching networks H04L65/00; network protocols for data switching network services H04L67/00)} - G06Q 20/352: {Contactless payments by cards} - G07F 7/0893: {the card reader reading the card in a contactless manner} - H04M 1/72409: by interfacing with external accessories (hands-free H04M1/60) - H04L 69/03: {Protocol definition or specification (protocol conformance testing H04L1/244)} - H04M 1/72412: using two-way short-range wireless interfaces - H04W 4/12: Messaging; Mailboxes; Announcements - H04W 80/00: Wireless network protocols or protocol adaptations to wireless operation - G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS - G06Q: INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR - G07F: COIN-FREED OR LIKE APPARATUS (coin sorting G07D3/00; coin testing G07D5/00; {handling coins or paper currencies apart from payment activated apparatus G07D; payment architectures, schemes or protocols G06Q20/00}) - H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08) - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract An RFID reader control system and method is provided. A protocol for controlling an RFID reader and an RFID reader control unit of a mobile phone is defined. Messages, information, commands, responses, and notification are constructed and transmitted between the RFID reader and the RFID reader control unit. ## Claims ### Claim 1 A method for performing a specific operation, the method performed by a reading device and comprising: transmitting a command for performing the specific operation, the command including a code value identifying a type of the command and a plurality of select parameters, and the specific operation being related to a selection of a tag device; selecting at least one of the tag device based on the plurality of the select parameters; and transmitting a reading command, the reading command allowing the reading device to read an identifier of the tag device, and the identifier identifying the tag device uniquely, wherein the plurality of the select parameters include a section field, a start address field, a length field, and a comparison value, and wherein the section field specifies an specific memory area of the tag device, the start address field specifies a start point of the specific memory area of the tag device, the length field specifies a length from the start point, the comparison value includes a bit to be compared with target information, the target information being obtained based on the start address field and the length field. ### Claim 2 (depends on 1) The method of claim 1, wherein the section field include at least one of a unique item identifier, the identifier of the tag device and user-defined memory. ### Claim 3 (depends on 1) The method of claim 1, wherein, when the reading command is successfully performed, a reading response includes a payload field having a variable length. ### Claim 4 A reading device for performing a specific operation, comprising: an interface unit configured to transmit/receive data a controller configured to: transmit a command for performing the specific operation, the command including a code value identifying a type of the command and a plurality of select parameters, and the specific operation being related to a selection of a tag device; select at least one of the tag device based on the plurality of the select parameters; and transmit a reading command, the reading command allowing the reading device to read an identifier of the tag device, and the identifier identifying the tag device uniquely, wherein the plurality of the select parameters include a section field, a start address field, a length field, and a comparison value, and wherein the section field specifies an specific memory area of the tag device, the start address field specifies a start point of the specific memory area of the tag device, the length field specifies a length from the start point, the comparison value includes a bit to be compared with target information, the target information being obtained based on the start address field and the length field. ### Claim 5 (depends on 4) The reading device of claim 4, wherein the section field include at least one of a unique item identifier, the identifier of the tag device and user-defined memory. ### Claim 6 (depends on 4) The reading device of claim 4, wherein, when the reading command is successfully performed, a reading response includes a payload field having a variable length.