DATA PROCESSING APPARATUS AND DATA PROCESSING METHOD

• US 20130155439A1
• Filed: 12/19/2012
• Published: 06/20/2013
• Est. Priority Date: 12/19/2011
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: OKAMURA, YUKIO
• Granted Patent: US 9,030,681 B2
• Time in Patent Office: Days
• US Class Current: 358/1.13
• CPC Class Codes: H04N 1/00278 with a printing apparatus, e.g. a laser beam printer
• CPC Class Codes: H04N 1/00541 with detachable image reading apparatus
• CPC Class Codes: H04N 1/0083 Arrangements for transferring signals between different components of the apparatus, e.g. arrangements of signal lines or cables for control or supervision between image input and output device H04N1/32
• CPC Class Codes: H04N 2201/0094 Multifunctional device, i.e. a device capable of all of reading, reproducing, copying, facsimile transception, file transception

Abstract

A scanner unit changes a first wire included in a pair of wires in Low condition into High condition, sets another second wire in Low condition during the change, and identifies whether a CISM coupled with a resistor is or a CISM coupled with no resistor is by inputting a signal from the second wire afterward. Further, the controller changes the first wire in High condition into Low condition, sets the second wire in High condition during the change, and identifies the CISM by inputting a signal from the second wire. The scanner unit sets the second wire in condition before being changed while changing condition of the first wire so as to prevent an effect of a signal (crosstalk) caused when the condition of the first wire is changed more effectively.

Claims

1. A data processing apparatus which identifies a coupled device, the data processing apparatus comprising:

a controller; and

at least a pair of wires whose one end is coupled with the controller, wherein

one of a coupled device having at least a pair of signal lines and a resistor is coupled with the pair of signal lines and a coupled device having at least a pair of signal lines and no resistor is coupled with the pair of signal lines is coupled with another end of the wires, and

the controller is configured to change one of the pair of wires in fist condition into second condition, the controller being configured to set another one of the pair of wires into the first condition during the change, the controller being configured to identify the coupled device by inputting a signal from the other one of the wires afterward.

2. The data processing apparatus according to claim 1, wherein the controller repeats a process for changing one of the pair of wires in first condition into second condition, setting another one of the pair of wires in the first condition during the change and inputting a signal from the other wire afterward and a process for changing one of the pair of wires in second condition into first condition, setting another one of the pair of wires in the second condition during the change and inputting a signal from the other wire afterward, and identifies the coupled device on the basis of the signal inputted from the other wire.

3. The data processing apparatus according to claim 2, wherein the coupled device is a reading device which reads an image.

4. The data processing apparatus according to claim 1, wherein the controller carries out a process for identifying the coupled device upon being powered on, and the controller carries out control of a coupled device by using a result of the identification.

5. The data processing apparatus according to claim 1, wherein the controller provides the one of the wires with a High signal in the first condition and provides the other of the wires with a Low signal in the second condition, or wherein the controller provides the one of the wires with a Low signal in the first condition and provides the other of the wires with a High signal in the second condition.

6. A data processing method to be practiced by a data processing apparatus having a controller and at least a pair of wires whose one end is coupled with the controller, another end of the wires being coupled with one of a coupled device having at least a pair of signal lines and a resistor is coupled with the pair of signal lines and a coupled device having at least a pair of signal lines and no resistor is coupled with the pair of signal lines, the method for identifying the coupled device comprising:

changing one of the pair of wires in fist condition into second condition;

setting another one of the pair of wires into the first condition during the change, and

identifying the coupled device by inputting a signal from the other one of the wires afterward.