TCL’S INVALIDITY CONTENTIONS FOR U.S. 8,713,206
`Exhibit E6: U.S. Patent No. 8,078,766 (“Takenaka”)
`
`
`As demonstrated in the claim charts below, the claims of U.S. Patent No. 8,713,206 (“the ’206 patent”) are invalid (a) under one or
`more sections of 35 U.S.C. § 102 as anticipated by Takenaka and (b) under 35 U.S.C. § 103(a) as obvious over Takenaka standing
`alone and as set forth herein, and/or combined with the knowledge of a person of ordinary skill in the art, Applicant’s Admitted Prior
`Art (“AAPA”), and/or the additional prior art references discussed in Exhibits E1-E14, and O5, the contents of which are hereby
`incorporated by reference into this chart. One of ordinary skill in the art, as of the alleged priority date of the ’206 patent, would have
`known to combine the prior art elements disclosed by the foregoing references using known methods, and to use these elements
`according to their established functions in order to achieve a known and predictable result.
`
`Except where specifically noted otherwise, this chart may apply the apparent interpretations of claim language as used by Plaintiff in
`its infringement contentions. Such use, however, does not imply that Defendants adopt or agree with Plaintiff’s interpretations in any
`way. Additionally, by providing contentions for claim preamble elements, Defendants do not take a position on whether the preamble
`is a claim limitation.
`
`
`
`Prior Art: U.S. Pat. No. 8,078,766 (“Takenaka”)
`
`Takenaka discloses a display control apparatus.
`See, e.g., elements 1.a – 1.c.
`Takenaka discloses a communication unit configured to communicate with an external device.
`For example, Takenaka discloses:
`4:35-40 (“The image changeover unit 131 is connected to an external input terminal 123, through
`which an external device transmits any image signal VSc such as a composite signal, a component
`signal, high definition multimedia interface (HDMI) signal, digital visual interface (DVI) signal, to the
`image changeover unit 131.”)
`6:20-31 (“A USB interface unit 153 is also connected to the bus 154. The USB interface unit 153 is
`constituted of a USB transceiver for executing any serial communication with connected external
`device, serial interface engine (SIE) for executing communication control processing corresponding to
`USB protocol, and the like. The control unit 151 communicates the USB interface unit 153 and when
`detecting that an external device connects the USB interface unit 153, the control unit 151 executes a
`configuration setting to read out address setting of the connected external device and various kinds of
`pieces of information stored in the connected external device.”); see also 6:42-52.
`
`Claim Element
`
`’206
`Claim
`1.pre A display control apparatus
`comprising:
`
`1.a
`
`a communication unit
`configured to communicate
`with an external device; and
`
`
`
`1
`
`Page 1 of 16
`
`CANON EXHIBIT 2005
`Roku, Inc. v. Canon Kabushiki Kaisha
`IPR2020-00343
`
`

`

`1.b
`
`a display control unit
`configured to display, on a
`display unit, an image
`received from the external
`device via the communication
`unit, and if communication
`with the external device is
`disconnected, to stop the
`display of the image received
`from the external device,
`
`Takenaka discloses a display control unit configured to display, on a display unit, an image received
`from the external device via the communication unit, and if communication with the external device is
`disconnected, to stop the display of the image received from the external device.
`For example, Takenaka discloses:
`5:20-24 (“The image-output-processing unit 135 is connected to an image display unit 136 which is
`constituted of any display device such as liquid crystal display (LCD), plasma display panel (PDP),
`electro luminescence (EL), and cathode ray tube. The image-output-processing unit 135 generates a
`display drive signal DRv for driving the display device based on the image output signal VSg and
`supplies the display drive signal DRv to the image display unit 136. This enables the image display
`unit 136 to display an image. The image-output-processing unit 135 outputs the image output signal
`VSg as an output signal Vout having any format corresponding to an external device, not shown, when
`the image-output-processing unit 135 supplies an image signal to the external device.”); see also FIG.
`1, 3:15-33
`5:28-33 (“The image-output-processing unit 135 outputs the image output signal VSg as an output
`signal Vout having any format corresponding to an external device, not shown, when the image-
`output-processing unit 135 supplies an image signal to the external device.”)
`6:26-38 (“The control unit 151 communicates the USB interface unit 153 and when detecting that an
`external device connects the USB interface unit 153, the control unit 151 executes a configuration
`setting to read out address setting of the connected external device and various kinds of pieces of
`information stored in the connected external device. When detecting that an external device is USB
`device that can correspond to the apparatus of displaying the image (the television receiver) based on
`the read information, the control unit 151 communicates this external device to read the image data
`VSusb out of the external device and supply it to the image changeover unit 131, thereby enabling
`image stored in the external device to be displayed on the image display unit 136.”); see also 6:20-25.
`6:42-52 (“At step ST1, the control unit 151 determines whether or not the television receiver 100
`connects an external device. When the control unit 151 determines that the television receiver 100
`connects the external device, the operation goes to step ST2. When the control unit 151 determines
`that the television receiver 100 connects no external device, the operation goes back to the step ST1. It
`is to be noted that the control unit 151 may determine whether or not the television receiver 100
`connects an external device based on facts whether or not a D+terminal or a D-terminal of USB
`connector provided in the USB interface unit 153 has a predetermined voltage level.”); see also FIG.
`2.
`
`2
`
`Page 2 of 16
`
`

`

`8:25-29 (“At the step ST7, the control unit 151 determines whether or not the external device has
`image class. If the class checked at the step ST5 is included in the image class, namely, its device class
`code is “00h” and its interface class code is “06h”, the operation goes to step ST8. (YES)”);
`8:61-9:4 (“At the step ST11, the control unit 151 determines whether or not the connection of the
`external device has been released. If the external device keeps on connecting the television receiver
`100, the operation goes back to the step ST11 where the message PM3 keeps on displaying. If the
`connection of the external device has been released, for example, a USB cable has been released from
`a USB connector in the USB interface unit 153 or a USB connector in the external device, the
`operation goes to step ST15 where the control unit 151 finishes displaying the indication. The
`operation then goes back to the step ST1.”); see also FIGs. 1, 2, 4, 6
`10:6-18 (“At the step ST16, the television receiver 100 displays any noncorresponding notice and
`displays, for example, a message PM5 as shown in FIG. 3F to notice the user that the connected
`external device is not USB device that can correspond to the apparatus of displaying the image (the
`television receiver 100). At the step ST17, the control unit 151 determines whether or not the
`connection of the external device has been released. If the external device keeps on connecting the
`television receiver 100, the operation goes back to the step ST17. If the connection of the external
`device has been released, the operation goes to step ST18. At the step ST18, the control unit 151
`finishes displaying the notice.”)
`10:39-45 (“When the class of the external device is not changeable and a set class of the external
`device is different from the previously specified class of the apparatus of displaying the image (the
`television receiver 100), the television receiver 100 displays on its image display unit 136 a message
`noticing that the television receiver 100 does not correspond to the connected external device.”).
`To the extent that Plaintiff alleges that Takenaka does not explicitly disclose this claim limitation, this
`limitation is inherent and/or it would have been obvious in view of the knowledge of a person of
`ordinary skill in the art, AAPA, and/or in view of the references identified in Exhibits E1-E14, and O5.
`To the extent 35 U.S.C. § 112, ¶6 applies, Takenaka also discloses the corresponding structure(s) and
`function(s) claimed or their equivalents, as shown above, or renders them obvious in view of the
`knowledge of one skilled in the art.
`Takenaka discloses that the display control unit varies a period of time from the disconnection to the
`stopping of the display of the image depending on a type of the external device.
`See, e.g., element 1.b.
`In addition, Takenaka discloses:
`
`3
`
`1.c
`
`wherein the display control
`unit varies a period of time
`from the disconnection to the
`stopping of the display of the
`
`Page 3 of 16
`
`

`

`image depending on a type of
`the external device.
`
`2.pre
`
`2.a
`
`The display control apparatus
`according to claim 1,
`wherein the display control
`unit stops the display of the
`image immediately or after a
`specific period of time
`elapses from the
`disconnection depending on a
`type of the external device.
`
`2:15-41 (“According to an embodiment of the present invention, there is provided an apparatus of
`displaying an image that connects an external device by using USB connection. The apparatus of
`displaying an image contains a display unit and a control unit that reads device information out of the
`connected external device and performs display control on the display unit based on the read device
`information. Under control of the control unit, the display unit displays a message that is used for
`changing a class of the external device to a class previously specified in the apparatus of displaying the
`image when the class of the external device is changeable and it is determined based on the device
`information that the set class of the external device is different from the class previously specified in
`the apparatus of displaying the image. According to another embodiment of the present invention,
`there is provided a method of displaying an image in an apparatus of displaying an image that connects
`an external device by using USB connection. The method contains the steps of reading device
`information out of the external device, and displaying a message that is used for changing a class of
`the external device to a class previously specified in the apparatus of displaying the image when the
`class of the external device is changeable and it is determined based on the device information that the
`set class of the external device is different from the class previously specified in the apparatus of
`displaying the image.”)
`To the extent that Plaintiff alleges that Takenaka does not explicitly disclose this claim limitation, this
`limitation is inherent and/or it would have been obvious in view of the knowledge of a person of
`ordinary skill in the art, AAPA, and/or in view of the references identified in Exhibits E1-E14, and O5.
`To the extent 35 U.S.C. § 112, ¶6 applies, Takenaka also discloses the corresponding structure(s) and
`function(s) claimed or their equivalents, as shown above, or renders them obvious in view of the
`knowledge of one skilled in the art.
`Defendants incorporate by reference their contentions relating to claim 1, as if fully set forth herein.
`
`Takenaka discloses that the display control unit stops the display of the image immediately or after a
`specific period of time elapses from the disconnection depending on a type of the external device.
`For example, Takenaka discloses:
`5:28-33 (“The image-output-processing unit 135 outputs the image output signal VSg as an output
`signal Vout having any format corresponding to an external device, not shown, when the image-
`output-processing unit 135 supplies an image signal to the external device.”)
`5:64-6:19 (“The control unit 151 also connects the above-mentioned various units through a bus 154.
`The control unit 151 generates the control signal CT based on the manipulation signal PS received
`from the user interface unit 152 and supplies the control signal CT to the above-mentioned various
`
`4
`
`Page 4 of 16
`
`

`

`units through a bus 154, which enables the television receiver 100 to operate corresponding to the
`user's manipulations. For example, when the manipulation signal PS received from the user interface
`unit 152 indicates that the user manipulates any signal changeover such as channel changeover,
`broadcast changeover, or input changeover, the control unit 151 controls the tuning/demodulation unit
`112 for satellite broadcasting and the tuning/demodulation unit 114 for terrestrial broadcasting to
`select a desired channel thereof or controls the demultiplexer 121, the image changeover unit 131, and
`the audio changeover unit 141 to perform their changeover operations, in order to enable to be
`presented image and/or audio of the desired channel or the desired broadcast system, or image and/or
`audio received from an external device. The control unit 151 further generates a control signal for
`displaying EPG or the like based on the broadcast data DTd received from the demultiplexer 121 and
`supplies such the control signal to the signal-generating unit 133.”)
`8:8-14 (“At the step ST6, the control unit 151 determines whether or not the external device has mass
`storage class. If the class checked at the step ST5 is included in the mass storage class, namely, its
`device class code is “00h” and its interface class code is “08h”, the operation goes to step ST9. If the
`class checked at the step ST5 is not included in the mass storage class, the operation goes back to step
`ST7.”)
`8:61-9:4 (“At the step ST11, the control unit 151 determines whether or not the connection of the
`external device has been released. If the external device keeps on connecting the television receiver
`100, the operation goes back to the step ST11 where the message PM3 keeps on displaying. If the
`connection of the external device has been released, for example, a USB cable has been released from
`a USB connector in the USB interface unit 153 or a USB connector in the external device, the
`operation goes to step ST15 where the control unit 151 finishes displaying the indication. The
`operation then goes back to the step ST1.”)
`9:30-35 (“At the step ST12, the control unit 151 determines whether or not the external device has a
`vender specific class. If the class checked at the step ST5 is included in the vendor specific class, the
`operation goes to step ST13. If the class checked at the step ST5 is not included in the vendor specific
`class, the operation goes to step ST16.”)
`9:51-57 (“Thus, when the user performs class changeover on the external device based on the
`connection-setting change indication display to set its class to the mass storage class and try again to
`connect the external 1 device to the television receiver 100, the television receiver 100 can recognizes
`that the connected external device is USB device that can correspond to the television receiver 100.
`This enables the USB device and the apparatus of displaying the image (the television receiver 100) to
`be connected to each other in the mass storage class.”)
`
`5
`
`Page 5 of 16
`
`

`

`3.pre
`
`3.a
`
`The display control apparatus
`according to claim 1,
`wherein if the communication
`with the external device is
`physically disconnected, the
`display control unit stops the
`display of the image after a
`predetermined first period of
`time elapses.
`
`10:6-11 (“At the step ST16, the television receiver 100 displays any noncorresponding notice and
`displays, for example, a message PM5 as shown in FIG. 3F to notice the user that the connected
`external device is not USB device that can correspond to the apparatus of displaying the image (the
`television receiver 100).”); see also 10:43-49.
`10:39-45 (“When the class of the external device is not changeable and a set class of the external
`device is different from the previously specified class of the apparatus of displaying the image (the
`television receiver 100), the television receiver 100 displays on its image display unit 136 a message
`noticing that the television receiver 100 does not correspond to the connected external device.”)
`To the extent that Plaintiff alleges that Takenaka does not explicitly disclose this claim limitation, this
`limitation is inherent and/or it would have been obvious in view of the knowledge of a person of
`ordinary skill in the art, AAPA, and/or in view of the references identified in Exhibits E1-E14, and O5.
`To the extent 35 U.S.C. § 112, ¶6 applies, Takenaka also discloses the corresponding structure(s) and
`function(s) claimed or their equivalents, as shown above, or renders them obvious in view of the
`knowledge of one skilled in the art.
`Defendants incorporate by reference their contentions relating to claim 1, as if fully set forth herein.
`
`Takenaka discloses that if the communication with the external device is physically disconnected, the
`display control unit stops the display of the image after a predetermined first period of time elapses.
`For example, Takenaka discloses:
`6:42-52 (“At step ST1, the control unit 151 determines whether or not the television receiver 100
`connects an external device. When the control unit 151 determines that the television receiver 100
`connects the external device, the operation goes to step ST2. When the control unit 151 determines
`that the television receiver 100 connects no external device, the operation goes back to the step ST1. It
`is to be noted that the control unit 151 may determine whether or not the television receiver 100
`connects an external device based on facts whether or not a D+terminal or a D-terminal of USB
`connector provided in the USB interface unit 153 has a predetermined voltage level.”); see also FIG.
`2.
`To the extent that Plaintiff alleges that Takenaka does not explicitly disclose this claim limitation, this
`limitation is inherent and/or it would have been obvious in view of the knowledge of a person of
`ordinary skill in the art, AAPA, and/or in view of the references identified in Exhibits E1-E14, and O5.
`
`6
`
`Page 6 of 16
`
`

`

`4.pre
`
`4.a
`
`The display control apparatus
`according to claim 3,
`wherein if the communication
`with the external device is
`logically disconnected, the
`display control unit stops the
`display of the image after a
`predetermined second period
`of time elapses, the
`predetermined second period
`of time being longer than the
`predetermined first period of
`time.
`
`To the extent 35 U.S.C. § 112, ¶6 applies, Takenaka also discloses the corresponding structure(s) and
`function(s) claimed or their equivalents, as shown above, or renders them obvious in view of the
`knowledge of one skilled in the art.
`Defendants incorporate by reference their contentions relating to claim 3, as if fully set forth herein.
`
`Takenaka discloses that if the communication with the external device is logically disconnected, the
`display control unit stops the display of the image after a predetermined second period of time elapses,
`the predetermined second period of time being longer than the predetermined first period of time.
`For example, Takenaka discloses:
`6:42-52 (“At step ST1, the control unit 151 determines whether or not the television receiver 100
`connects an external device. When the control unit 151 determines that the television receiver 100
`connects the external device, the operation goes to step ST2. When the control unit 151 determines
`that the television receiver 100 connects no external device, the operation goes back to the step ST1. It
`is to be noted that the control unit 151 may determine whether or not the television receiver 100
`connects an external device based on facts whether or not a D+terminal or a D-terminal of USB
`connector provided in the USB interface unit 153 has a predetermined voltage level.”); see also FIG.
`2.
`7:40-62 (“FIG. 4 shows the device information of “DEVICE DESCRIPTOR”. The “DEVICE
`DESCRIPTOR” is constituted of various kinds of pieces of information relative to a version of the
`corresponding USB specification, a device class, a device subclass, a protocol, a vender identification
`(ID), a product ID, a device release number, an index of manufacturer, an index of product, an index
`of serial number, and the like. FIG. 5 shows the device information of “INTERFACE DESCRIPTOR”.
`The “INTERFACE DESCRIPTOR” is constituted of various kinds of pieces of information relative to
`a number of an interface, an interface class, an interface subclass, an interface protocol, and the like,
`which are used for selecting the interface. At the step ST5, the television receiver 100 checks a class of
`the connected external device. The control unit 151 checks the class of the connected external device
`based on the “DEVICE DESCRIPTOR” and the “INTERFACE DESCRIPTOR”. The operation then
`goes to step ST6. FIG. 6 shows a class specification and class codes. The class specification contains
`an audio interface class, a communication device class, a human interface device (HID) class, a still
`image capture device (SICD) class, a printer class, and a mass storage class.”)
`To the extent that Plaintiff alleges that Takenaka does not explicitly disclose this claim limitation, this
`limitation is inherent and/or it would have been obvious in view of the knowledge of a person of
`ordinary skill in the art, AAPA, and/or in view of the references identified in Exhibits E1-E14, and O5.
`
`7
`
`Page 7 of 16
`
`

`

`5.pre
`
`5.a
`
`The display control apparatus
`according to claim 1,
`wherein the communication
`unit is connected with the
`external device via a physical
`communication interface.
`
`7.pre A display control apparatus
`comprising:
`
`To the extent 35 U.S.C. § 112, ¶6 applies, Takenaka also discloses the corresponding structure(s) and
`function(s) claimed or their equivalents, as shown above, or renders them obvious in view of the
`knowledge of one skilled in the art.
`Defendants incorporate by reference their contentions relating to claim 1, as if fully set forth herein.
`
`Takenaka discloses that the communication unit is connected with the external device via a physical
`communication interface.
`For example, Takenaka discloses:
`6-26-38 (“The control unit 151 communicates the USB interface unit 153 and when detecting that an
`external device connects the USB interface unit 153, the control unit 151 executes a configuration
`setting to read out address setting of the connected external device and various kinds of pieces of
`information stored in the connected external device. When detecting that an external device is USB
`device that can correspond to the apparatus of displaying the image (the television receiver) based on
`the read information, the control unit 151 communicates this external device to read the image data
`VSusb out of the external device and supply it to the image changeover unit 131, thereby enabling
`image stored in the external device to be displayed on the image display unit 136.”)
`6:42-52 (“At step ST1, the control unit 151 determines whether or not the television receiver 100
`connects an external device. When the control unit 151 determines that the television receiver 100
`connects the external device, the operation goes to step ST2. When the control unit 151 determines
`that the television receiver 100 connects no external device, the operation goes back to the step ST1. It
`is to be noted that the control unit 151 may determine whether or not the television receiver 100
`connects an external device based on facts whether or not a D+terminal or a D-terminal of USB
`connector provided in the USB interface unit 153 has a predetermined voltage level.”); see also FIG.
`2.
`To the extent that Plaintiff alleges that Takenaka does not explicitly disclose this claim limitation, this
`limitation is inherent and/or it would have been obvious in view of the knowledge of a person of
`ordinary skill in the art, AAPA, and/or in view of the references identified in Exhibits E1-E14, and O5.
`To the extent 35 U.S.C. § 112, ¶6 applies, Takenaka also discloses the corresponding structure(s) and
`function(s) claimed or their equivalents, as shown above, or renders them obvious in view of the
`knowledge of one skilled in the art.
`Takenaka discloses a display control apparatus.
`See, e.g., elements 7.a – 7.c.
`
`8
`
`Page 8 of 16
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`

`

`7.a
`
`a communication unit
`configured to communicate
`with an external device; and
`
`7.b
`
`7.c
`
`a display control unit
`configured to display, on a
`display unit, an image
`received from the external
`device via the communication
`unit, and if communication
`with the external device is
`disconnected, to stop the
`display of the image received
`from the external device,
`
`wherein the display control
`unit varies a period of time
`from the disconnection to the
`stopping of the display of the
`image depending on a
`determination result as to
`whether the disconnection of
`the communication with the
`external device is a physical
`disconnection or a logical
`disconnection.
`
`Takenaka discloses a communication unit configured to communicate with an external device.
`For example, Takenaka discloses:
`See, e.g., element 1.a.
`To the extent that Plaintiff alleges that Takenaka does not explicitly disclose this claim limitation, this
`limitation is inherent and/or it would have been obvious in view of the knowledge of a person of
`ordinary skill in the art, AAPA, and/or in view of the references identified in Exhibits E1-E14, and O5.
`To the extent 35 U.S.C. § 112, ¶6 applies, Takenaka also discloses the corresponding structure(s) and
`function(s) claimed or their equivalents, as shown above, or renders them obvious in view of the
`knowledge of one skilled in the art.
`Takenaka discloses a display control unit configured to display, on a display unit, an image received
`from the external device via the communication unit, and if communication with the external device is
`disconnected, to stop the display of the image received from the external device.
`See, e.g., element 1.b.
`To the extent that Plaintiff alleges that Takenaka does not explicitly disclose this claim limitation, this
`limitation is inherent and/or it would have been obvious in view of the knowledge of a person of
`ordinary skill in the art, AAPA, and/or in view of the references identified in Exhibits E1-E14, and O5.
`To the extent 35 U.S.C. § 112, ¶6 applies, Takenaka also discloses the corresponding structure(s) and
`function(s) claimed or their equivalents, as shown above, or renders them obvious in view of the
`knowledge of one skilled in the art.
`Takenaka discloses that he display control unit varies a period of time from the disconnection to the
`stopping of the display of the image depending on a determination result as to whether the
`disconnection of the communication with the external device is a physical disconnection or a logical
`disconnection.
`See, e.g., elements 4.a, 7.b.
`In addition, Takenaka discloses:
`2:15-41 (“According to an embodiment of the present invention, there is provided an apparatus of
`displaying an image that connects an external device by using USB connection. The apparatus of
`displaying an image contains a display unit and a control unit that reads device information out of the
`connected external device and performs display control on the display unit based on the read device
`information. Under control of the control unit, the display unit displays a message that is used for
`changing a class of the external device to a class previously specified in the apparatus of displaying the
`
`9
`
`Page 9 of 16
`
`

`

`image when the class of the external device is changeable and it is determined based on the device
`information that the set class of the external device is different from the class previously specified in
`the apparatus of displaying the image. According to another embodiment of the present invention,
`there is provided a method of displaying an image in an apparatus of displaying an image that connects
`an external device by using USB connection. The method contains the steps of reading device
`information out of the external device, and displaying a message that is used for changing a class of
`the external device to a class previously specified in the apparatus of displaying the image when the
`class of the external device is changeable and it is determined based on the device information that the
`set class of the external device is different from the class previously specified in the apparatus of
`displaying the image.”)
`To the extent that Plaintiff alleges that Takenaka does not explicitly disclose this claim limitation, this
`limitation is inherent and/or it would have been obvious in view of the knowledge of a person of
`ordinary skill in the art, AAPA, and/or in view of the references identified in Exhibits E1-E14, and O5.
`To the extent 35 U.S.C. § 112, ¶6 applies, Takenaka also discloses the corresponding structure(s) and
`function(s) claimed or their equivalents, as shown above, or renders them obvious in view of the
`knowledge of one skilled in the art.
`Defendants incorporate by reference their contentions relating to claim 7, as if fully set forth herein.
`
`Takenaka discloses that the display control unit stops the display of the image immediately or after a
`specific period of time elapses from the disconnection depending on a determination result as to
`whether the disconnection of the communication with the external device is a physical disconnection
`or a logical disconnection.
`For example, Takenaka discloses:
`5:28-33 (“The image-output-processing unit 135 outputs the image output signal VSg as an output
`signal Vout having any format corresponding to an external device, not shown, when the image-
`output-processing unit 135 supplies an image signal to the external device.”)
`5:64-6:19 (“The control unit 151 also connects the above-mentioned various units through a bus 154.
`The control unit 151 generates the control signal CT based on the manipulation signal PS received
`from the user interface unit 152 and supplies the control signal CT to the above-mentioned various
`units through a bus 154, which enables the television receiver 100 to operate corresponding to the
`user's manipulations. For example, when the manipulation signal PS received from the user interface
`unit 152 indicates that the user manipulates any signal changeover such as channel changeover,
`broadcast changeover, or input changeover, the control unit 151 controls the tuning/demodulation unit
`
`10
`
`8.pre
`
`8.a
`
`The display control apparatus
`according to claim 7,
`wherein the display control
`unit stops the display of the
`image immediately or after a
`specific period of time
`elapses from the
`disconnection depending on a
`determination result as to
`whether the disconnection of
`the communication with the
`external device is a physical
`disconnection or a logical
`disconnection.
`
`Page 10 of 16
`
`

`

`112 for satellite broadcasting and the tuning/demodulation unit 114 for terrestrial broadcasting to
`select a desired channel thereof or controls the demultiplexer 121, the image changeover unit 131, and
`the audio changeover unit 141 to perform their changeover operations, in order to enable to be
`presented image and/or audio of the desired channel or the desired broadcast system, or image and/or
`audio received from an external device. The control unit 151 further generates a control signal for
`displaying EPG or the like based on the broadcast data DTd received from the demultiplexer 121 and
`supplies such the control signal to the signal-generating unit 133.”)
`8:8-14 (“At the step ST6, the control unit 151 determines whether or not the external device has mass
`storage class. If the class checked at the step ST5 is included in the mass storage class, namely, its
`device class code is “00h” and its interface class code is “08h”, the operation goes to step ST9. If the
`class checked at the step ST5 is not included in the mass storage class, the operation goes back to step
`ST7.”)
`8:61-9:4 (“At the step ST11, the control unit 151 determines whether or not the connection of the
`external device h