# US 11,310,556 B2 · Display apparatus, display control method, and storage medium

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- Number: US 11,310,556 B2
- Document ID: US11310556B2
- Status: Granted
- Kind: B2
- Application number: 16/437,116
- Filed: 2019-06-11
- Published: 2019-12-26
- Granted: 2022-04-19
- Earliest claimed: 2018-06-21
- Assignees: Casio Computer Co., Ltd.
- Applicants: Casio Computer Co., Ltd.
- Inventors: Tomoya Makino
- Web page: https://patentgrep.com/patent/US11310556B2

## CPC

- H04N 21/43635: {HDMI}
- H04N 21/4858: {for modifying screen layout parameters, e.g. fonts, size of the windows}
- H04N 21/235: Processing of additional data, e.g. scrambling of additional data or processing content descriptors
- H04N 21/4122: {additional display device, e.g. video projector (digital output for controlling a plurality of local displays G06F3/1423)}
- H04N 21/43632: {involving a wired protocol, e.g. IEEE 1394 (high-speed IEEE 1394 serial bus H04L12/40052)}
- H04N 21/4367: Establishing a secure communication between the client and a peripheral device or smart card
- H04N 21/4424: {Monitoring of the internal components or processes of the client device, e.g. CPU or memory load, processing speed, timer, counter or percentage of the hard disk space used (error monitoring in general G06F11/30; arrangements for monitoring conditions of receiving stations in broadcast systems H04H60/32; diagnosis, testing or measuring for television receivers H04N17/04)}
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

There is provided a display apparatus which includes an input device having a plurality of video signal terminals including a digital video signal terminal, a display configured to display an input signal which is input from the input device, and a controller configured to set a search time of a digital video signal in accordance with presence or absence of power supply to a power supply terminal of the digital video signal terminal, and a connection status in a case in which the power supply is present, and configured to execute a search of the digital video signal in the search time.

## Claims

### Claim 1

A display apparatus comprising:
an input device comprising a digital video signal terminal configured to receive input of a digital video signal, to be displayed by a display, from a source device; and
a controller configured to:
determine whether power supply to a power supply terminal of the digital video signal terminal is present;
in response to determining that the power supply to the power supply terminal of the digital video signal terminal is present:
determine a stage of a plurality of stages of a connection process between the source device and the display apparatus to be completed in series prior to receiving input of the digital video signal from the source device being executed; and
set a search time of the digital video signal from amongst a plurality of search times,
wherein each of the plurality of search times is one of a plurality of extension times added to a standard search time, and
wherein the one of the plurality of extension times is selected in accordance with the stage of the connection process determined; and
execute a search of the digital video signal in the search time set.

### Claim 2 (depends on 1)

The display apparatus of claim 1,
wherein each stage of the plurality of stages includes transmission and reception of a different signal via the digital video signal terminal, and
wherein in setting the search time of the digital video signal, the controller is configured to:
set the search time to be a first predetermined search time in accordance with determining that a first stage of the plurality of stages is being executed; and
set the search time to be a second predetermined search time shorter than the first predetermined search time in accordance with determining that a second stage that is executed in series after the first stage of the plurality of stages is being executed.

### Claim 3 (depends on 2)

The display apparatus of claim 2,
wherein the plurality of stages comprises:
a stage before performing an authentication process of a copy guard;
a stage of performing the authentication process of the copy guard; and
a stage of determining presence or absence of an input of the digital video signal, executed in series in the recited order.

### Claim 4

A display control method for controlling a display apparatus comprising an input device comprising a digital video signal terminal configured to receive input of a digital video signal, to be displayed by a display, from a source device, the display control method comprising:
determining whether power supply to a power supply terminal of the digital video signal terminal is present;
in response to determining that that the power supply to the power supply terminal of the digital video signal terminal is present:
determining a stage of a plurality of stages of a connection process between the source device and the display apparatus to be completed in series prior to receiving input of the digital video signal from the source device being executed; and
setting a search time of the digital video signal from amongst a plurality of search times,
wherein each of the plurality of search times is one of a plurality of extension times added to a standard search time, and
wherein the one of the plurality of extension times is selected in accordance with the stage of the connection process determined; and
executing a search of the digital video signal in the search time set.

### Claim 5 (depends on 4)

The display control method according to claim 4,
wherein each stage of the plurality of stages includes transmission and reception of a different signal via the digital video signal terminal, and
wherein setting the search time of the digital video signal comprises:
setting the search time to be a first predetermined search time in accordance with determining that a first stage of the plurality of stages is being executed; and
setting the search time to be a second predetermined search time shorter than the first predetermined search time in accordance with determining that a second stage that is executed in series after the first stage of the plurality of stages is being executed.

### Claim 6 (depends on 5)

The display control method according to claim 5,
wherein the plurality of stages comprises:
a stage before performing an authentication process of a copy guard;
a stage of performing the authentication process of the copy guard; and
a stage of determining presence or absence of an input of the digital video signal, executed in series in the recited order.

### Claim 7

A non-transitory computer-readable storage medium having a program stored thereon for controlling a display apparatus comprising a digital video signal terminal configured to receive input of a digital video signal, to be displayed by a display, from a source device, wherein the program causes a computer to at least perform:
determining whether power supply to a power supply terminal of the digital video signal terminal is present;
in response to determining that that the power supply to the power supply terminal of the digital video signal terminal is present:
determining a stage of a plurality of stages of a connection process between the source device and the display apparatus to be completed in series prior to receiving input of the digital video signal from the source device being executed; and
setting a search time of the digital video signal from amongst a plurality of search times,
wherein each of the plurality of search times is one of a plurality of extension times added to a standard search time, and
wherein the one of the plurality of extension times is selected in accordance with the stage of the connection process determined; and
executing a search of the digital video signal in the search time set.

### Claim 8 (depends on 7)

The non-transitory computer-readable storage medium according to claim 7,
wherein each stage of the plurality of stages includes transmission and reception of a different signal via the digital video signal terminal, and
wherein setting the search time of the digital video signal comprises:
setting the search time to be a first predetermined search time in accordance with determining that a first stage of the plurality of stages is being executed; and
setting the search time to be a second predetermined search time shorter than the first predetermined search time in accordance with determining that a second stage that is executed in series after the first stage of the plurality of stages is being executed.

### Claim 9 (depends on 8)

The non-transitory computer-readable storage medium according to claim 8,
wherein the plurality of stages comprises:
a stage before performing an authentication process of a copy guard;
a stage of performing the authentication process of the copy guard; and
a stage of determining presence or absence of an input of the digital video signal, executed in series in the recited order.