# US 8,542,307 B2 · Monitor for video camera

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- Number: US 8,542,307 B2
- Document ID: US8542307B2
- Status: Granted
- Kind: B2
- Application number: 13/496,174
- Filed: 2012-01-20
- Published: 2013-07-25
- Granted: 2013-09-24
- Earliest claimed: 2012-01-20
- Assignees: Nihon Video System Co., Ltd.
- Applicants: Kentaro Hashiguchi
- Inventors: Kentaro Hashiguchi
- Web page: https://patentgrep.com/patent/US8542307B2

## CPC

- G09G 5/003: {Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto (specific for a CRT G09G1/165; for a flat panel G09G3/2092)}
- G09G 2330/12: Test circuits or failure detection circuits included in a display system, as permanent part thereof
- G09G 2370/04: Exchange of auxiliary data, i.e. other than image data, between monitor and graphics controller
- 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

There is provided a video camera monitor that is capable of turning on a tally lamp without troublesome wiring even when a video camera does not have a tally signal output terminal. The present invention provides a video camera monitor that includes a camera video input unit and a tally display controller. The camera video input unit receives a camera video signal including a REC RUN time code, and the tally display controller controls tally display. The tally display controller controls the tally display based on whether the REC RUN time code is being advanced.

## Claims

### Claim 1

A video camera monitor comprising:
a camera video input unit that receives a camera video signal including a REC RUN time code; and
a tally display controller that controls tally display, wherein
the camera video signal does not include a tally signal, and
the tally display controller controls the tally display based on whether the REC RUN time code is being advanced.

### Claim 2 (depends on 1)

The video camera monitor according to claim 1, wherein the camera video signal is an SDI signal.

### Claim 3 (depends on 1)

The video camera monitor according to claim 1, further comprising:
a video display adjustor that adjusts a peaking level, a brightness level, and a contrast level;
a storage unit that stores an operational state adjusted by the video display adjustor; and
a video display setting switcher that switches an operation between the state stored in the storage unit and an initial state.

### Claim 4 (depends on 1)

The video camera monitor according to claim 1, wherein:
the camera video signal includes an embedded audio digital signal; and
the video camera monitor further comprising:
an audio signal separator that separates the embedded audio digital signal from the camera video signal;
a DA converter that converts the digital signal separated by the separator into an analog signal; and
an analog audio output unit that outputs the converted analog signal.