Sony Corporation

Koki Tsumori

Toshihide Hayashi

Katsuhiro Shimizu

Ban Kawamura

Masayuki Tsumura

Yasuo Inoue

Kiyoshi Ogawa

Ryuichi Okumura

Takanobu Hizuka

An AV system composed of an HD recorder and a display unit uses a communication interface of the HDMI. An HDMI source of the HD recorder transmits image data (image signal) in the form of differential signals to an HDMI sink of the display unit through three TMDS channels. The HDMI source inserts content identification information for the identification of the type of a content of image data to be transmitted into an AVI InfoFrame packet placed in a blanking period. A control section of the display unit controls operation of a display processing section which carries out a process for displaying for the image data based on the content identification information received by the HDMI sink and a display section for displaying an image.

Communication system, transmission apparatus, transmission method, reception apparatus and reception method

[Object] To make it possible for the reception side to carry out an optimum process for an image signal (image data) depending upon the type of a content. [Solving Means] An AV systemcomposed of an HD recorderand a display unituses a communication interface of the HDMI. An HDMI sourceof the HD recordertransmits image data (image signal) in the form of differential signals to an HDMI sinkof the display unitthrough three TMDS channels. The HDMI sourceinserts content identification information for the identification of the type of a content of image data to be transmitted into an AVI InfoFrame packet placed in a blanking period. A control sectionof the display unitcontrols operation of a display processing sectionwhich carries out a process for displaying for the image data based on the content identification information (ITC, CTand CT) received by the HDMI sinkand a display sectionfor displaying an image.

There is provided a display device equipped with a display unit, the display device including a receiving part for receiving a difference signal of a plurality of channels including an image signal and content identification information inserted in a blanking period and outputting the image signal and the content identification information; a light emission amount regulation part for setting a reference duty according to image information of the image signal; an adjustment part for adjusting so that an actual duty is within a predetermined range based on the reference duty and an adjustment signal and adjusting a gain of the image signal so that a light emission amount defined by the actual duty and the gain of the image signal becomes the same as the light emission amount defined by the reference duty; and an adjustment signal generation part for generating the adjustment signal based on the content identification information.

Display device, image signal processing method, and program

A display microcomputer displays a menu corresponding to several functions, such as picture-in-picture display and satellite broadcast reception on a mini-viewing screen that is part of the cathode-ray tube picture screen of a television receiver. A remote controller permits selection of different video and audio signal sources and, if the user selects sources that are incompatible or inconsistent, a system controller returns the menu to the condition prior to the incorrect selection. The system controller also controls a display microcomputer in such a way that items on the menu that are inhibited from selection are displayed in halftone. That is, if any inhibited item appears in the menu by a modification of the mode of operation, the display microcomputer is controlled so that the menu is returned to the condition prior to the selection and the inhibited item is displayed in halftone. For example, erroneous operation that would change the reproduced sound of a duplex sound channel while the user is watching a picture reproduced from a video tape recorder is prevented, because the set value for the duplex sound can not be varied by the user.

Apparatus for displaying inhibited menu functions in a television

An electronic apparatus is adapted for realizing desired functions by combining a number of functional devices, in which the trouble states of the functional devices may be identified speedily and positively by virtue of its self-diagnostic function. Control data are periodically transmitted from a system controller 41 connected over an I.sup.2 bus for operating the functional devices, such as a video processing circuit 33 or an audio processing circuit 37. The functional devices are checked for malfunctions at each control cycle of transmitting the control data from the system controller to the functional devices for collectively displaying the checked results of malfunctions of the functional devices during the self-diagnostic mode operation.

Self-service diagnostic unit for plural functional devices

In response to data supplied from a system controller, a display microcomputer of a television receiver produces a display in a sub-screen of the cathode-ray tube of a main menu corresponding to the numerous operating functions of which the television receiver is capable. Some of these functions include a picture-in-picture function, a satellite broadcast receiving function, and a picture-recording reservation function. When a user of the television receiver selects an item on the main menu corresponding to the picture-in-picture function by using a remote controller, the system controller controls an audio video switch, the picture-in-picture circuit, and a display microcomputer to provide two picture-in-picture sub-screens displayed simultaneously. One sub-screen contains a sub-screen menu to enable the user to set parameters relative to the picture displayed in the other sub-screen.

Picture-in-picture television receiver with menu displayed in second

A television receiver capable of displaying the condition, i.e., ON or OFF, of the power supply which supplies electric power to an external BS (broadcasting satellite) reception converter, together with the reception level at the BS antenna. The level at the antenna is detected by a level detector circuit (27) according to the output from a BS tuner (23) and displayed on the CRT (36). A power supply circuit (20) which supplies electric power to the external BS converter is switched on by a power switch (46). A system controller (41) detects the condition of this power switch and displays this condition together with the antenna reception level.

Television receiver with UHF/VHF and broadcast satellite tuners, power

A television receiver has a system controller and a memory that supplies data to a display microcomputer for displaying a menu of features, such as picture-in-picture, a broadcast satellite receive mode, a reservation of recording mode. The displaying microcomputer displays the menu on a sub-screen portion of a cathode-ray tube. A user selects a feature using a remote controller and the system controller displays cursor that moves under user control, and displays non-selected items in half-tone brightness or a different color.

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Tokyo, Japan

Koki Tsumori