Sony Corporation

Yoshinori Komiya

Masayuki Suematsu

Takao Mogi

Keiji Yuzawa

Junya Saito

Kunio Hakamada

Masakazu Suzuki

Norihito Ichikawa

Takao Itabashi

Yukiko Okura

Fujio Tagami

Fujio Tanoue

A television receiver is adapted for displaying, in superimposition on a master picture of a channel received by a first tuner, a slave picture of a channel received by a second tuner. The television receiver includes a scanner key for scanning the channel received by the second tuner, a return key for terminating the scanning and a controlling circuit responsive to the operation of the scanner key and the return key for selecting the channel to be received by a receiving circuit. The scanner key is operated to scan the channels received by the second tuner and the return key is operated to terminate the channel scanning to select a desired channel to be received.

Channel-scanning picture-in-picture-in-picture television receiver

A video apparatus of the invention relates to some function, operation or the like in sets of plural character signals related to each other. When the function or the like is executed, each character within one set is output in sequence in a time series, such that the character can be expressed as if it were in movement in animation fashion on the display picture plane.

Apparatus for generating animated video insertions

In controlling an electronic apparatus, such as, a color television receiver, of the type having signal processing circuits which are individually adjustable in accordance with respective control signals provided by a microcomputer or central processing unit (CPU) in response to data corresponding to predetermined or standardized conditions of the adjustable circuits and which are stored in a non-volatile memory along with a secret code, operating keys selectively actuable to provide input data to the CPU for representing an externally applied code and, in a servicing mode of the receiver, for rewriting the data in the memory and thereby changing the standardized conditions of the adjustable circuits, and inner bus lines connecting the CPU to the adjustable circuits, the non-volatile memory and the operating keys; a standby power supply provides electric power to the CPU at a time when operating keys are actuated for inputting data representing an externally applied code to the CPU, a main power supply is turned on for supplying power to the adjustable circuits and thereby causing the receiver to display a color image, and the servicing mode of the receiver is established only when the externally applied code coincides with the stored secret code and the turning on of the main power supply is effected within a predetermined period after the externally applied code has been made to be coincident with the stored secret code.

Method and apparatus for establishing a servicing mode of an electronic

Digitally controllable ICs or function blocks in an electronic apparatus are connected through control bus lines, and a switch device is provided for disconnecting one of the digitally controllable ICs or function blocks from the control bus so that the control bus is not disabled when that one IC is turned off or is not occupied when the IC is operating in its internal processing mode. Therefore, communication between the remaining ICs can be maintained through the control bus.

Digital control bus system

Method and apparatus for use with a television receiver wherein a television signal is processed in a digital form and which includes a memory for storing data to control such processing, in which a circuit is provided for refreshing the data in the memory at successive vertical blanking periods and a circuit is also provided for writing input data into the memory at the appropriate location at any time new data is desired to be input by the user. An operating method is also provided to accomplish the functional tasks of the refreshing circuit and interrupt circuit.

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Kanagawa, Japan

Yoshinori Komiya