Kabushiki Kaisha Toshiba

Nippon Television Network Corp.

Kabushiki Kaishi Toshiba

Kawasaki Kaisha Toshiba

Yasuki, Seijiro

Yamada, Masahiro

Seijiro Yasuki

Kiyoyuki Kawai

Yoshihiko Ogawa

Kiyoshi Hoshino

Masahiro Yamada

Hiroyuki Chimoto

Noriya Sakamoto

Yoshihide Kimata

Shigeru Tashiro

Kenji Shimoda

Toru Sugiyama

Noboru Taga

Yoshio Sugimori

Yoshihisa Sakazaki

Tetsuya Kaise

Toru Miyazaki

Yasuhiro Fujiyoshi

Toru Hirata

Information service receiving apparatus having a managing information reader for reading managing information prestored in a removable storage medium while the storage medium is inserted, principal information capturor for capturing principal information which is provided by a predetermined information service provider, a specific information extractor for extracting specific information, which has a predetermined relationship with a key code contained in the managing information readout by the managing information reader, from the principal information captured by the principal information capturer and a data writer for writing the specific information extracted by the specific information extractor in the inserted storage medium.

Apparatuses for exchanging information over computer and broadcast networks

A TV receiver with selectable signal processing systems in which main controller selects a proper signal processing system according to signal processing unit based on the results of monitoring the type and the number of the input signals by input signal monitor and the monitor result for user's request by signal display monitor . Main controller downloads the instruction program from program memory , and then transfers the instruction program to signal processing unit . Accordingly, signal processing unit performs one unit of the three-dimensional Y/C separation, two units of the two-dimensional Y/C separations or three units of the one-dimensional Y/C separation on the NTSC video signal.

TV receiver with selectable signal processing systems

An intelligent digital television receiver for receiving a video signal, an audio signal and a digital data transmitted in a digital broadcast, and for executing an application based on the received digital data by itself or in connection with the received video and/or audio signal. The receiver has a controller for controlling executions of applications by generating events according to event start information bearing time information contained in a digital data stream as an object which comprises an element of the application and another controller for controlling executions of the application.

Intelligent digital television receiver

A multi-function TV receiver capable of performing the processing related to an object transmitted through the broadcasting and an object which is derived from accessible means other than the broadcasting and improving utility value for users and (broadcasting station) providers and achieving convenience. A first object data multiplexed in the vertical blanking interval is captured by communication means of a tuner,and a VBI decoder,A second object data which is used in a network including servers is captured by communication means of a CPU,and a modem,An linking operation associated the first and the second object data is executed by linking means using an I/O interface,a graphic controller,memories,and,a received optical data processor,a specification table,etc.

Multi-function TV receiver

An NTSC tuner, an ISDB tuner, a CATV tuner, and a CATV modulator are connected to an analog switch box. Demodulation sections, an A/D, clock-reproducing section, and a modulation section are connected between the analog switch box a bus. MPEG2 video decoder sections, an MPEG2 audio decoder sections, an NTSC/EDTV horizontal decoder section, an EDTV vertical decoder section, an MPEG2 video encoder section, and an MPEG2 audio encoder section are connected between the bus and a bus. An audio amplifier, a graphics controller, and A/D conversion sections are connected the bus. The switch box and the buses are connected to a bus controller, which is connected to a CPU, a memory, and a remote-control I/F. These modules are selectively used to receive and process digital broadcasting signals, digital CATV signals or NTSC broadcasting signals. Even while the CPU is performing bootstrap processing immediately after the power switch of the television receiver is turned on, a DMA device is initialized, causing a monitor to display an image being received, no matter whether an operating system has been activated or not.

Multimedia television receiver and method of booting the same

In a scanning line converting operation, an image signal is processed through a system including memories, switches, arithmetic circuits, an adder, a subtracter and a switch. In a graphic process, coordinate data processed by a parameter generator and a drawing unit is subjected to a coordinate converting calculation by the arithmetic circuits and supplied to an address generator. Based on an address generated by the address generator, a texture model, which has been stored in a memory under control of a CPU, is read out and supplied to a synthesizing circuit. In the synthesizing circuit, the texture model is attached to a polygon output from a drawing unit.

Image processing apparatus

The horizontal processing circuits subject the image data input respectively to the compression processing or the expansion processing in the horizontal direction and output said processed image data. The transfer means composed of the bus controller 338 and the bus 333 transfers respective image data from the horizontal processing circuits time-divisionally. The vertical processing circuit 334 subjects the respective transferred image data to the compression processing or the expansion processing in the vertical direction time-divisionally. The post-processing circuit 335 and the display device 464 display the image data from the vertical processing circuit 334.

Digital television set

On the transmission side, a delay unit, an adder, and a subtracter obtain an interframe sum output by calculating, in units of two frames, an interframe average sum of progressive scanning signals each having N scanning lines per frame, and an interframe difference output by calculating, in units of two frames, an interframe average difference related to moving image data. The interframe sum output is band-limited to a band which can be transmitted with a conventional scheme by switching, time expansion, vertical filtering, and first scanning line count conversion, and converted into M scanning lines per frame. The interframe difference output is band-limited to a band effective for resolution improvement of a moving image in a receiver of a conventional scheme by switching, time expansion, vertical filtering, horizontal filtering, and second scanning line count conversion, and converted into M scanning lines per frame. Outputs obtained by first and second scanning line count conversions are input to a sum arithmetic means to generate a first frame signal, and input to a difference arithmetic means to generate a second frame signal. The first and second frame signals are transmitted as an interlace scanning signal of M scanning lines per frame for a central portion thereof.

High-definition television signal processing system for transmitting and

A first image signal for a screen wider than that obtained by a TV signal of an existing television system is converted to a multiplexed signal that can be reproduced with a receiver of the existing television system, and input to a selector. The selector divides the input signal into a center portion signal and upper and lower black bar portions signals of the screen. The multiplexed signal has a center portion signal as an image display portion and upper and lower black bar portion signals as non-image portions. A difference signal (first LD signal) is multiplexed on the upper and lower black bar portion signals. A rearranging unit, a 5-time expander, a double speed converter, a delay unit, and a selector reproduce the first LD signal from the upper and lower black bar portion signals. A delay unit and a double speed converter double-speed convert the center portion signal. A line interpolator and a selector generate a progressive scanning signal. A 5.fwdarw.6 converter expands the progressive scanning signal in the vertical direction. The first LD signal is added to the interpolated scanning line of the first field by an adder. An LD generator generates a second LD signal from the compensated progressive scanning signal in the same manner as on the transmission side. A line interpolator and a selector also generate a progressive scanning signal. The second LD signal is added to the interpolated scanning line of the second field by an adder.

Multiplexed signal receiving apparatus

A wide aspect signal is band-width limited in the vertical spatial frequency by a V-LPF. The wide aspect signal is band-width limited along the temporal spatial frequency and in the vertical and horizontal spatial frequency by a 1/60-sec delay unit, an adder, 1 1/60-sec delay unit, a selector, a V-LPF, and an H-LPF. A motion image signal can be obtained by an adder. A still image signal can be obtained by the selector. The motion and still image signals are mixed by a mixer in accordance with an image motion amount. An output from the substractor is processed by a vertical shifter, an H-LPF, and a 6.fwdarw.5 converter to provide a still image compensation signal Vh. A signal from the V-LPF is compressed in the vertical direction by a 6.fwdarw.5 converter so as to be a center portion signal which can be displayed as an image with the receiver of the existing television system, and supplied to a selector. An output signal from the 6.fwdarw.5 converter is processed by an LD generator to generate a motion image compensation signal (LD signal). The LD and Vh signals are selectively output from a mixer in accordance with the image motion. A compensation signal output from the mixer is processed by an H-LPF, a 1/5-time compressor, and a rearranging unit, so that it can be multiplexed on upper and lower black bar portions formed on upper and lower portions of the center panel, and supplied to the selector.

Multiplexed signal transmitting and receiving apparatus

A television signal multiplexing and demultiplexing system includes a signal separation circuit for separating from a composite color television signal a plurality of first television signals serving as additional information for making the quality of a television picture higher and a second television signal. A matrix operation circuit performs a vertical matrix operation on the first television signals so as to dispose each of the first television signals in a different vertical band, thereby producing operation outputs. A delay circuit delays the operation outputs by different amounts of delay to produce delayed outputs. A multiplexing circuit multiplexes the delayed outputs on different horizontal scanning lines of the second television signal to produce a multiplexed output. A demultiplexing circuit demultiplexes the multiplexed output into the operation outputs and the second television signal. A recovering circuit recovers the first television signals by performing a matrix operation which is the inverse of the matrix operation on the separated operation outputs to recover the first television signal.

Television signal multiplexing and demultiplexing system

A compatible television signal encoder for encoding a television signal having a first signal and a second signal. The decoder includes a divider for dividing the wide aspect television signal into a main signal having the first signal and low-frequency components of the second signal multiplexed in the horizontal overscan regions of the first signal and an auxilary signal, an interpolator for producing an interpolating scanning field signal using a first scanning field signal of the main signal output from the divider, a field switch for replacing a second scanning field signal of the main signal with the interpolating scanning field signal output from the interpolator and an adder for adding the auxiliary signal from the divider to the signal output from the field switch.

Compatible television system with companding auxiliary signal

A television signal scanning line converting apparatus, where an intra-frame average signal and inter-frame average signal are obtained by processing a progressive scanning signal in a unit of two frames with a delaying circuit and adders. A lowpass filter limits the horizontal and vertical bands of an intra-frame difference signal to reduce the field amount. If the input progressive scanning signal is a moving picture, the low vertical range of the intra-frame difference signal will be multiplexed to the high vertical range part of the intra-frame average signal and the high vertical range of the intra-frame difference signal will be transmitted separately so that the resolution of the moving picture will improve and no deterioration, caused by the turning distortion, will be produced.

Television signal scanning line converting apparatus

A time base conversion circuit including a data interpolating circuit for converting a digital signal of sampling frequency fs into a digital signal having M (M is a positive integer) samples per N/fs (N is another positive integer) cycle without loosing data during the interpolating process, a register for holding M data which are output from the data interpolating circuit at the cycle of N/fs, M memories for storing M data which are held by the register at the cycle of N/fs, and controller for controlling data write/read operations of the memories at the cycle of M/fs and a selecter for selecting M data read from the memories by the controller successivly at the cycle of 1/fs.

Time base conversion circuit

A noise-reduction apparatus is disclosed which reduces noise contained in a digital video signal. A two-frame difference detecting unit receives the digital video signal and detects a two-frame difference signal. A high-frequency component extracting unit extracts a high-frequency component of the digital video signal or a high-frequency component of the two-frame difference signal. A first elimination signal generating unit generates a first elimination signal corresponding to the two-frame difference signal. A frame difference detecting unit received the digital video signal and detects a frame difference signal. A low-frequency component extracting unit extracts a low-frequency component of the digital video signal or a low-frequency component of the frame difference signal. A second elimination signal generating unit generates a second elimination signal corresponding to the frame difference signal. A noise elimination unit eliminates the noise from the digital video signal in accordance with the first and second elimination signals.

Growing community of inventors

Yokohama, Japan

Seijiro Yasuki