Pioneer Electronic Corporation

Pioneer Video Corporation

Pioneer Electric Corporation

Satoru Nomura

Junichi Yoshio

Sumio Hosaka

Shoichi Katagiri

Youichirou Tsuda

Yoshihisa Nagai

Hisao Matsuoka

Tetsuro Emi

Makoto Hijikata

Naoto Itoh

Junichi Kurata

Ryoji Higashi

Koji Miyashita

Hiroyuki Higuchi

A digital audio signal recording and reproducing system employs a recording method which can function for a reproducing apparatus of a low price satisfying the performance of the conventional standard and also an expensive reproducing apparatus of a high sound quality which satisfy the standard of the Super CD featuring a wide band, a high sound quality, and multi channels. The recording apparatus divides recording audio signals into a plurality of frequency components and produces data for recording, respectively. Further, the recording apparatus adds identification data indicative of a frequency band of each of the data and records the resultant data. The reproducing apparatus selectively extracts each of the above data by means of the identification data and performs the reproduction of the extracted data.

Apparatus for recording and reproducing a frequency bandwidth coded

A method of recording and reproducing picture information, a recording medium on which the picture information is recorded, and an apparatus for playing such a recording medium are disclosed. A video format signal and a coded information signal are recorded in a first area of the recording medium. Graphic codes including picture information occupying at least one channel in a channel group of N (N being a natural number equal to or greater than 2) channels are inserted as a subcode in the coded information signal. Identification code information of at least one channel is recorded in a second area of the recording medium. When the recording medium is played, the identification code information is displayed and a picture signal corresponding to the graphic code occupying a channel designated by a picture channel command for designating one channel in the channel group is mixed with the video format signal.

Method of recording and reproducing picture information, recording

Method and apparatus of recording and reproducing picture information on a recording medium. In addition to a coded information signal, subcodes together with identification codes for identifying the coding system of the subcodes are recorded in a first recording area of a recording medium and the identification codes and content discrimination codes for indicating contents of information included in the subcode using the coding system indicated by the identification code are recorded in a second recording area of the recording medium. It is further characterized that the identification code and the content discrimination information recorded in the second recording area are displayed at the time of the playback of the recording medium.

Method and apparatus for recording and reproducing picture information

An information recording medium playing apparatus detects a preset memory command of every data unit of a graphics information signal of a subcode of a CD format signal which playing an information recording medium. During play operation, address data corresponding to the respective preset memory commands are constantly stored in a memory. In a search mode, the head of desired graphics information is searched on the basis of the address data stored in the memory.

Apparatus for reproducing information from a recording medium in

An apparatus for playing a recording medium on which, in addition to a coded information signal, graphic codes including picture information are recorded as being inserted as subcodes into the coded information signal, includes a pickup for reading information recorded on the recording medium and a graphic code detection device generating a graphic code detection signal when the presence of graphic codes in the read signal of the pickup is detected. The apparatus further includes a device for inhibiting a special reproduction operation of the apparatus by which information recorded on the recording medium in an order different from a recording order by a track jump operation of an information reading point of the pickup, when the graphic code detection signal is present.

Apparatus for playing recording medium having a selective special

Method of recording and reproducing picture information and a recording medium on which the picture information is recorded by the method, and an apparatus for playing such a recording medium. In addition to video format signal and a coded information signal, graphic codes including picture information and instruction codes representing a mixing ratio on each position of a two-dimensional picture formed by the video format signal are recorded on the recording medium after being inserted as a subcode of the coded information signal. At the time of reproduction, signals according to the graphic codes are mixed at each position of the video format signal in accordance with the instruction codes. Preferably, in graphic codes are preferably codes representing the color of each position of the two-dimensional picture, and the instruction codes are codes respectively representing mixing ratios previously determined in accordance with colors represented by the graphics codes.

An apparatus for playing a recording medium on which, in addition to a video format signal and a coded information signal, graphic codes including picture information are recorded as the subcode of the coded information signal. The apparatus is structured to generate, as a reading address data, data which varies sequentially by a predetermined value from a value determined in response to a command, and to write sequentially the graphic codes output from an extracting circuit into a memory and subsequently sequentially read out the graphic codes in the order of address indicated by the reading address data. With this feature, the position of the subcode image can be moved on the picture by the video format signal. According to another feature of the invention, the apparatus is structured such that a reading timing signal which has a time relationship determined by a command with respect to a sync signal contained in the video format signal demodulated by a demodulating circuit, and the graphic codes output from the extracting circuit are written into the memory and subsequently sequentially read out in a predetermined order by using the reading timing signal.

Recording medium playing apparatus which permits changes in the display

Method and apparatus of recording and reproducing picture information on a recording medium. In addition to video format signal and a coded information signal, graphic codes including picture information are recorded on the recording medium, by inserting the graphic codes as a subcode of the coded information signal. At the time of reproduction, a signal according to the graphic codes is mixed with the video format signal. When the recording medium is played back, a portion of the video format signal corresponding to a predetermined period of the video format signal read-out from the recording medium is written in a memory, and the signal according to the graphic code is mixed with a still picture video format signal which is produced by repeatedly reading the stored content of the memory.

Method and apparatus of recording and reproducing picture information on a recording medium. In addition to a coded information signal, subcodes together with an identification code for identifying the coding system of the subcodes are recorded in a first recording area of a recording medium. The subcodes are preferably graphic codes including picture information and character codes having predetermined bit patterns, and are decoded in accordance with the identification code at the time of the playback of the recording medium.

Method and apparatus of recording and reproducing picture information

Method of recording and reproducing picture information and a recording medium on which the picture information is recorded by the method, and an apparatus for playing such a recording medium. In addition to video format signal and a coded information signal, graphic codes including picture information are recorded on the recording medium correspondingly to playback sections of the video format signal, the graphic codes being inserted as the subcode of the coded information signal. At the time of playback of the recording medium, a video signal according to the graphic codes corresponding to the playback section of the video format signal is generated each time one playback section of the video format signal is played back. Preferably, presence or absence of the graphic codes is displayed each time one playback section of the video format signal is played back.

Playback method for use in an apparatus for playing a recording medium having a lead-in area, a first area in which only a coded information signal is recorded, and a second area in which a video format signal and a coded information signal are recorded by using a multiplexing operation. The method is characterized by the operations of reading information recorded in the lead-in area in response to a command, moving an information reading point of the pickup to the first area of the recording medium when subcode picture presence information, which indicates that a graphic code including picture information is inserted in a subcode of the coded information signal, is detected from information recovered from the lead-in area, and reproducing information of the first area preferentially to other areas of the recording medium.

Playback method for use in a recording medium playing apparatus using

A video disk recording method and the recorded disk in which a video signal is frequency-multiplexed with a digital data signal into respective frames which are asynchronous to each other. A time code is recorded in both types of frames. The time is incremented periodically but the period in one of the types of frames is occasionally varied to compensate for the asynchronism.

Process of recording time codes onto a video disk including periodic

A video disc recording/reproducing system is improved by preventing secondary or higher order sidebands of the FM modulated video signal from affecting an audio signal multiplexed with the video signal.

Growing community of inventors

Yamanashi, Japan

Satoru Nomura