Abstract: This invention provides a spread spectrum signal demodulator in which a noise component included in respective demodulation symbols is reduced and an effect of interference removal is further improved. Symbol decorrelating means detect correlations between spread codes allocated to spread spectrum signals to be removed and a receiving signal. A symbol deciding means 121 synthesizes one or the plurality of one symbol correlation values b1 to bk in common phase, namely, diversity-synthesizes them so as to decide a symbol. As the symbol decision, hard decision or soft decision can be used. Correlation modification means input the one symbol correlation values b1 to bk output from the symbol decorrelating means and the symbol decided result output from the symbol deciding means 121 thereinto, and modify the symbol correlation values b1 to bk. The modified symbol correlation values d1 to dk are transmitted into interference replicating means so as to be spectrum-spread by corresponding spread codes.

Abstract: An image processing apparatus capable of displaying guidance and of setting the operating environment for an application program when the capability of a computer system is different from the operating environment expected by the application program. The image processing apparatus comprises: a CD-ROM drive 8 for loading an application program; a main processing unit 2 for forming graphic signals by executing the application program; and a display 3 for displaying the graphic signals. The main processing unit comprises: a determining unit 211 for determining whether or not the main processing unit 2 has provided the operating environment expected by the application program; a display control unit 212 for displaying guidance on the display 3 based on the results of the determination of the determining unit 211; and a setting unit 213 for allowing the operating environment of the application program to be set by the main processing unit 2.

Abstract: An apparatus for combining signals includes RAKE receivers 10, 20, noise-power measuring apparatuses 30, 40, and a branch combiner 50. The RAKE receivers 10, 20 are the same in number as the antenna branches, and each RAKE receiver combines received signals by using a weight based on an amplitude of each received signal. Each of the noise-power measuring apparatus 30, 40 measures a sum of an interference power and a background-noise power in an output signal from each RAKE receiver. The branch combiner 50 multiplies the output signal from each RAKE receiver by an inverse of the sum measured by the noise-power measuring apparatus, and then adds up the value obtained by each multiplication.

Abstract: A spread spectrum signal demodulator receives a received signal including a plurality of spread spectrum signals, and comprises at least one signal strength suppressing means, which reduces a correlation signal outputted from a first correlation detecting means or replica signals until the correlation signal has been traveled through a replica signal generating means, a replica signal subtracting means and a second correlation detecting means. According to the invention, it is possible to improve interference cancellation capacity with a computational effort substantially comparable to that in a prior art replica signal cancellation system and improve interference cancellation performance with increasing number of interference cancellers irrespective of the magnitude of the correlation. With a sufficient number of interference cancellers provided, it is possible to obtain the same effect as obtainable with prior art decorrelation in a real time processing irrespective of the correlation magnitude.

Abstract: A resin composition which comprises 50-97% by weight of thermoplastic resin with a melting or softening point of about 330.degree. C. or below and 3-50% by weight of cured phenolic resin, in the form of powder, with an average particle diameter of about 500 .mu.m or below. This resin composition is moldable into a sliding member having excellent mechanical properties in an aqueous environment and provides economical merit.

Abstract: An interworking apparatus for roaming among a plurality of mobile network having different inter-network signaling protocols is connected to the plurality of mobile networks and has a database record for holding network identity information for identifying a mobile network to which at least one mobile user (mobile station and another mobile terminal such as IC device) to be traced is visited.

Abstract: The radio communication system has at least one first radio station such as a base station and a plurality of second radio stations such as mobile stations. The base station at least possesses a public key, and each of the mobile stations possesses a public-key cryptography function for using the public key and an identity itself. An identity confidentiality method includes steps of generating a time-varying public key at the base station based upon a predetermined time initial, and repeatedly broadcasting, from the base station, the generated time-varying public key to all the mobile stations. The mobile stations cipher their respective identities with the broadcasted time-varying public key so that the encrypted/identities of the mobile stations, which are sent to the base station, remain confidential. After enciphering their identity, the mobile stations wait to be called.

Abstract: An authentication system whereby authentication load can be distributed in the network without sharing secret information of users is provided.The system has a single master authentication center arranged in the network, the master authentication center sharing with the user a user secret key, and a plurality of slave authentication centers sharing with the master authentication center respective secret keys different from the user secret key. The master authentication center authenticates the user by using the user secret key and issues a certificate information which certifies legitimation of the user, to the user if the user is authenticated as a legitimate user. The slave authentication center authenticates the certificate information from the user and issues a permission information which allows an access to a specified server or an application server in the network, to the user if the user is authenticated as a legitimate user.

Abstract: A conductive paste capable of effectively preventing current interruption in through-holes of a fluorescent display device. An anode substrate having Al film wirings formed thereon is laminatedly provided thereon with an insulating layer, which is then formed thereon with an anode conductor and phosphor layers in turn, leading to an anode. The insulating layer is formed with through-holes, in which the conductive paste is filled to make electrical connection between the wirings and the anode conductors. The conductive paste is formed of a mixture of Ag, glass and a vehicle, and Zn and/or Sb added to the mixture, wherein Zn and/or Sb are added to the mixture in an amount of 1 to 40 wt. % based on Ag. Zn and/or Sb serve as a catalyst for promoting alloying between Ag contained therein and Al, resulting in providing electrical connection therebetween with highly increased stability.

Abstract: In the preliminary authentication stage, the mobile station (35) is authenticated by sending from the home network (30) to the roamed network (31), a plurality of pairs of first random numbers (RNDa.sub.1, . . . , RNDa.sub.n) and calculation results (SRESa.sub.1, . . . , SRESa.sub.n) of the cipher function (f), which calculation is performed at the home network using the secret key (ki) and the first random numbers (RNDa.sub.1, . . . , RND.sub.an), by sending, from the roamed network to the mobile station, third random numbers formed by coupling second random numbers (RNDb.sub.1, . . . , RNDb.sub.m) produced at the roamed network with the first random numbers (RNDa.sub.1, . . . , RNDan), by sending, from the mobile station to the roamed network, calculation results (SRESa.sub.1, . . . , SRESa.sub.n, SRESb.sub.1, . . . , SRESb.sub.

Abstract: A demodulator receiving as input signal a sum of a plurality of spread spectrum signals is disclosed. The demodulator comprises means for obtaining a correlation between a spreading code assigned to each of spread spectrum signals contained in the input signal and the input signal for each spread spectrum signal symbol and making the correlation thus obtained to be a 0-th detected correlation, a 1-st interference canceller stage for receiving as inputs the input signal and the 0-th detected correlation and outputting 1-st residual error signal, 1-st detected correlation and sum of the 0-th and 1-st detected correlations, and a plurality of interference canceller stages operable similarly to the 1-st interference canceller stage by receiving as input the output signal of the preceding interference canceller stage.

Abstract: A video camera apparatus including a video camera device, a battery for supplying electric energy to the video camera device, an adapter detachably mounted in the video camera device to connect the video camera device with the battery, and a connecting device. The video camera device may be attached to the base unit and thereby be connected with another electrical apparatus, such as a VCR.

Abstract: A video tape recorder (VTR) adapted for use in editing tapes so that a second signal may be recorded on the tape to accurately and closely follow a first signal recorded thereon is provided with a record review mode where a portion of the first recorded signal immediately preceding the changeover, or edit, point may be reviewed prior to recording the second signal. The VTR is of the type which, upon being placed in a pause mode, automatically rewinds the tape by a length corresponding to a first predetermined number of control signals. In the VTR according to the present invention, upon entering the review mode, the tape is automatically rewound for a second length and then played back for a third length corresponding to but slightly less than the sum of the first and second lengths. Thereafter, the VTR automatically reenters the pause mode to be rewound again by the first predetermined length.